Concrete Floor Grinding & Polishing pages: 12-25 - Pdworld.com

CONFIDENCEMake a lasting impact withCaterpillar hydraulic hammersOur broad range of hydraulic hammersgives you the confidence to get the job donerapidly and effectively. All are speciallydesigned for quieter operation, deliverblows of consistent force, and incorporatea fully-protected power cell. They also havesealed accumulators and do not requireconstant recharging, which increasesuptime and helps ensure they deliver highperformance, time after time after time.But that’s not all. When used in combinationwith Cat machines, you have the perfectperformance match. Uninterruptedproductivity. Equipment to be proud of.A single point of contact. And the backupof our unrivalled spare parts service andvast dealer network.Work with confidence;use hydraulic hammers from Caterpillar.www.cat-worktools.com©2009 Caterpillar Inc. All rights reserved. CAT, CATERPILLAR, their respective logos, “Caterpillar Yellow” and the POWER EDGE trade dress,as well as corporate and product identity used herein, are trademarks of Caterpillar and may not be used without permissionHEAX4299

Words from O’BrienTrainingAround theWorldRecently CSDA held its Operator Certificationand Estimating classes in Florida.Over 1,500 students have graduatedfrom nine different classroom and handsoncourses since they began in 1992.What is different with these classes isthe students. The majority of studentshave come from North America, butmore and more students from aroundthe globe are now attending. This sessionattracted two students from India,two from Trinidad and Tobago and onefrom Canada.CSDA training programmes haveevolved over time and have been supplementedin recent years by online training.Online training is becoming increasinglypopular, and will certainly meet the needsof many students, but the hands-onand classroom courses will always bea preferred method of training. Trainingmembers from foreign countries is a plusfor CSDA, since not every country is ofsufficient size to be able to organize anassociation and provide training. Withover 20 percent of its membership basedoutside the United States, CSDA is anatural to provide such training.Members who come from outsideNorth America come to the United Statesto develop ongoing relationships, in additionto learning from CSDA instructors.The international sawing and drillingcommunity is small in comparisonwith the construction industry, andit is natural for a close-knit group ofpeople with a passion for what they doto rely on each other to learn, grow andadvance the level of professionalism intheir industry.special surveyCSDA is also trying to expand itsreach by holding training sessions outsideof Florida to better serve members,both domestic and international. NextFebruary, CSDA will conduct its firsttraining session at the World of Concretein Las Vegas. The Wall Sawing 101 classwill be held 2-4 February, 2010, withclassroom sessions and hands-on trainingheld at the outdoor booths of severalmanufacturer members.Wall Sawing 101 is geared towardsboth newly-hired operators and thosewanting to expand their knowledge ofwall, hand, ring or chain sawing basics.The course covers a basic introductionof types of saws; blade and diamondchain selection; how diamonds work;setup, operation, troubleshooting andpreventive maintenance.CSDA is also holding discussionswith international members, with theaim of developing customized trainingprogrammes in the United States forlarger groups of foreign operators. It ishoped that training classes offered tointernational members can be held atthe same time and location as classesfor North American members to promoteinternational cooperation and the sharingof information. Training has always beenimportant for the advancement of anyindustry. The maturity of the internationalsawing and drilling community is mostencouraging, and preparing to meetthe training needs of an ever-growingnumber of operators is a challenge thatCSDA is ready to accept.Best regardsPatrick O’BrienExecutive Director CSDA,US Concrete Sawing& Drilling AssociationFirst international dealermeeting for MantovannibenneFrom 9 to 13 September 2009, the Italianmanufacturer Mantovanibenne held its firstworldwide dealer meeting. The dealers spenttime in the factory and discussed with MBI staffthe difficult year for the sector and strategiesand possible solutions for 2010.The dealers visited a job site in Bondenoto look at three Mantovanibenne attachmentsa Scrap Shear SH700 eagle version, a FixPulverizer MCP900 and a Rotating PulverizerRP18, working on a sugar refinery.The Scrap Shear SH is the most productivetool for all metal processing requirementsfor demolition as its high cutting forces makelight work of steel sections.The Pulverizer MCP is the ideal tool torecycle and pulverise concrete blocks intosmall fragments for easy loading and transportationoff site.The Rotating Pulverizer RP is used forprimary and secondary demolition and idealfor recycling and its 360° hydraulic rotationallows perfect positioning even in high reachdemolition applications.The dealer representatives also visitedsome historical places in the province ofModena and the meeting was so successfulMantovanibenne is making plans for thenext one.www.mantovanibenne.comIona sets sights onglobal recycling marketIn Northern Ireland a new company Iona WasteSystems Ltd has been formed specialising in thedesign and manufacture of a diverse range ofproducts, aimed at the waste recycling sector.Iona Lights Separation Unit is one of theproducts in the range, which when married withother IONA equipment will enable customers topotentially recycle up to 95% of their construction,demolition or industrial waste material. Theprocessed materials can then be used as highgrade recycled products, such as aggregates,steel and refuge derived fuel.The Iona range of Trommels are claimedto be unique in that they have been specificallydesigned for the recycling market. Iona also suppliesthe range of associated auxiliary systemsto maximise throughput and end product and allplants can be tailored to suit customer requirementsand budgets. As well as targeting UK andIrish Markets, Iona aims to pursue the huge exportmarket potential where legislation dictates theimportance of recycling waste to reduce landfilltaxes. Iona, based in Killyman, County Tyrone, hasalready had interest from potential dealers in USA,France, Germany and Australia.www.ionawaste.com8 PDi • Is s u e 4 - 2009 • Oc t - No v

www.trevibenne.itA strong characterthat can satisfy allofyour needs.TREVI BENNE spa -36025 Noventa Vicentina -VI-Italy -Via A. Volta, 5T 0444 760773 -F0444 861182 -info@trevibenne.it

Recycling & Waste ManagementSaudi Arabia 20091-4 November this year the largest specializedtrade event organized in Saudi Arabia for therecycling and waste management sector tookplace. The Recycling & Waste ManagementSaudi Arabia 2009 took place at the brand newRiyadh International Exhibition Centre under theAuspices of Ministry of Municipal and Rural Affairs,Kingdom of Saudi Arabia. The event, the secondin the series started in 2007, is tailored to addressthe critical problems of accumulated wastefacing almost all regions across the Kingdomas a result of the rapid industrialization, massiveboom in the construction sector, and substantialsurge in population estimated at 3% annually.Several billion USD have been allocated by thegovernment to tackle the increasingly challengingissue of waste management and disposal,industrial emissions, and pollution control. Theprivate sector has also matched the government’sinitiatives by injecting massive investmentsinto recycling plants and projects aimed atminimizing the effect of accumulated waste onthe environment. Visitors to the show includedcontractors, industrialists, project developers,hospital managers, farm managers, municipalityrepresentatives, environmental experts, as well asprofessionals, importers and distributors.www.recexpo.comNew dust extractor from ScanmaskinScanmaskin, manufacturer of concrete andstone floor grinding and polishing machines, isnow launching their own range of industrial dustextracting vacuums. The range is extended withthe new model ScanDust 6000.ScanDust 6000 is a low height model easy toload in to a van or car. It has a large capacity andstrong suction with an easy filter cleaning function.ScanDust 6000 is developed to fit the larger floorgrinding models from Scanmaskin, ScanCombiflex650 and ScanCombiflex 700RCScanDust 6000 is not only suitable in floorgrinding applications but is optimal in all sorts ofdust extraction. It is equipped with Hepa 13 filter.Scanmaskin now has a series of dust extractorsand ScanDust 6000 is the biggest of them witha 5,5 kW suction motor. The other models areScanDust 3000 and the one-phase modelsScanDust 2800 and ScanDust 1300.www.scanmaskin.seAquajet Open day provesinternational successThe latest Aquajet Systems open day held at thecompany’s production facility in Holsbybrunn,Sweden, proved highly successful attractingvisitors from more than 12 countries. Guestswere able to study and test Aquajet’s completeproduct programme during the two day event.“Setting a record, the high number ofguests, confirmed that international interestin hydrodemolition techniques is steadilygrowing, not only in Europe but globally,” saidAquajet Systems managing director StefanHilmersson.“We are associated as being a leadingcompany in developing technical solutions forhydrodemolition and are committed to present-ing new products and techniques that provide increasedefficiency and quality to our customers,”said Aquajet Systems sales manager, Jan-ÅkePetersson. “This year was no exception and thelatest version of the Aqua Cutter HVD Evolutionattracted considerable attention.”Aquajet Systems robot programme hasbeen extended with the new concept robot,MaxHybrid. Powered by an electric engine, italso features an onboard diesel engine as analterative, according to the application. The newrobot has an extended reach of 10 m, plus allthe features of other Aquajet robots to providethe operator with significant flexibility.www.aquajet.se10 PDi • Is s u e 4 - 2009 • Oc t - No v

What do these countries have in common?Scan Combiflex grinders

Floor Prep &Few industry segmentshave experiencedsuch a dramaticgrowth as concretefloor preparationduring the last twodecades. The floorpreparation industry ismuch more then justpreparing concretefloors as many othermaterials are usedfor flooring. This sectoris very interestingbecause demolition,renovation, as wellas concrete cuttingcontractors very oftenhave the need forfloor preparation onjob sites. So manyof these contractorshave started to offerconcrete floor grindingand polishing servicesas well.A floor grinder from General Equipment.12 PDi • Is s u e 4 - 2009 • Oc t - No vSome years ago the founder and majority owner of HTCSweden AB, Håkan Thysell, was asked how many square metresof concrete floor he thought there were in the world. He guesstimatedat around 30 billion square metres worth about EUR 97billion (US$145 billions). Other key people have been asked thesame question and of course is very difficult to answer. However,all agree there is a huge amount of concrete flooring in the worldand has been increasing rapidly as most of the buildings that areconstructed now have concrete floors.“Such potential”The concrete is often just the foundation and is covered withdifferent types of coatings, such as epoxy resins, tiles and othertypes of flooring material. But as epoxy and similar are the mostcommon type of floor covering it also needs to be replacedoccasionally. It is estimated that about 60-75% of all concretefloors in the world are covered. Tim Van Der Veen at HusqvarnaConstruction Equipment say that an additional 25-35% of concretefloors is not either covered or polished (e.g. raw concretefloors that have no sealer, paint, epoxy e.t.c). The remaining,less then 5%, according to Tim, are assumed polished whichmeans a great potential. Polished concrete floors have cometo stay and can probably expect an faster growth over thenext five years. Polished concrete flooring is even growingin popularity in private households as well as in industrialenvironments. This option has not yet taken off in Europebut is becoming very popular in USA. It is not only the visualappearance that is attractive, but also concrete flooring is alsofar more environmentally friendly and more cost effectivethan epoxy floors.“Quite a journey”Initially floor renovation and preparation was made withsingle head grinders, often rather difficult to work withand also very time consuming on large projects. HåkanThysell with his company HTC Sweden is believed tobe the first in the early 1990s to develop a new andmore efficient method for preparing concrete floors. InHTC’s footsteps followed the companies Diamatic, nowcalled Blastrac, and King Concepts, which is now partof Husqvarna. These three companies, together withmaybe a few other manufacturers and with HTC asleader, started to push the concept during the 1990s.First the focus was on machines and tools for floorpreparation, like efficient removal of epoxy, glue andother types of covering in order to prepare a perfectconcrete surface for new coatings. Next step wasto convince the market that actually the concretefoundation was good enough to be used as a finalfloor product, after several steps of polishing. Evenhere HTC Sweden was first to launch a model withseveral polishing steps, which finally provided a highglazed concrete surface easy to maintain, was environmentallyfriendly and comfortable to walk on.They called the method Superfloor that is now verywell accepted today. Currently most of the world’smanufacturers of concrete floor grinding equipment,as well as manufactures of different types ofshot blasting, milling and cleaning equipment, alsooffer their own systems for high glazed concretesurfaces, including colouring and staining.The release of new and more efficient concretefloor grinding equipment started during the

Polishing 09Is s u e 4 - 2009 • Oc t - No v • PDi 13

The mostrecentfloor grindersfromHusqvarna, PG280 and PG 400.HTC 2500iX, yet the world’s biggestfloor grinder with three planetarysystems, cabin, integrated dust extractionsystem and a grinding widthof 2.5 m.14 PDi • Is s u e 4 - 2009 • Oc t - No vsecond half of the 1990s. The techniques have since been radicallyimproved with more efficient grinding machines offeringgreater stability, easier maintenance, remotely controlled steering,more options and better handling of dust and slurry. The removalcapacity, as well as the evenness, has been improved with multiplegrinding heads and planetary systems in combination with moreefficient diamond tools. The single grinders, which were initiallythe only option, are still used but the three or four head grindersnow dominate, as they offer a more even final finish and are easierto operate. The size of the machines has also increased from the20 to 45 mm diameter grinders to between 650 to 1000 mmfor one planetary system and from 1 to 2.5m for two or moreplanetary systems working together.The really large scale grinding and polishing jobsare increasing, which will lead to the development oflarger grinders in the near future, as there is a marketfor mega size grinders.Massive interestContractors that offer concrete floor preparationand polishing continuously need informationand training about the advantages of theseservices. Also if designers and architects canbe convinced about the advantages of usingpolished concrete as a final flooring product theconcept will further increase in popularity.The polishing concept had its first major break through afew years ago, even though HTC launched it during the 1990s,and is still growing in popularity. At the latest World of Concreteshow in Las Vegas around 55 companies demonstrated concretefloor grinding and polishing concepts, including diamond toolsfor concrete floor grinding. At the coming WOC show in 2010at least 40 exhibitors are expected in this sector.World of Concrete is perhaps the best example ofa show where these machines and methods have foundthe right platform and audience. But several otherexhibitions have also seen the potential in thisproduct segment. The Atlanta basedshow International Concrete Polishing andStaining Conference, is a good example ofthe strong interest for this sector in the US.The show, which took place 1 - 4 Octoberthis year, gathered a big number of suppliers.Building and construction equipment showsall over the world has started to target thissector. The DEMCON show in Stockholmnext year is another example that will have astrong focus on concrete floor preparation andpolishing and will also contain a large demonstrationarea. It will also be interesting to see theapproach for this segment at Bauma 2010. Theworld’s branch associations for concrete sawingand drilling, demolition and industrial clearancehave also included concrete floor grinding on theiragendas. In many countries it is now considereda new service from these contracting groups andtraining is also organised from the associations.CSDA in the US is a good example of that.When a product segment develops at such aspeed, as concrete grinding and polishing, thereis a big risk of overheating. This is also somethingthat not only affects manufacturers but also contractorsthat invest large amounts in equipment,tools and training. It is difficult for contractors to choose froma wide variety of brands and quality and pricing. The market isalso experiencing a big number of low budget machines beingintroduced where just the colour and the logos vary, butare all made in the same Asian factory. This is the samefor tools. For quite some time the market has been experiencinga tremendous price war on tools and there arenumerous copies and patent infringements.Reaching a hundredThe concrete floor preparation and polishing industry has seen aremarkable growth during the last two decades. From just a handfulof international players 20 years ago there are now an estimated60 to 70 manufacturers and could reach 100 in another five years.The following is a list of some of the manufactures:HTC Sweden AB, Husqvarna Construction Products,Blastrac Diamatic, Substratetechnology/STI/PrepMaster, Superabrasive,Inc., Schwamborn GmbH, SPE, Hamatic, Connex,Barracuda/Pengineer, Scanmaskin AB, Terrco Inc, SASE CompanyInc, Klindex, EDCO Inc, VIC International, Innovatech, RawanEnterprises, ONFLOOR, Oztec Industries Inc, National SurfacePreparation Equipment, GranQuartz, BlastPro Manufacturing,Inc., Substrate Technology Inc., Kut-Rite ManufacturingCo., General Equipment Co, PROSOCO Inc, Pearl AbrasivesCompany, Concut Diamond Products, Citadel Floor FinishingSystems/RockSolid Floors, Universal Polishing Systems, CDCLarue, Aztec Products Inc., Diamond Concrete Tools, DiamondSpeed Products, Inc., Diamond Technology, SMITH Manufacturing,US Shotblast Parts & Service Corp, Wagman Metal ProductsInc, Zered Inc. Jack Midhage AB, Tyrolit, Diamond Products,Hilti, Huachang Diamond Tools Manufacturer Co. Ltd., ShingoGrinding Wheel, Reliable Diamond Tool, Inc., Lackmond ProductsInc and Detroit Industrial Tool.Eight companies responded to the survey of the market andthese are Marketing Co-ordinator Jonas Landt from HTC SwedenAB, Global Vice President Stephen Klugherz from BlastracDiamatic, Product Manager Tim Van Der Veen from HusqvarnaConstruction Products, Sales Manager Len Sniegowski fromSuperabrasive, Inc, Marketing and Sales Director Gebhard Grassfrom Schwamborn GmbH, Marketing Manager Paulo Bergstrandfrom Scanmaskin AB, President Jim Vinella from Terrco, Inc andPresident Wei He from Pengineer A/S.The size of the market?The first question in the survey was an estimation of the concretefloor preparation market. Jonas Landt at HTC said thatBelow theHiperfloorfinal result.Husqvarna ConstructionProductsHiperfloorpreparation.

The Lavina seriesfrom Superabrasive polishingconcrete in a warehouse.The BGS 250 from Blastrac Diamatic.Jonas Landt, HTC Sweden AB.the potential is unlimited. He added that almost everybuilding in the world has at least one concrete floor thatneeds preparation and has a potential to be convertedto HTC Superfloor, but did not have specific figures.He said that the challenge was to create awareness of thepossibility to refine concrete floors to HTC Superfloor andsee the great benefits of it instead of covering the floors withvarious coatings.Tim Van Der at Husqvarna Construction Productssaid that it is very hard to even make a guess but he thinksit is huge.Len Sniegowski from Superabrasive declined to give specificnumbers. “Because we are a global company that reachesall over the world, I would have to say that the U.S. and Asiaand Europe are the top markets at this pointfor concrete floor preparation and polishedconcrete but Australia, New Zealand and SouthAmerica are coming up quickly to catch them,”says Len Sniegowski.“The intangible things in the market makeit very difficult to speculate with any degree of accuracywhat the global market value of concretefloor preparation and polishing is or will be. AllI can say is that, even in a recession, we have seengrowth all over the world through new distributorsand existing distributors getting creative intheir approaches to existing and potential contractors.More new customers around the worldare preparing concrete and polishing concretewith the Lavina Surface Preparation Systemthan last year. Those customers will continueto find new projects and to offer their services aswell as the older companies in the market whohave been polishing for 10 years now. Because aproperty increases in value when a Lavina SPS floor is installed thatwill only drive the consumer to want more polished concretein their homes and work places.”Gebhard Grass at Schwamborn believesthat the market value is about EUR 200 to 300Million when it comes to concrete floors thathave the potential to be converted in to a finalflooring solution.“Divided in to certain regions I believe thatEurope stands for some 25%, North America thesame, Middle East, Asia, Australia and New Zealandabout 35% and Africa and South America whatremain of the concrete floors that can be polished,”says Grass.Steve Klughertz from Blatrac Diamatic believesthat the early estimates on polishing published severalyears ago were a little premature in growth and size.“While we believe the size of this market will grow aboveany other sector, we also believe there are some inheritrisks associated with polishing as it relates to stayinglong term at the forefront,” says Steve Klughertz, whodescribes those risks as follows:“1. Contractor competence and quality of workmanship. Thisvaries too much for some owners and architects, so we are focused onraising this quality and workmanship through specification enforcementand working with the owners well before the contractors areinvolved to set proper expectations. This mostly relates to the largeMats Tikkanen, HTC Sweden AB.chain of retail owners who have 100 or more locations but it istheir wish to work on the premise of ‘single source responsibility’ tocontrol cost and end product. In other decorative or lower volumesegments we are focused on colour programs and overlays wheresquare foot costs are less likely to be under pressure.“2. The other problem possibly facing this market is continuedfragmentation of the diamonds and chemicals. While theseitems represent a fairly low percentage of the price per foot theyseem to be the items that get the most attention from contractorsas cost savings, rather than quality equipment or labour competence.Material handling is also a major concern so for all three ofthese items Diamatic globally is working on smarter equipment,diamonds, and more user friendly chemical compositions with theleaders. We will introduce an extended line of grinders, materialhandling vacuums, and leading edge diamondtechnology all in 2010.“3. Diamatic USA will announce a newpartnership in 2010 at WOC that will significantlyenhance the chemical side of polishing,addressing owners’ and contractors’ demandto create a longer lasting, user friendly materialthat can be rejuvenated. This new product willintroduce polishing to several new market segmentsnot currently focused on.“4. As a part of long term polishing acceptance,maintenance must be addressed. Tothis note a new maintenance certification programmeand partnership will be announced in2010 as well as new line maintenance products,pads, and machines. These products have beenlaunched in the USA in this last quarter and willhave a full commercial launch in 2010 at WOCin Las Vegas. To date, we believe there has been500M-700M feet ‘professionally’ polished inthe USA that could use a level of maintenance. We expect thisnumber to be in the millions in the future.“5. We also estimate that approximately 100M is beingmaintained at some level but this is an educated guess based onchemical sales and interviews with maintenance companies aswell as some chains. This number should grow asapplications in broader markets accept polishing asthe viable flooring solution.”The potential for polishedconcrete floors in refurbishment andnew projects?Steve Klughertz eluded to this earlier and added:“While not all markets are equal we believethe systems approach with a very deepproduct offering is what contractors arelooking for. Owners on the other handaccept the fact polished concrete is avery real solution and flooring option,but given the relatively young market(10-12years) there is still some maturityto take place and probably some consolidation. If we wantthis market to grow and be applied on all the available concretesurfaces, quality, consistency, and contractor competence all needto grow. All jobs cannot be subject to the cheapest diamond orwatered down chemicals to save a few pennies per foot.”Husqvarna’s Tim Van Der Veen thinks there is still significantgrowth potential of this product. “Technological advances are beingfuelled by the rapid rise in demand, providing opportunities foreven further improvements in the economics and environmentalbenefits of this kind of flooring alternative. We believe there is stillsignificant growth to come for this product,” he says.In terms of polished concrete floors in new products Timadds: “I would say at this point it is still quite small since so manyof the decision makers are still to learn about the properties andfull benefits offered by polished concrete systems. Factors suchas low life cycle costing, improved energy efficiency and reducedenvironmental impact are still to be fully understood by manywho make the final decision on choosing the finished floor inThe remote controlled Scan Combiflex700 RC from Scanmaskin.16 PDi • Is s u e 4 - 2009 • Oc t - No v

commercial and industrial applications.”around 5-8% market share and will gainLen from US Superabrasive has so far seenaround 5% per year.the largest growth in private homes and smallerDr He Wei from Pengineer A/S is also verycommercial projects.optimistic saying: “Thanks to recently available“With the down market in 2009 it cloudswater-based colour stains and fine concreteour perspective a bit. My opinion is that over thechemicals available, polished concrete will showlast 10 years it has gained 0.5% of the market perits strong growing potential in the followingyear over all. The large box stores like Walmart,two years, although epoxy and functional topare not included in that figure. Those markets arecoatings are still the dominant floors installedpretty saturated,” says Len. “My opinion is that itby our clients today. But I believe the polishedis still in less than 5% of all new building projectsconcrete can gain 10 to 15% market shareas a specification and less than 10% of the rehabper year from top coating. Europe, Northprojects in our markets at this point. That canAmerica, Australia and New Zealand will beonly increase as education and safety knowledgethe main regions where there exists a highis shared with more and more consumers. If a Tim Van Der Veen, Husqvarna potential of converting existing concrete floorconcrete slab is involved, it will be in 20% of Construction Products.into polished floor.”new builds by 2020 and 15% of rehab projectsHe Wei believes that currently less thanby 2015. Polished concrete has an infinite amount5% of new building projects consider polishedof colour choices and design possibilities that makeconcrete floor, slightly higher percentage for industrialit a much more economic solution than ceramic tile,floors. However, he sees a quick increasecarpet and hardwood. Also, because epoxy flooringof commercial floor of small areas being treatedhas such a short life expectancy, it will soon replace itwith polished concrete.as the number one surface choice in garages and workshops simply because polished concrete will typicallyWhat type of floors dominates today?last as long as the building is standing.Jonas Landt at HTC says that resins, natural stone/“But concrete polishing will only be consideredterrazzo, wood, vinyl and concrete will dominate.in new projects if the architect knows about it beforePolished concrete has been in use for quite sometimehand and it is specified. Most often the company orin Scandinavia.person who ultimately occupies the facility, after itTim Van Der Veen says that it depends on theGebhard Grass, SchwambornGmbH.is built, will decide on the flooring options. Again,market sector. “In residential dwellings tile, stone,education and information needs to be made availabletimber and soft floor coverings, such as wool-blendabout this amazing flooring option. To me there is no other option carpets, dominate. In commercial sectors it is a bit the same withwhen concrete is the subsurface.”tile, stone, vinyl, Terrazzo and resin floors and in the industrialGebhard Grass from Schwamborn thinks that in his main sector only resin floors.market areas the polished concrete product segments stands for Len at Superabrasives says that it is epoxy for garages andLen Sniegowski, Superabrasive, Inc.He Wei, founder and owner of PengineerAS which develops and manufacturersthe well-know Barracuda toolsas well as the new line of Barracudafloor grinders.The Dust-Fighter, part of the Gladiator Range from Towerlight issynonymous with innovation, quality and environmentally friendlyproducts for both construction and industrial applications.The Dust-Fighter is a Particle Dampening System that creates aforceful yet fine mist that attracts dust which is harmful to both operatorand machinery, and drives it into the ground. Covers a distance of 20-60m.Gladiator by Towerlight SrlVia Stazione, 3 Bis 27030 Villanova d'Ardenghi (PV) - ItalyTel. +39.0382.400.246 Fax +39.0382.400.247 email: info@towerlight.itwww.towerlight.it www.gladiatorline.itIs s u e 4 - 2009 • Oc t - No v • PDi 17

The new and popular floorgrinder HTC 1500 ixT was recognizedand awarded the Design Trophiessilver medal during the trade showBATIMAT 2009 in France. During theaward ceremony in Paris, Novemberthe president of HTC France, ThomasForss, was presented with a statuetteand a diploma.The Blastrac 580 triple head grinderused for high glazed polishing. Belowthe 580 again during the first polishingsteps.shops, hardwood and ceramic tile in homes. Similarly GebhardGrass at Schwamborn agrees and adds screeds, resin floors, terrazzo,natural stones and concrete.Current and potential clients?The current users of floor preparation equipment have beencontractors working with refurbishing, concrete sawingand drilling, light demolition, clearance and cleaning.But this sector of clients is quite narrow for those whodevelop systems for floor grinding and polishing. “Wetarget all possible sectors related to the professionalbuilding and construction industry, including flooringcontractors, cleaning industry, rental business andfloor owners,” says Mats Tikkanen, MarketingCommunication, HTC Sweden AB.Tim Van Der Veen at Husqvarna ismore specific. “Our floor grinding productsbasically fall into the following three categoriesof use: Rectification, making good sub standardconcrete substrates, such as rain-damaged orpoorly installed concrete. Second categoryis demolition and refurbishment, removingsurface overlays, such as screeds, adhesivesand coatings, and restoring the concreteback to a clean and flat condition in preparation for a newsurface treatment or covering. Third category is floor finishing,honing and polishing applications, such as Hiperfloor, Terrazzoand natural stone.“Since these applications fall into so many market segments,users normally fall into the following groups, which are concreteinstallation and finishing contractors, concrete floor preparationcontractors, building and construction companies, flooringinstallers, concrete repair specialists, waterproofing contractors,industrial flooring contractors, professional grinding and polishingcontractors, terrazzo supply companies,architects and interior designers, maintenanceengineers and facility managers,government and civic project managersand residential home owners”.Tim finds the biggest potential inthe Floor finishing segment. Especiallythe Hiperfloor polished concrete marketwhere Husqvarna continues to seesignificant growth and market development.They especially see this in thecommercial flooring sector, for example, floors in retail stores andcommercial buildings. In some countries, particularly Australianand the USA, Husqvarna is also seeing extensive use of Hiperfloorin residential dwellings.“Although the rectification, demolition and refurbishmentsectors are very large market segments for us, they are also quitemature and we do not see explosive growth in them,” says Tim.Len at Superabrasive values the distributors very much andsees them as a very important source for spreading informationabout their products as well as selling and training. “We arecurrently working with distributors and helping to train andeducate end users world-wide. Architects, designers, builders andsub-contractors as light demolition, refurbishment and concretesawing and drilling contractors are the main scope of our distributors,”says Len Sniegowski.He adds that the rental markethasseen the largest growth for them. “Wecontinue to seek out the strongest rentalstores in the US and bring them into our family ofdealers and distributors. They offer a service centreand a retail point for our end users that makes itmuch more convenient that shipping our productsall over the world. Also, new contractors are poppingup everyday for concrete surface preparation andpolishing. We are going after the newest companies ashard as we can.”Gebhard Grass concurs with Len. Gebhard whothinks the distributors are highly rated and valuableincluding the rental companies. Schwambornhas also an extensive direct sales operation as wellas OEM manufacturing. Gebhard finds the highestpotential in distributors including the rental sector aswell as OEM sales.Positive and negative aspects?Two floor grinders from When the whole world is stressing the fact that newSchwamborn, above DSM 530 methods for floor prep and concrete polishing is somethingS and below the DSM 250. really revolutionary it is easy to ignore the negative aspects.Even with seemingly strong growth during recent years itis uncertain to continue so what are the positiveand negative aspects?Jonas Landt at HTC is certain that the current useof concrete floor grinding equipment and equipment forconcrete polishing will increase. The positive aspects arethe impact on the environment, more durable floors in bothindustrial and public premises and less maintenance. The negativeaspects are smaller non-serious actors on the market, bothregarding hardware manufacturers and contractors.Tim Van Der Veen agrees with Jonas Landt: “There areenvironmental benefits in terms of polishing. We can say thatcompared to refurbishment of conventional floors, the amountof waste or disposal associated with polished concrete is basicallyzero, if considered by volume. There are also economic benefitsconnected to polishing of concrete, which means low life cyclecosts compared to conventional floors, reduced energy consumptiondue to reflective properties of polished concrete. There arealso economic benefits in terms of floor preparation. Grindingproduces superior surface finishes and floor flatness compared toother floor preparation machines. This reduces the overall floorinstallation cost as it reduces, and in some cases eliminates, theneed for levelling screeds. Grinding also reduces the amount ofresin and paint required to deliver a quality resin or panted floor,”says Van Der Veen.“The negative side of it, as with all new and expanding markets,is that it can become quite fragmented with many differentinterested parties desiring a ‘piece of the pie’. This can, and has,created mixed messages at all levels of the supply and demand18 PDi • Is s u e 4 - 2009 • Oc t - No v

An example how polished and stained concrete floor can looklike with the Superabrasive methond.chain, as well as significant variations in quality of delivery. Tocombat this, much work is required to educate interested partiesso we can be sure the customer receives what they want, and thecontractor can deliver the standard the customer wants in an economicallyviable way. The development of agreed upon industrystandards is a must, in conjunction with comprehensive trainingand certification programmes for contractors to ensure there istrue competency in the market place,” adds Tim.Astonishing high glaze with the Superabrasive polishedconcrete floor method.Len at Superabrasive also believes this business will see acontinuous increase for the foreseeable future. “There is so muchunpolished concrete in the world that one can only imagine thepossibilities of growth. Concrete is everywhere. The positiveaspect as well as a negative effect is that the market is still new tomost consumers. It is our job to help our distributors grow thecontractor base in our markets. And we are doing just that,” saysLen. “I would like to stress the importance of proper education tothe consumer and the contractors who are considering polishedconcrete as an option. We offer a two-day seminar at our worldheadquarters in Hoschton, Georgia, USA that we like to call the‘Navy Seal’ training course for polished concrete. It covers the floorpreparation side of things as well as the decorative options availablefor polished concrete. We show a contractor how to sell a polishedconcrete floor to a consumer who is considering epoxy or tile as anoption. The diamond tooling is one of the most underestimatedfacets in the concrete polishing industry as not all diamonds aremade the same. We educate on that as well and that makes for avery well rounded concrete polishing contractor after they leaveour facility.”Gebhard Grass thinks justlike his colleagues that this sectorwill increase. “The trend of floor preparationand polishing will undoubtedly increase. Asmy colleagues say there are several advantageslike cost savings, good image, environmentalfriendly compared to epoxy or resin coatings,easy to clean and maintain. The negative sideof it is that the maintenance costswill be higher to keep a high glosson polished concrete floors. Polishedconcrete also is not adaptable on all types ofLarge scale warehouse grinding and polishing with anumber of Lavina grinders from Superabrasive.concrete surfaces,” says Grass.He Wei at Pengineer A/S says, “There exists a brightfuture for polished concrete, due to its unique beautyand functionality. We at Pengineer AS will continuouslycontribute to this industry to further improve the qualityof polished concrete. I can see some thingsthat need to be improved concerningthe more technical aspects. This is, forexample, to properly fill up the micropores to ensure inert concrete surface to beeasy maintenance and last longer. Even shinebetween aggregates and cement, method andtools of efficiently expose and polish concrete,improved energy saving, environment-friendlygreen products for the future.”HTC SwedenSeveral companies have contributed towardsthis floor grinding survey and include somedetails of each starting with perhaps the leadingmanufacturer HTC. The company was foundedin 1987 by Håkan and Gunn Thysell and isnow owned by the company 3i. Turn over in2008 reached just over EUR28.3M (US$ 42.3M) and has 160employees. Head office is in Söderköping, Sweden with four fullyowned subsidiaries and distributors in 60 countries. HTC exportsglobally with the biggest markets being the USA and Europe.HTC’s business concept is to develop, manufacture andsell professional floor solutions that take economy, ergonomicsand ecology into account. HTC has machines that covereverything from edge grinding to grinding of very large areas.HTC’s floor solutions include everything from floor preparationto maintaining and cleaning floors. HTC has not only the widestmachine range but also the widest range of diamond tools forfloor grinding.The latest floor concept is called HTC Superprep, whichis a method for surface levelling and floor preparation. Theconcept HTC Superfloor, polishedconcrete, launched in the mid 1990’s hasbecome a brand known worldwide.Husqvarna ConstructionProductsHusqvarna Construction Products, partof Husqvarna AB, is the worldleader in diamond tools andequipment for the constructionand stone industries. HCP,which also includes the concretefloor grinding and polishing division,accounts for 25% of Husqvarna AB’s salesof professional products. The whole HusqvarnaConstruction Products has 2,100employees. Husqvarna ConstructionThe final result with Lavina.Tim Van Der Veen at Husqvarna hassubmitted some photos that give a goodidea what polished concrete is about.First picture shows the first two stepstowards a high glazed surface.The Husqvarna PG 680 and the dustextractor DC 5500 in operation.Above: Almost done and below thefinished Hiperfloor.The Husqvarna PG 680 and the dustextractor Husqvarna DC 5500.Is s u e 4 - 2009 • Oc t - No v • PDi 19

The HTC 650 HDC in operation.Blastrac Diamatic 780 triple headgrinder polishing concrete.Schwamborn edge grinder DSM 250.Below HTC Superfloor preparation.20 PDi • Is s u e 4 - 2009 • Oc t - No vProducts has 10 main factories and the products are sold inapprox 70 countries through its own sales companies ordistributors.Main markets are Europe, North America, and Australia.The extensive product range for the constructionindustry includes power cutters, diamond tools, drillingequipment, floor saws, tile and masonry saws, wall andwire saws as well as machines for surface preparation anddemolition. The complete line of floor grinders includesPG 820, PG 680, PG 530, the most recent machines arePG 280 SF and PG 400 SF and the dust collectorsDC 5500 and DC 3300.Superabrasive IncSuperabrasive, Inc. with headquarters in Hoschton,Georgia, USA was founded by GeorgePopov and George Georgiev in 1986 and thecompany is still fully owned by the founders.Turnover is not available but the company has250 employees. Superabrasive has two productionplants in Krun, Bulgaria plus the world headquartersin Hoschton. Sales are through a network of more then 75distributors worldwide. The main productsegments are concrete grinding, polishing andmaintenance products and training, concrete floorpreparation products and training, diamond toolingmanufacturer and concrete grinding and polishingmachine manufacturer. Superabrasive is well known forits Lavina 500 series SPS Machines ranging from:Lavina 507 and 507E: 7” single head edge and cornermachine 2.0 HP 110V and 220V modelsLavina 516 and 516E: 16” 3 head planetary floor machine2.0 HP 110Vand 3.0 HP 220V modelsLavina 520 and 520E3: 20” 3 head planetary floor machine4.0 HP 220V single phase and7.5 HP 220V three phase modelsLavina 525 and 525E3: 25” 3 head planetary floor machine 7.5HP 220V single or three phase and10 HP 220V three phase modelsLavina 525N and 525NHV: 25” 3 head planetary floor machine15 HP 220Vthree phase and 15 HP 480V threephase modelsLavina 532 and 532HV: 2” 6 head planetary floor machine20 HP 220V three phase and 20 HP480V three phase modelsThe new Barracuda X6from Pengineer AS.Some recently released diamond tooling products are:V-Harr floor polishing pads in grits 50, 100, 200, 400, 600, 800, 1800, 3500 and8500 (BUFF)Nato Economy diamond resin pads in grits 50, 100, 200, 400, 600, 800, 1500, 3000and 8500 (BUFF)Chemicals:Lavina SPS Premium Densifier - Lithium based concrete densifierthat dries in minutes and is ready for the next step of diamondtooling in 20 minutes. Lavina SPS Floor Glow - Lithium basedconcrete sealer that penetrates the polished concrete and gives atopical barrier against foreign liquids. Must be burnished with8500 Buff pads.Concrete Dyes:Superabrasive, Inc. carries the Ameripolishdye product line for all of its distributors. Bringing22 vibrant colours into the Lavina SPS familyof products New developments are about to belaunched including a remotely control unit forthe Lavina 525NRC and the Lavina 532 models.The Lavina 532RC will be the world’s largest remotelycontrolled floor grinding and polishingmachine.Blastrac and DiamaticFor Blastrac with the Diamatic brand Diamaticrevenues are growing rapidly, since the brand hasonly been re-introduced formally into the USAthis year. Growth percentages are misleadingly largebut the growth will continue through the economicrecovery and beyond. Diamatic is a specialty brandof Blastrac Global, whose revenues are approximatelyUS$ 60M annually. Blastrac/Diamatic distributors are in88 countries from the Middle East to Australia to LatinAmerica with corporate offices in San Diego, Oklahoma, Canada,The Netherlands, France, Germany, UK, Spain, Dubai, Shanghai,Beijing, Singapore, and a new location in India for 2010.Schwamborn GmbHSchwamborn GmbH has more than 45 years manufacturingmachines for the floor renovation, scarifying and grinding andoffers around 30 different models. Schwamborn was founded inWangen, Germany by Alois Schwamborn in 1935The company is still owned by the Schwambornfamily. Turnover data is not available but the companyhas 40 employees. Head office and production is locatedin the same premises in Germany. The company’smain markets are continental Europe and southeastEurope, Russia and North America.The product range contains single discmultipurpose machines ES 420S- STR 580-581-701-702S-703, Scarifiers BEF 203-201-250-301 and cold milling machines OMF250, Grinder: DSM 250-430SL-530SL-500S-530S-650S-800SThe company is launching the new DSM 250, edger andgrinder. In September a new PCD-Diamond range was launched.In January Schwamborn will introduce their new heavy-duty 7.5kW floor grinder DSM 530S and during the first quarter anotherheavy-duty grinder on 4 kW named DSM 530SL.The new Scan Combiflex500 PD with Power Drive.Scanmaskin ABScanmaskin was founded by Claes-Göran Bergstrand in 1975. Thecompany is today owned by him and his son Paulo Bergstarnd.The current turn over is around EUR 8.5M (US$12,8M). Headoffice and factory are located in Lindome, Sweden and the numberof employees is 20. Scanmaskin has four fully owned subsidiariesin the Nordic countries and Estonia. Sales are through direct salescompany outlets 10 distributors. The main market is currentlyScandinavia.The product range contains eight models of floor grinders andfour dust extraction models. Scanmaskin also manufactures its ownseries of tools like the Snap-On removing tools SC-Tiger Twin,Gold and Silver and SC-Scratch with claw. The Snap-On grindingtool range consists of SC-Silver, Black, Brown, Blue, Green, Red,White and Yellow. Scanmaskin system for polished floors is calledGlazed Floors and here the tool series Snap-On RDC for concretepolishing, contain qualities from #100 - #3000 and the Scan-Padseries for soft polishing of concrete also in qualities #30 - #3000.Scanmaskin also have their Snap-On Speedline series for polishingnatural stone and terrazzo with qualities from #50 - #10.000Scanmaskin has recently launched their new low builtindustrial vacuum named ScanDust 6000 together with theScanCombiflex 45NS 1-phase grinder for concrete and naturalstone grinding.Pengineer and BarracudaDr. He Wei, who developed the original Barracuda grinding tool,

founded Pengineer ASin 2004. Pengineer AShas been developing itsown floor Grinders alsocalled Barracuda. Therange contains threemodels, Barracuda X4,X5 and X6, which isthe most recent. During2010 another threeThe Barracuda range.models X2 (edger), X8and X9 will be launched.He Wei says that he was very satisfied with the outcome of therecent International Concrete Polishing and Staining Conferencein Atlanta where his products attracted a large audience.Terrco IncUS manufacturer Terrco is a well-known player in the US marketand is based in Watertown, South Dakota with 11 employees. Thecompany was founded in 1926 by Peter F. Vinella and is a familybusiness. In 1953 the company was handed to Frank P. Vinella and in1989 to James and Peter Vinella. The next generation in the Vinellafamily is in place to take over when the time comes. The products aresold directly and through a network of nine distributors. The NorthAmerican market is the strongest but sales are down worldwide.Product Range (all direct drive except LP machine)Model 200: 5HP, electric, two head (six stones) with 20”wide X 10” cutting pathModel 701-S: 7.5HP, electric, two head (six stones) with 28”wide X 14” cutting pathModel 7500: 10HP, electric – four head (12 stones) with 20”wide X 20” cutting pathModel 2000:15HP, electric – four head (12 stones)with 24” wide X 24” cutting pathModel 3100-3P: 25HP, electric, four head (12 stones)with 28” wide X 28” cutting pathModel 3100LP: 38HP, LP, four head (12 stones)with 28” wide X 28” cutting pathModel 6200:40HP, electric, eight head (24 stones)with 54” wide X 28” cutting path, self-propelledDiamond Tooling16, 20, 30, 40, 80, 150 grit metal bond Bevelled Edge Discin 10 different bondsSpecific Blue Bond for Thin Mil Epoxy & Mastic removalSharks Teeth PCD’s for Thick Mil removalSpecific Shavers for cracking open hard troweled concrete floorImproved Metal/ResinPatented Speed Shift System for Quick Change of ToolsTERRCO ®The name in Heavy Duty Surface Preparation and GrindingModel 6200Model 3100-3PModel 3100 LPModel 2000“The Proof’s in the polish”Since 1986 Superabrasive, Inc. has been manufacturing, engineeringand testing diamond tooling. From creating the only diamond tipped drillbit to drill through super-hard polymers, to creating and patenting dozensof diamond tooling pads for many major manufacturers of concretepolishing machines, Superabrasive has been done a good job.First floor grinder in 2001In 2001, Superabrasive, Inc. set out to create its own concrete polishingmachine and named it Lavina (the Bulgarian word for avalanche).Burdened by other manufactures not giving them the exact parametersof their machines, the Superabrasive engineers had to guess at themathematics involved in engineering the proper diamond tooling padsfor each machine. By controlling the diamond tooling and machinemanufacturing, Superabrasive was able to put together an advancedconcrete grinding and polishing system. According to themselves themost advanced on the market today. The machines look simple andvery easy to use. They are quiet and registering extremely low on adecibel meter.“The secret is in how the machines are engineered and manufactured,”says President of Superabrasive, Inc, George Georgiev. They nowmanufacture many different size and horsepower machines to satisfyany concrete polishing crew’s needs. Georgiev says, “The difference ina Lavina SPS floor and our competitors’ one can be seen in many ways.First of all, we used to manufacture the diamond powder ourselves. Wedid the entire process starting from graphite and by applying the rightamount of heat and pressure we created the diamonds that were usedin many tools. This expertise proved invaluable later, when Superabrasivewas able to control the quality of each diamond used in manufacturing.“Because we can check the quality of each used diamond, we ensurethe best performing diamond tools on the planet.”US National Rental Sales Manager Len Sniegowski says, “The proofis in the polish. That has become our slogan around here.” ConcreteProducts Manager Mark Elliott adds, “I’ve been here at Superabrasive,Inc. for over 9 years and there hasn’t been anything close to a LavinaSPS floor that I have seen since we incorporated our step-by-stepsystem. For years, we didn’t believe in using chemicals, such as densifiersor sealers, on the concrete. But now, we have found partners in theindustry that make the chemicals just the way we like them in order forour customers to receive the optimum concrete polish every time. It’spretty exciting to watch a customers’ face when he puts our patentedV-Harr polishing pads on his Lavina machine and the shine absolutelyignites. It’s impressive, to say the least.”SPEED SHIFTTOOLING SYSTEMSpeed Shift PlateShark’s Teethfor thick milremoval.20-40-80-150Metal Bevel Edge DiscTrowel Busterfor roughinghard troweledfloor.Direct Drive System • Heavy Duty • Time TestedLow Maintenance • Quiet Change Tooling“74 Years in Business”Visit us at World of Concrete February 2-5, 2010 in Las Vegas Booth 031541.TERRCO ® , INC.Watertown, SD 57201 • (605) 882-3888 • Fax (605) 882-0778E-mail: info@terrco.com • Website: www.terrco.comEpoxy cutterfor thin mil &mastic removal.The pictures above are showing some surface preparation equipment from Terrco including the final product.“Take your time grinding”According to Len Sniegowski at Superabrasive there are some mistakesoften made when grinding and polishing a concrete floor. “One of thebiggest mistakes that people make when polishing concrete is goingway too fast during the grinding process. You must first grind the flooropen in order to process it properly. You can always tell when a guy hasrushed through the grinding process. The floor looks blotchy, streakyor it is full of large swirly scratches on the surface. This can only beavoided by slowing way down during your first diamond tooling step.If you start with 30 grit metal bond tools, then that will be your sloweststep in the entire process. Don’t rush it. If the whole job takes 10 hours,spend 5 hours grinding. The polishing steps go so much faster andbetter when you take your time with the grind. We grind at a slowerRPM, so it only makes sense to move much slower. When we get tofoam heads and resin pads, we can move a bit faster because we stepthe RPM up to 800. The diamonds are hitting the floor much fasterso you don’t have to sit in one spot for so long. Also, when you get tothe resins, you are not removing a lot of concrete so it doesn’t pay togo super slow. Go slow on the grind so you can make up some timeon the polishing steps.Another big mistake is using cheap Densifier or not using it at all.The problem here is that people are trying to polish the hardest surfacepossible and if one skip this step he run the risk of wasting the resinIs s u e 4 - 2009 • Oc t - No v • PDi 21

tools on a soft concrete surface. They will literally disappear before theoperators eyes in about 100 square feet. A good resin pad should lastroughly 10,000 sq ft. Also, a cheap Densifier will be mostly water andthe chemical reaction with the cement that surrounds the fine aggregatein the concrete will be minimal and that would undermine the wholeprocess of densifying the concrete in the first place. So never skimpon Densifier,” says Len Sniegowski.Superabrasive, Inc. encourages anyone to come to their Headquartersin Atlanta, US and see for themselves how easy a Lavina SPS flooris achieved. They provide monthly two-day seminars for anyone whowants to learn the craft of concrete polishing. Len Sniegowski says, “Wehave made Superabrasive, Inc. a one-stop-shop for our distributors, toeliminate a lot of the guess work involved with ordering products andreceiving training. We actually listen to our customers’ feedback, so youcan bet we are improving on perfection all of the time.”There have been many advances in diamond tooling and concretegrinding and polishing machines that Superabrasive, Inc. has createdover the years. The invention of the replaceable, tapered small terrazzoplug and the NATO resin pad, just to name a few, have had thecompetition scrambling to follow suite and copy or come close tocopying their technology. Not to be out done is the V-Harr polishingpad. “They make a world of difference in the polish after 800 Resin,”Dennis Von Ruden, the President of General Equipment Company,based in Minnesota, USA, shares some interesting thoughts basedon his his long time experience working in the US surface preparationequipment.With increased emphasis being placed on the repair and restorationof our infrastructure, a growing number of contractors are faced with thechallenges associated with removing a wide variety of coatings fromsurfaces. Contractors must now deal with the task of not only removingthe coating, but preparing the surface for a new coating application. Inthese situations, contractors must make three important decisions:1. The type of coating that needs to be removed.2. How to economically remove and dispose of the coating materials.3. How to properly prepare the old surface for a new coating application.“Everything is not epoxy”Most facility owners do not know what type of coating material is on theirfloors, when it was applied or who performed the work. Most owners lookat every material as an epoxy, so much so that the word has becomea generic term for most types of floor coatings. Thereare literally thousands of epoxies being produced bya similar number of manufacturers. Urethane-coatingtechnology has seen explosive growth in recent yearsand now, likewise, thousands are available for almostany application. Much like epoxies, wide variances inurethanes exist in curing time, curing thickness andadhesion requirements.Material disposal is also becoming an importantconsideration. Gone are the days when an old coatingcould simply be loaded up and dumped at the locallandfill. Now, issues pertaining to environmental risks,hazardous material permits and specialized disposalcosts are important considerations during the bidding process, becausemany of the older materials contained asbestos or other materials nowclassified as hazardous. The classifications bring new meaning to compliancewith air quality standards and even safety equipment considerationsfor workers during the coatings removal process.The next problem is identifying and selecting a process that willmost effectively remove the surface coating. For removal of surfacecoatings, there are now many processes available that can be utilizedto meet most expectations.22 PDi • Is s u e 4 - 2009 • Oc t - No vsays Mark Elliott. “Nothing polishes concrete, marble, granite andterrazzos like V-Harr pads do. Nothing.” With that kind of confidencebehind their products you can see why Superabrasive is enjoying somuch success in a very tough economy. Concrete polishing is actuallyon the rise but the economy has slowed the amount of polishingthat is being done by each contractor. It has not stopped thoughnew companies from forming and starting their own businesses asconcrete polishing companies. “They are popping up everywhere wedo a demonstration for one of our distributors. It’s fun to watch themget excited and go off on their own as business owners. Again, theproof is in the polish,” says Mark.www.superabrasive.comBeyond the SurfaceBecause surface-coating removal can involve many unknownvariables, it is impossible for one specific machine or process toaddress every problem. In fact, it is not uncommon for a number ofdifferent surface preparation machines to be used on the same job.The nature of surface preparation is very subjective. Many times, theanswers to surface preparation problems are not black and white, butdifferent shades of grey.Surface GrindersSurface grinding equipment has been in use for more than 40 years,with dual-head, counter-rotating units being the most popular. Theoriginal concept of surface grinding equipment was torepair damage caused by improper concrete placingtechniques or environmentally related factors. But assurface grinder use has become more popular, anumber of manufacturers have developed a greatervariety of attachments to increase their functions.For the last 30 years, the mostpopular attachment for surfacegrinders has been silicon carbideimpregnated grinding stones. Withstones ranging from six grit for roughgrinding to 180 grit for smoothgrinding, these have always been popular for grindingconcrete surfaces. However, the porosity of grindingstones allows them to clog very quickly, making themhighly unsuitable for most coatings-removal projects.Over the years, other attachments or processes weredeveloped specifically for surface coating removal. Ofthese, only two types of attachments have earned anexcellent track record.Surface Grinding: Diamond SystemsAbout 20 years ago, diamond-grinding systems were first developedas attachments for use with surface grinding equipment. It was soonrealized that the anti-clogging characteristics of diamonds made thisattachment ideal for quick and efficient surface coatings removal. Lategeneration diamond grinding systems are still an effective solution formany specialized coatings removal projects.While diamond hardness has been consistent, a wide variety ofmatrix materials and hardness values are used to control the finish wearrates. For example, a more abrasive coating may require the use of aharder matrix material to control segment wear rates.A diamond grinding system is favoured for removing many thinfilm coatings or those coatings with hardness values that preclude theuse of any other system. Some urethanes and even a wider varietyof epoxies fall into this category. Coatings with a thickness greaterthan 0.10 inch can normally be removed more quickly with otherattachment designs.How does a contractor know if a diamond grinding system is thesolution for a specific job application? The answer is to consult thevarious system manufacturers for their technical expertise. The generalrule is that a diamond grinding system will always remove a surfacecoating. Besides generally higher productivity rates, a diamond grindingsystem normally exhibits a long service life that can approach 4,600m 2for typical removal applications. The question then becomes a matterof production rates versus operating costs. Is there an alternative thatis even faster and less costly for the job? Depending on the specificapplication, there can be more productive alternatives.Surface Grinding: Tungsten CarbideProbably the most important attachments for coatings removal aretungsten carbide inserts. A common design feature of the systems currentlyon the market positions the insert at precise angles to the surface.During operation, the insert edge must first penetrate the coating andthen use a combination of weight and relative movement to scrape thecoating away from the surface.Ideally, for longer service life, the tungsten carbide formulation shouldbe as hard as possible. But given real world conditions, hardness anddamage resistance must be properly balanced. Several factors governthe service life of the insert edge, but experience has shown a singleedge to be capable of delivering one to eight hours of use.The most important factor that limits the effectiveness of tungstencarbide insert systems is the coating itself. If the thickness will notallow the insert edge to properly penetrate the coating, productivityrates can be significantly reduced. If the hardness value of the coatingalso prevents the edge from properly penetrating, the scraping actionwill be reduced. The process is weight sensitive.Therefore, adding external weight to the surfacegrinder can substantially increase productivity rateswhen removing marginal materials. However, thevast majority of paints, material residues, epoxiesand urethanes can be quickly and easily removedwith the tungsten carbide insert system attached toa dual head surface grinder.How do you determine if such a system willwork for your project? The answer is to place theblunt edge of a standard file against the coating. Tiltthe file so that the blunt edge makes a 15° anglewith the surface and press down on the file handle andmove back and forth. If the blunt edge begins to remove the coating, thetungsten carbide insert system will probably be an effective solution.PlanersSometimes referred to as scarifiers, surface-planing equipment isnormally used to deliver a very destructive action against both verticaland horizontal surfaces. Sizes range from small handheld units to largeself-propelled machines. Their most common uses include removingtraffic lines, milling misaligned concrete slabs and preparing floors fortopcoat applications.ScabblersUse of pneumatically powered scabblers is normally reserved for removalof thick layers of concrete from floors and walls. Scabblers produce fast,effective results when removing base materials. The secret of using ascabbler for coatings removal is bit configuration combined with reducedairflow and pressure rates, which work in unison to regulate piston speed,

impact energy and number of blows per minute. Theseparameters control the actual work performed by thetool. By controlling the impact force and movementfrequency, the destructive nature of the bit can also becontrolled. Determining the right combination of airflowand pressure can remove coatings with surprisingly littledamage to the surface material.”The FutureDemolition contractors are faced with a growing number of challengesthat directly affect the bottom-line operation of business. As competitionforces contractors to diversify services, being able to perform a widerange of surface preparation related tasks will be an important step inmeeting those tough business challenges for years to come. Selectingthe proper machine and process involves accumulation of experience,skill and practical sense. With more advice and experience from themanufacturer, profits will be more quickly maximized and relatedproblems minimized.New SG24/GHP Propane-Powered SurfaceGrinder from General EquipmentGeneral Equipment Co.’s SG24/GHP Propane-Powered SurfaceGrinder is a new grinder designed to break upsoft to hard surface deposits, and to clean, polishor expose aggregate slabs for a multitudeof purposes. The propane conversion allowsfor use indoors when electric models are notan option. The twin counter-rotating discs canwork a 24-inch by 12-inch area. An increased wheel baseplaces more weight over the rotating heads, meaning addedpressure to the floor or work surface to produce better results.The propane-powered SG24/GHP is also ideal for buffing andpolishing terrazzo and marble surfaces, and for removing floorcoatings, such as urethanes.The SG24/GHP is available with a wide variety of attachmentsto accommodate many different job demands. Attachmentoptions include scarifiers, wire brushes, grinding stones,Clean Sweep floor brush, CARB-A-TACH carbide grindingsystem, DIAM-A-TACH diamond segment grinding systemand the SCRAPE-R-TACH coatings removal system. Otheroptional equipment includes the PLAS-T-LOK attachmentmounting wedge and the Safety and Dust Shield.www.generalequip.com2 0 1 0DEMCON - TheNew GlobalMeeting PointTechnology, Products & Methods for:Demolition • Hydrodemolition • Recycling• Concrete Sawing & Drilling • Diamond Tool Technology• Concrete Floor Preparation & Polishing • Collection of Dust and SlurryPCB & Abestos Removal • Environmental remediation...and truly a lot more“Only for Professional’s”9-10 September, 2010 • InfraCity, Stockholm • SwedenPhone: 08-585 700 46 • Fax: 08-585 700 46 • www.demcon.se • info@demcon.seGOLD SPONSORS SILVER SPONSOR Partnering OrganizationsSupporterIACDS - International Associationof Concrete Drillers & SawersSwedish Concrete Sawing & Drilling AssociationSwedish Demolition AssocationOrganizerOfficial Magazines

“Power Drive” instThe Swedish companyScanmaskin hasbeen supplying othermanufacturers flooringequipment since1975. But since 2003the company has beenmanufacturing andsupplying its own assortmentof machinesfor floor preparationand polishing of concreteand stone floors.Now with a brand newproduction facilityScanmaskin is preparingto conquer theworld market.Scanmaskin’s machines waiting tobe delivered to customers aroundthe world.The new premises in Lindome, Sweden.A lot of manufacturers and suppliers to the global buildingand construction industry are suffering from the recessionand few new machines are being purchased. Contractors areusing their existing equipment until it literally falls apart. Itis mostly consumables that are bought to keep the equipmentgoing. But some manufacturers are affected less than othersand one of those is Scanmaskin Sverige AB, based in Lindomeoutside Gothenburg, Sweden.Increased export“Of course we also sense the recession but in general we managerather well and better then we have expected. And now we feelthat business is taking off,” says company founder, part ownerand President Claes-Göran Bergstrand. “Our sales level is justover EUR 270,000 (US$408,000) per month, which I thinkis satisfactory and at a level where it should be.”It is mainly the increasing export activities that have contributedto the improvement. In recent years Scanmaskin hasstrengthened its presence in the European market by buildingup a strong network of distributors. Scanmaskin has distributorsin all German speaking countries as well as France, Benelux,Spain and Portugal. They also have their own subsidiaries inNorway and Finland as well as distributors in Denmark andthe Baltic states. About 70 % of the current sales come fromthe Nordic region. The goal within the nextfew years is for exports outside the Nordiccountries to reach half of the total companyturn over. Current the turn over is aboutEUR 5.6 M (US$ 8.2 M) but the goal is toreach above EUR 17.5 M (US$ 26.1 M) by2012. With the same sales speed as of todaythey have very good chances to reach theirgoals in 2012.“But we need to strengthen our exportoutside EU to reach our goals andwe are getting there slowly. Today we sendmachines through our own distributors inthe US, Australia and New Zealand. We alsohave directly to other markets like countriesin the Middle East,” says Marketing ManagerPaulo Bergstrand, who is also part owner ofthe company.In Australia they recently set up a co-operation agreementwith Traxx Construction Products, headed by Lloyd Williams.Traxx is a new company but the people behind it have beenworking with the professional concrete sawing and drilling,demolition and floor grinding industries for decades. “Traxxis very aggressive with their sales and we have good hope forAustralian sales in particular,” adds Paulo.The cogwheel is an important partof the patented drive system “PowerDrive” from Scanmaskin.From the left Claes-Göran Bergstrand, Paulo Bergstrand andMartin Persson with the latest development Scan Combiflex500 PD.“Epoxy still dominates”Scanmaskin is not putting on the brakes during the recession.Instead it is full speed ahead and a sign of that is the new headoffice and manufacturing facilities. The new plant is aboutsome 2,000 m 2 , with 1,600 m 2 making up the new productionarea and the rest offices for marketing and administration.The new premise in Lindome has 20 employees. Theactivity is divided between the two companies Scanmineral andScanmaskin. Scanmineral manufactures filler components likeepoxy to joint free industry floors. Scanmaskin develops andmanufactures machinery, equipment and tools for grindingand polishing of concrete floors. The current turn over of EUR5.6 M (US$ 8.2 M) is divided about 50/50 between the twocompanies, but Scanmaskin grows faster. But still joint freeepoxy floors are a strong market and dominating. Polishedconcrete floors get a lot of attention today but according toClaes-Göran and Paulo it is an 80/20 relation between the two24 PDi • Is s u e 4 - 2009 • Oc t - No v

ead of Recessionsectors. Polished concrete floors are quickly gaining ground andthey believe that the relation will be 60/40 in a few years.The business in Scanmineral is still very important and alot of floor grinders are sold for floor preparation and removalof glue and epoxy to make new epoxy floors. The environmentalaspect has long been a big issue in terms of epoxy floors as thistype of floor contains a lot of chemicals. Today several new typesof more environmentally friendly coatings are available.Products with “Power Drive”It was in 2003 that Scanmaskin started manufacturing itsown floor grinders. Until 2003 Scanmaskin sold the Dutchtrademark Diamatic, which is now owned by Blastrac, inSweden. But today the range only contains Scanmaskin’s ownassortment of eight different models. The smallest is the edgegrinder Scan Combiflex 180 EG followed by the floor grindersScan Combiflex 270S, Scan Combiflex 45, Scan Combiflex500 PD, Scan Combiflex 500i, Scan Combiflex 650 and ScanCombiflex 700 RC. Scan Combiflex 700 RC is the biggestmodel with three grinding heads and a grinding width of 700mm. It can be equipped with a remote control and manoeuvredwith either radio control or cable. The big news is the new ScanCombiflex 500 PD. PD stands for “Power Drive” which is apatented technical solution for the drive of the grinding headsthat optimizes the use of the machine up to 90 to 95%. Thestraps that pull the grinding heads have been replaced with acogwheel. The Power Drive function is available for grindingconcrete and stone.“Power Drive gives the machine much more power, itbecomes more stable, and the operation is softer and even asthe problems with skidding straps are eliminated. The strapsand the fact that they are skidding often reducers the impactof the machine as available power is maybe only up to 75 to80%. We have had the cogwheel on our 650 and 700 modelsbefore but now it is standard even on the 500,” says ScanmaskinTechnical Designer Martin Persson.Another new machine is Scan Combiflex 650 built fortough treatment and grinding of large areas. It incorporatesseveral characteristics that makeit safer for operators. The 650is also available with differentoptions. A water hose can beconnected or a special water tankinstalled for the access of waterduring wet grinding.Satisfied customersThe goals for Scanmaskin will beachieved by releasing a numberof new models in the years ahead.Several new products are in thepipeline and a new large machinewill be released during 2010.Focus is on floor preparation ofconcrete and terrazzo floors aswell as wood. But Scanmaskinalso wants to develop the conceptfor polished concrete floors theycall Glossy Floors.Scanmaskin has a variety of clients, which are generalflooring companies, light demolition, renovation and concretecutting contractors as well as the rental industry. Oneof these is the flooring company JIGAB based in Jönköping,Sweden. JIGAB used the Scan Combiflex 700 RC to grind anasphalt surface that had to be replaced with an epoxy floor.JIGAB has several Scanmaskin models and is very satisfiedwith the brand. “I think the remotely controlled 700 RCworks great. The radio control is great and the machine isstrong and very smooth to work with,” says JIGAB operatorSteve Lordan, adding that the radio control makes the workvery easy as the machine precisely follows his commands.Polishing of concrete floors is growing in demand but stillepoxy dominates and he estimates that polished concretefloors represent about 40 % of the work for JIGAB andthe rest is epoxy.www.scanmaskin.seAbove Steve Lordan with the ScanCombiflex 700 RC. Below from the leftSteve Lordan from JIGAB and one ofScanmaskin’s salesmen in SwedenJohan Lindqvist.Is s u e 4 - 2009 • Oc t - No v • PDi 25

Like most machine and equipment sectors within theconstruction industry hydraulic, pneumatic and petroldriven breakers have suffered badly during 2009.Serious drop in 2009The downturn appears to have come to a halt, but saleswill remain on the same low level throughout 2010 andwill slightly increase in 2011 and 2012. Companies PDicontacted believe there will be a dramatic drop this yearand could end up half the size of figures achieved in 2008.With so many small breaker manufacturers in Asia it ishard to estimate total sales of breakers, but could be nearthe 40,000 mark and about half of sales in 2008.Contractors have less work so their lower income haslead to far fewer purchases of new equipment. However,many contractors are in need of updating and renewingtheir machine and tool fleets, but instead they are repairingand maintaining their old equipment while replacementis put on hold.Activity beats the crisisThe downturn will probably lead to fewer suppliersand the weakest will probably try to offer products atlower prices and this will have a negative impact on themarket. Those bigger suppliers with power, strength andare prepared for the downturn will survive. They will usethe downturn as an opportunity to boost their market positionsand possibly lead to increased market shares. Thisis the time for continuous product development andreleases of new products. But this cannot bedone unless suppliers prepare for thegood times a head. The key isto maintain market appearance in a downturn and evenmore so than in the good times. Only a few suppliers reallyfollow this principle and will have a very good chanceto come out even stronger after the recession. It isheartening to see that many breaker manufacturersare practicing this philosophy.Atlas Copco attacksAtlas Copco is a very good example of a manufacturer thatis attacking the market and has released several new productsduring the last 12 months. The company has addedthe SB 452 breaker, the seventh model in its solid bodylight breaker range. The SB 452, for use with excavators upto 13t, offers the highest performance and breaking powerin its class thanks to a new hydraulic system that delivershigher efficiency and improved energy recovery.New since July this year is the MB 750 hydraulicbreaker with reduced lifecycle cost and up to 54 % morepercussive performance. Two thirds of the life cycle costof a breaker is made up by factors as operator cost, energyand fuel consumption, as well as service and maintenancecost. To reduce the life cycle cost of machinery and tools isa major market demand and Atlas Copco´s latest additionto the medium breaker range, the MB 750, matches thischallenge and with more percussive performance comparedto its predecessors.More percussive power does not mean that the breakeradds extra weight to the carrier. Thus, the MB 750 allowsthe use of a smaller breaker and carrier for the same kind ofjob. This helps to bring the investment cost to a lower leveland reduce the fuel consumption significantly. Togetherwith increased productivity these are the main contributionsto reduced lifecycle cost.The high operational efficiency of the MB 750 isdevoted to a combination of oil andgas power and energy26 PDi • Is s u e 4 - 2009 • Oc t - No v

ecovery by utilizing the recoil effect in the best possibleway. This boosts the output power of the breaker withoutincreasing the hydraulic input power of the carrier, whichresults in less fuel consumption during operation.Atlas Copco breakers contain a highly effectivenoise and vibration dampingsystem. The new MB 750 is noexception with its guaranteedsound power level of 118 dB(A).Atlas Copco’s VibroSilencedsystem isolates the percussion mechanism acoustically fromthe external guide system and helps to prevent damagingvibrations that could be detrimental to both the carrierand the operator.A new feature on the MB 750 is the double retainerbar system, which maximizes the service of the tool andretainer. Extra long retainer bars provide a maximumcontact surface to the tool and the lower hammer, andthey can be used on both sides for extended service life.Double retainer bars offer higher wear resistance than aretainer pin and are a reliable and proven locking systemfor the working tool.The MB 750 is optionally available with the patentedDustProtectorTM II, a two-stage sealing system with coarseand fine wipers that reduce the penetration of abrasive dustinto the lower part of the hammer. DustProtectorTMII also keeps the lubricant around the wear bushing fora longer period of time, lowering grease consumption.The system reduces wear on thebushings and the hammer andprotects against damage. The MB750 is ideal for secondary breaking,demolition, excavation and trenching,tunnelling, and special applicationssuch as underwater.Another new breaker is theHB 3600, which fits the 35-63tcarrier weight class. It delivers 46%more performance per kilogramservice weight compared to theaverage of other hydraulic breakersin this class. And compared tocompetitive products of equivalentweight, the HB 3600 offers a 30%higher efficiency, the companyclaims.During 2008 Atlas Copcosold more than 10,000 small breakersin the 50 to 550 kg class. Threeyears ago, the company launchedthe first of the new generation ofsolid body breakers based on anew manufacturing method andnew body design. Atlas Copco haslaunched the mid-range model, theSB 302, for excavators of up to 9t.The slim design of the SB 302 makes positioningeasy. The compact dimensions also facilitate working inconfined applications such as indoor demolition work,along house walls and in narrow trenching. The SB 302offers the highest performance and breaking power in itsclass thanks to a new hydraulic system that delivers higherefficiency and improved energy recovery.In July Atlas Copco also launched the new TEX PErange of vibro-reduced pneumatic hammers. By re-thinkingthe design of vibro-reduced pneumatic hammers, AtlasCopco has developed three unique hammers, containinga number of features like a new vibro-reduced housing,multiple gripping surfaces and a large D-handle.The new range comprises the chipping hammerIs s u e 4 - 2009 • Oc t - No v • PDi 27

TEX 05PE, developed for smaller jobs in softer material,and the medium-weight pick hammers TEX 09PE andTEX 12PE, designed for medium to heavyapplications in brick, concrete or otherhard materials.The multiple gripping surfacesgive the operator the possibility ofchoosing an optimum working position.All three hammers have a large D-handle with enough room for a glovedhand. TEX 09PE and TEX 12 PE arealso equipped with a flexible front handlethat provides excellent support.RedHawk from CPChicago Pneumatic, part of the Atlas CopcoGroup, is launching a new gas poweredbreaker Red Hawk. This is a tough and easyto handle tool that does not depend on anexternal power source with hoses or cablesattached.It is an ideal tool for quick jobs and easyportability, such as use in breaking concrete,cutting asphalt, tamping and compactingsoil, driving posts, fences, rods or spikes,in soil sampling and in driving profiles andtubes. Transportation to and from a worksiteis in a van or the back of a car.The vibration level is unmatched inthis tool class and at 2.4 m/s 2 is by far thelowest level on the market. Thanks to newvibration-dampening handles, a slim body designand a low service weight of 22.5 kg, Red Hawk is atool that offers maximum ergonomic protection andeasy handling for the operator.An easy engine start, due to efficient chokecontrol and carburettor, rounds off a state of the art28 PDi • Is s u e 4 - 2009 • Oc t - No vproduct that completes the Chicago Pneumatic handheldproduct range.Chicago Pneumatic is well knownfor its pneumatic tools and in 2008 thecompany added a wide range of handheldhydraulic tools and the new gas poweredRed Hawk breaker completes the handheldrange.Technical data:Red Hawk, Weight, lbsLengthDepth, inchesWidthTool shankModel50 lbs (22.5 kg)27.3 in (694 mm)11 in (281 mm)23 in (585 mm)1/2 x 4 1/4 in(22 x 108 mm)Sound level, dB 107(Acc. to ISO 3744)Vibration level, m/s 2 2.4(Acc. to ISO 8662)Engine type185 cc1-cylinder, 2-strokePower, kW 2Cooling system Forced airStarter system Recoil starterRec. fuelUnleadedOil typepremium two-strokeOil mix 2% 1:50Fuel capacity, Gal .35 (1.2 l)Fuel con., Qt/hr 1.48 (1.4 l/hr)Impact energy, J 24Impact rate, bpm 2600“Hilti breaks the rules withthe new Hilti TE 1000-AVR”Performance and operator comfort come together withthe new Hilti TE 1000-AVR Breaker. Featuring thelowest vibration in its class, the TE 1000-AVR has thepower for outstanding demolition productivity yet offersthe flexibility to reduce impact for precision work. Foreverything from demolition of concrete slabs to diggingin clay to heavy floor tile removal, the TE 1000-AVR isthe perfect choice.With 16 foot-pounds of energy, the TE 1000-AVRprovides a demolition impact unparalleled in its weightclass, making it a productive tool for a wide range of demolitionapplications. Even with all that power generatedby the 1,600-watt motor, the TE 1000-AVR is built forlong service life. An active cooling system reduces wear andtear, the three-chamber sealing helps keep dust out of thetool and the innovative brushless SR motor eliminates theneed to replace carbon brushes. The result is longer intervalsbetween service and twice the expected tool life.Utilizing Hilti’s AVR, an advanced vibration reductionsystem, the TE 1000-AVR achieves the lowest vibration inits class, aiding operator comfort and allowing the operatorto be more productive by working longer. For precisionwork, the TE 1000-AVR’s Power Reduction Switch cutsthe impact by 30% to improve handling and control insensitive applications.The TE 1000-AVR’s flexibility for use in a variety ofapplications is due to its compatibility with an array of Hiltichisels. Pointed, narrow, flat, tamping and spade, Hilti TE-SP self-sharpening chisels provide strong breaking powerand are completely compatible with the TE 1000-AVR.Also compatible is the new Hilti TE DRS-B Dust RemovalSystem that reduces cleanup time and captures fine dustfor a better working environment.The Hilti TE 1000-AVR is built to provide long-termservice under the most rugged conditions and is backedby Hilti Lifetime Service, a unique service agreement thatincludes two years of no-cost coverage.JCB’s new low vibration breakerInnovative technology has resulted in the creation of a newJCB handheld breaker with hand arm vibration levels,which are more than 50% better than any other breakerin its class, the company claims.The specialist technology within the HM25LV includesa new power cell to deliver unrivalled blow energywhile a revolutionary new concept in vibration controlmeans that at 1.59m/s 2 (BS8662-5) it is the lowest vibrationhandheld breaker ever made. This equates to a three-axislevel of around 3.2m/s 2 , which is less than half that of anycompetitor’s equipment. Operators can now safely usethe breaker for a full eight-hour working day without riskof exceeding recommended HAV levels longer than anyhydraulic or electric breaker.JCB developed the concept in conjunction with aleading vibration research university following a visionof eliminating contact between the breaker and handles.The groundbreaking system dispenses with the traditionaldesign in which HAV was controlled by conventionalsprings and rubber bushes. Instead, the handles on theactive head of the breaker are effectively floating as thepin is supported by hydraulic pressure. As a result, theonly vibration in the handles comes from friction againstlinear ball bearings. The handles on the HM25LV are also50mm lower than on the previous HM25 version andfeature increased protection.FRD XPerience fullyimplemented in EuropeLatest additions from FRD are the FRD XPerience Lineof breakers. A new shock-absorption system minimisestransfer of vibrations to the base machine, considerablyreducing loads for the user. Thanks to a new guidingsystem in the casing and rubber gaskets in the bores, anextra noise reduction of 6 dB(A) has been achieved. Theseven models in the new FRD XP-Line weigh from 1.3 tfor the F19XP up to 6.5t for the F100XP and are designedfor excavators of 12 to 100 t.The breakers, which are also suitable for underwaterwork, are fitted with a piston lift adjustment, which adjuststhe number of strokes in accordance with the specificationof the base machine. Like its earlier models, the FRDXPerience-Line has an idle-blow prevention system. If the

eaker is not in the correct working position, the breakerwill not start at full power. This relieves the chisel androd pins, promising longer life. The front chisel guidancesleeve can be changed from the outside, without the needof removing the breaker from the casing.News from PromovePromove chose Intermat to present two new hydraulicbreakers. The XP300 fills the gap in the compact range,and the giant XP7000 for heavy breaking in quarrying andother severe applications.The XP300, equipped with a 80mm chisel, is designedto work with 5 to 6t excavators and a range of skid-steerloaders. It has an anti blank-firing system, square-sectionpercussion body and vibration and noise insulation foroperating under the strictest urban regulations. The biggerXP7000 features the combined gas and oil workingprinciple, blank-firing prevention system, auto-greasingpump, adjustable frequency/energy, full square-sectionpercussion body and high back pressure. An underwateroperation and tunnelling kit is optional.Two new breakers from SandvikWith a working weight of 1220 kg and an impact rate of490 to 780 blows per minute, the new Sandvik BR2155breaker has been designed for carriers in the 16 to 26 tweight class. The BR2155 is a design concept incorporatingretrofit options that provide users with exceptionalflexibility to match the breaker to their application andmaterial requirements.The new BR2155 encapsulates the very latest inbreaker design. A slim body, robust steel housing, areplaceable wear package and an integrated lubricationsystem make up the new BR 2155.Customers can choose from a range of options tomatch applications, material and budget. This flexibilityenables users to select an appropriate specification onpurchase, or to retrofit the breaker, and ensures that thebreaker is always to the latest and most appropriate configurationas application requirements change. Key Retrofitoptions include:• Safety Valve – Protects the breaker frompoor or inappropriate hydraulic installation• Ramlube III – An integrated lubricationdevice mounted inside the breaker providesoptimum tool bush lubrication• HD Set – Heavy-duty housingoption with stone claw for demanding applications.Is s u e 4 - 2009 • Oc t - No v • PDi 29

The BR2155, being offered in sound suppressed configuration,also benefits from a lightweight design that affordsthe unit a class-leading power-to-weight ratio and highproductivity levels in a wide variety of demolition, recyclingand other industry wide applications. The proven fixedblow energy concept available in other models of breakerin the Sandvik range is also included in the new BR2155,along with the proven VIDAT tie rod system.Durability and reliability, two main features of allbreakers from Sandvik, are fully integrated into the designof the new BR2155. A tool of 118 mm diameter ensuresoptimum wear and excellent impact performance anddurability. Heavy-duty connecting hoses, supplied withthe breaker, ensure reliability, while thesafety valve provides protection for thebreaker against hydraulic overflow andthe Ramlube III integrated lubricationsystem ensures tool bush lubrication.ModelBR2155Impact Rate (bpm): 490-780Operating Pressure (bar): 140 to160Max. Tool Diameter (mm): 118Carrier Weight Class (t): 16 to 26Hammer Work. Weight (kg): 1,220The other new addition to the rangeof hydraulic breakers on offer fromthe Breakers Lahti division of SandvikMining and Construction is the1,700kg BR2577 suitable for carriersin the 23 to 28 t range. With an impactrate of 450 to 750 blows per minute,the new BR2577 also features Sandvik’sFixed Blow Energy system thatensures optimum impact energy withevery blow, regardless of hydraulic flowfluctuations.A key feature of the new breaker isits flexible design that allows customersto choose from a range of options asa retrofit to match their application,material and budget. This flexibilityenables customers to retrofit the hammerafter purchase and ensure that thebreaker is always to the latest and mostappropriate configuration as application requirementschange. Key Retrofit options include:• Safety Valve – Protects the breaker from poor orinappropriate hydraulic installation• Idle Blow Protector – Protects against blank firing30 PDi • Is s u e 4 - 2009 • Oc t - No v• Soft Blow Sensor – Reduces the impact power andfrequency in softer conditions• Ramlube – Carrier or breaker-mounted automaticgreasing system• Ramdata – Operating data collection• Ramona – Performance andoperation monitorwith operator alert system• Ramair – DustsuppressionThe new BR2577 also benefits froma lightweight design that affords theunit a class-leading power-to-weightratio and high productivity levels in awide variety of demolition, recycling,quarrying and other applications.Durability and reliability, two mainfeatures of all hammers from Sandvikare integrated into the design of thenew BR2577. A tool diameter of135 mm ensures optimum wear andexcellent impact performance anddurability. A safety valve providesprotection for the breaker againsthydraulic overflow and the Ramlubelubrication system ensures tool bushlubrication.ModelBR2577Impact Rate (bpm): 450 to 750Operating Pressure (bar): 135 to 145Max. Tool Diameter (mm): 135Carrier Weight Class (t): 21 to 30Hammer Working Weight (kg): 1,700Bobcat latest breakersIn September Bobcat announcedthat the company’s HB880, 980and 1180 80 Series breakers wereapproved for use on the new E55Wwheeled and E60 crawler excavators.All the breakers can be mountedusing the pin-on, Klac or Lehnhoff systems, three ofthe four mounting systems currently available fromBobcat.At the other end of the Bobcat excavator andbreaker ranges, the smallest HB280 breaker, previouslyonly approved for use with its integrated fixingcap on the company’s 316micro-excavator, nowhas the modular fixingcap system used in therest of the 80 series. As aresult it can also be usedon the new E08 and E10micro-excavators thathave superseded the 316model.The HB880 has anoperating weight of 232kg, works with flow ratesfrom 30-65 l/min andprovides a blow ratefrom 755-1150 bpm forwork on soft ground anda blow rate of 860-1310bpm when working onhard ground. With anoperating weight of 268kg, the HB980 breakerhas blow rates of 855-1060 and 1170-1450 bpm,respectively, and is designed for a hydraulic flow rangeof 45-80 l/min. The blow rates in the 1180 model are680-1070 bpm for soft ground and 820-1280 bpm forhard ground. This breaker has an operating weight of386 kg and works with flow rates from 55-100 l/min.With a flow requirement of 13-23 l/min, the 65 kgHB280 breaker has blow rate of 600-1450 bpm.The 80 Series hydraulic breakers from Bobcatoffer high performance, greatly reduced maintenance,and are easy to use. Designed for trenching, concretedemolition and general excavation work, the Bobcatbreakers feature a frame with a cylindrical design, providingimproved access to jobs in confined areas. Thebreakers are equipped with a special shield to protecthoses and fittings from damage.The innovative design of the breaker hydraulicsystem provides increased efficiency, ensuring a longerworking time without risk of overheating. Thebreakers also incorporate an effective soundproofingsystem, whereby the striking assembly is held top andbottom by suspension systems that are not in contactwith the outer cylindrical housing. In addition, thebreakers also present a novel internal design with fewermoving parts and no tie rods. As a result, the breakerscan be completely dismantled in less than five minutes,without the need for special tooling.

Update Used Productson Demarec.com Demolition & Sorting Grabs Polyp Grabs Pulverisers Shears Hammers Multi-Quick Processors AVAILABLE FOR EXCAVATORSFROM 10 TILL 110 TON

New Promove breakerin operation in ItalyThe Italian Promove XP7000 hydraulic breaker,launched at the last Intermat, is now at workin the quarrying applications it was specificallydesigned for.When blasting is not a viable option a largeexcavator equipped with a heavy and powerfulbreaker can be the answer to get high productivity.The Promove XP7000 could meet theserequirements as productivity in an 8-hour shift canvary from 400 to more than 2000m 3 accordingto the hardness of the rock. An average dailyproduction of 750m 3 was achieved on 1300kg/cm 2 monolithic white limestone.The main use of this class of hydraulichammer is primary breaking on the frontline. Inaddition, due to the blank firing prevention systemthe XP7000 can also be used for reducingoversize materials.Technical data XP7000Service Weight, kg 6900Tool diameter, mm 210Oil flow, l/min 320/400Working Pressure, bar 180/200Pressure Relief Valve, bar 260Number of blows, 1/min 280/580Impact energy, J 17700Max back pressure, bar 25World’s biggest forprimary crushingThe Indeco HP 18000 hydraulic breakerlaunched in 2008 by the Italian manufacturerIndeco is the biggest built to date. Several havebeen sold around the world, including one to theMarocca Group for use in a limestone quarry atAnagni in central Italy. The Indeco HP18000 isattached to a 120 t Hitachi 1200 excavator fittedwith a Lenhoff quick coupler. The HP 18000breaker coupled to the excavator does the workof two mid-sized machines and with a power of25,000 joules reduces the size of the hardestblocks of materials without any problems.The Indeco HP 18000 is part of a range thatis respected in the quarrying industry thanks to reliabilityand durability. The HP series has improvedon the features of the previous series, whichrevolutionized the hydraulic breaker concept byintroducing the possibility of modulating the powerand the frequency of the blow in relation to thehardness of the material. In the HP series thisfeature has been accompanied by a new shapeof the casing, which has been reinforced and nowable to ensure, along with all parts subject to wear,an even greater strength and durability.www.indeco.itPromove in severe conditionsThe Italian company Promove pays particularattention to quarrying applications as models inthe company’s heavy range of hydraulic breakersare used in the most severe conditions. Themodels XP4500 and XP3100 are often used inprimary breaking, while XP3100, XP2400 andXP1700 are mostly used in secondary breakingand reducing oversize material.The blank-firing protection system is a veryimportant feature and Promove breakers aredesigned to operate only when there is pressureon the tool. When an oversize block is broken,the hammer will not receive any pressure onthe tool and it will stop automatically preventingdamage to the hammer.Energy per blow and frequency are at the topof the market and the host excavator and operatorare protected against excessive vibration throughoversized shock absorbers. Other major featuresand advantages include square section cylinderswill fully encased tie-rods and a frequency andenergy valve, which adjusts to the hardness ofthe rock being broken.www.pmvpromove.it32 PDi • Is s u e 4 - 2009 • Oc t - No v

“It ran great”Newly launched in theUS, Husqvarna’s firstdemolition machine,the DXR 310, has alreadyhad the chanceto prove itself. Therobot recently demolishedthe foundationsof two large industrykilns at a paper manufacturingcompany inGeorgia, USA.The US demolition contractor Bluegrass is one of the biggestin the American demolition industry. As a controlleddemolition contractor for nearly 30 years, the companyhas extensive concrete cutting and breaking experiencefrom a variety of industrial demolition projects. Bluegrassuses a majority of demolition machines and has a largenumber of robots in its fleet. For the task of refurbishingthe foundation in two large industry kilns at a papermanufacturing company, they chose to work with Husqvarna’snew DXR 310. The mission involved removinglime powder build up, castable and bricklining from the 70m long kilns.The DXR 310 was lifted to the thirdfloor of the building, where the kilnswere located. The robot set to work intemperatures over 45°C inside the kilns.The robot first removed lime build upthroughout the length of the kiln. After that,8m of castable from each kiln plus the three layersof bricks at the entrances was knocked down. Therobot was run round the clock in both kilns forthree days. “The DXR ran great, we hade zerodowntime. Every function operated likeyou thought it would. The only issue wehad in six work shifts is that the limedust would accumulate where theextend-a-boom had grease on itand it would give a little troublebooming back in. Other than thatit was phenomenal,” saysBluegrass service managerCurt Ryals. “It’sa robust, compactmachine with alot of hittingpower. I particularlylike thedigital control box, with which you can troubleshootalmost anything. ”Technical facts DXR 310• Cast baseplate assures optimal weight distribution• High power in relation to weight with goodstability and long range• Compact and low-slung construction givesoptimal view and manoeuvrability• Simple to service and maintain• Power: 22 kW• Weight: 1900 kg• Range: 5.5 metres• Control system: Modular, digital CAN-based PLC• Support: Included in the standard version• Telescopic arm: Included in the standard version• Dimensions: width 780 mm, length incl.support 2000 mm, height 1030 mmIndian mine buysTabe breakersThe second largest privately owned miningcompany in India, Sesa Goa Limited, has boughttwo Tabe BA5 360VR pedestal breakers fromTabe agent Mining Supplies Corporation. TheTabe pedestal breaker, launched 5 years ago, isspecially designed for the mining sector and theones supplied to Sesa Goa are equipped withTabe AGB475BC hammers.Tabe aims to have a higher profile inIndia with its range of pedestal breakers, whichincludes pedestal breakers for mobile and staticcrushers.www.tabe-hammers.comIs s u e 4 - 2009 • Oc t - No v • PDi 33

Atlas Copco involvedin German City TunnelFive Atlas Copco attachments are involved in theconstruction of the 4km long Leipzig City Tunnelthat will provide a north-south link through thecity. Four new stations will join the city to thesurrounding countryside and the road and busnetwork. New stops will provide access to shoppingfacilities, university and places of culturalinterest, as well as in the central station.Contractor Kafril GmbH based in Großzschepa,about 40km east of Leipzig,is demolishingtemporary structures, built below the LeipzigMarket Square in the Bayerischer Bahnhof stationand central station, for the main tunnellingoperation. The company used two HB 2500and one HB 2200 Atlas Copco breakers. About20m below the surface of the western sectionmore than 4,000m 3 of reinforced concrete wasdemolished that had formed the temporarystructures erected as the station’s entrance andexit for the tunnelling machine. Anothertwo Atlas Copco CC 3300 hydrauliccombi cutters were used to crush theconcrete and rebar in one go.Under the Leipzig central stationsimilar demolition work is in progress.In the Bayerischer Bahnhof stationabout 1,500m 3 of concrete, neededto make the floor and access roadsfor the tunnelling machine, has alsoto be demolished. The new link isscheduled to open in 2012.www.atlascopco.comIntelligent demolition jobusing an Atlas Copco HB 7000and AutoControlDemolition work is often associated with bruteforce. It not only requires a fair amount of experienceand a proper understanding of what has tobe done, the right kind of equipment can alsomake the difference. Showing that demolitionwork is being done as a serious discipline wasdemonstrated by the contractor De Meuter, fromTernat, Belgium.“Nowadays, demolition contractors have tomeet increasingly stringent standards,” said AsterDe Meuter. “Sometimes we have to gut officebuildings, which are not completely vacated andmust remain operational. In such cases, noiseis a major handicap. That is why we often useAtlas Copco vibro-silenced hydraulic breakers,which are proven to be the most silent producton the market.”An example where these vibro-silencedhydraulic breakers were used was the demolitionof the IPM building in the Jacqmainlaan, Brussels,which had housed the old printing shop of the LaLibre Belgique newspaper. The foundations forthe printing presses were more than 2 m thickof heavily reinforced concrete with high rebardensity. “Usually our heavy-duty Atlas Copco HB3000, which is part of our standard machinery,should fill the bill,” says Aster De Meuter. “But theparticularly durable foundations and the locationof the site in the heart of Brussels required adifferent approach.”After a few days, the initial progress achievedwith two 4t hydraulic breakers was behind scheduleand a different solution was required. TheAtlas Copco HB 7000, weighing 7.7 t, seemedto be a good alternative. “With the AutoControlfeature, it is exactly the breaker we needed. Thishad an automatic changeover of the number ofblows controlling the impact energy to impactfrequency ratio in such a way that the maximumperformance was available at all times with aminimum of disturbance for the vicinity,” saysAster de Meuter.In solid material, the AutoControl increasedthe impact energy and decreased the impactfrequency. As soon as the reinforced concretegave way, the impact energy was reduced andthe impact frequency was increased. This combinationof impact energy and impact frequencywas the decisive element, boosting demolitionprogress and minimizing the disturbance causedby noise, vibration and dust. After only one day,the HB 7000 demolished more than the twosmaller breakers did in one week.www.atlascopco.com34 PDi • Is s u e 4 - 2009 • Oc t - No v

What has happened withinthe Hydrodemolition industryduring the last 12 months? Interms of new development thelast year has resulted in moreproduct development then everbefore.Hydrodemolition is a method of using very high-pressurewater to remove deteriorated and damaged concrete.The technique was developed in Sweden during the 1970sand is now an accepted method for repairs to concrete.Perfect for new bondingThe biggest advantage with hydrodemolition is that thehigh-pressure water only removes damaged concrete leavinga rough concrete surface for bonding new concrete.Mechanical demolition methods like jack hammers androtating milling heads cannot compete with hydrodemolition.Compared to mechanical methods that create microcracks in the concrete, hydrodemolition is the perfectsolution for efficient concrete removal. So far the onlything that limits hydrodemolition is the fact that water isinvolved and the technique is so far limited to areas wherethe water doesn’t do any harm to the surfaces prepared.It is rare to find traditional demolition contractors usinghydrodemolition as a technique. It is more specialistconcrete repair contractors, working with bridges, dams,34 36 PDi • Is s u e 34 - 2009 • Au Oc t g - No Se p v tdocks, quays, power stations, parking houses and concreteroad repairs that have found hydrodemolition the perfectway for quick and efficient concrete repair.The machineryHydrodemolition is carried out with self-propelled electricor diesel powered remote controlled hydrodemolitionrobots or special frames that can be attached to a concretesurface with a special water jetting nozzle moving ontracks or a frame attached to a carrier, like a telehandleror an excavator. There are also special frames to use forrenovating concrete pillars and other circular or unevensurfaces and are often tailor made for these special tasks.Hydrodemolition can also be used using hand held lanceson lighter demolition jobs.Sweden is still the technological hub for hydrodemolitionequipment with manufacturers like Conjet AB andAquajet Systems AB, which are considered the biggest andleading manufacturers in this field.The global marketThe size of international hydrodemolition market forcontractors and manufactures is difficult to assess. As itis a narrow segment manufacturers are quite reluctant torelease market sensitive information. But a rough estimationis that each of the European countries has a handfulof contractors offering hydrodemolition services. The USmarket is the biggest and most of the players are organisedand can be found in various directories such as the onefrom the Water Jet Technology Association (wjta.org).Hydrodemolition is also a growing service in the MiddleEast and parts of Asia like Japan.None of the manufacturers of hydrodemolitionequipment make their own pumps but buy them fromThe new Conjet Robot 324 was displayed at the SAIEshow in Bologna, Italy.specialist pump manufacturers like Hammelmann andWOMA. The pumps are often built in to special PowerPack containers equipped for hydrodemolition purposes.But the actual machines for hydrodemolition jobs aredeveloped and manufactured by the hydrodemolitionproducers. It is also common for contractors to tailor-maketheir own equipment.Two dominant manufacturersAlthough Conjet and Aquajet Systems are the two mainmanufacturers there have been few new developmentsuntil just recently.Aquajet Systems in Holsbybrunn in the south ofSweden announced a number of new products, whichwere introduced at a press meeting in Stockholm at thebeginning of the year. A number of new developments havebeen incorporated which can be summarised in the EqualDistance System, Intelligent Sensing Control, GraphicColour Display and the new and large hydrodemolitionrobot MAX Hybrid as well as the new environmentallyfriendly power pack ECOSILENCE.Conjet and Aquajet Systems operate differently. Conjethave had the widest range of machines while AquajetSystems has focused on a few base models that can beequipped with a number of attachments. But this situationis slowly changing with increasing number of attachmentsfrom Conjet and additional standard models from AquajetSystems and even more attachments.The Conjet range and new productsConjet currently has four base models, which are the Robot324 replacing the 322, Robot 364 STD, Robot 365MPA and the diesel driven unit Robot 432 D. Conjet alsomanufacturers a number of jetframes.Since Conjet Robot 322 was introduced in 1999 ithas become Conjet’s best selling robot and it has graduallybeen improved. Now some significant improvements havebeen made and the machine renamed Robot 324. The newfeatures include:Lars-Göran Nilsson, Executives Vice President Sales &Marketing Sales Manager and part owner of Conjet AB,demonstrating the new Conjet Jetframe 101 Nalta.

The world’s smallestand lightest hydrodemolitionunit, ConjetJetframe 101 ‘Nalta’,replaces hand lancesConjet AB is extending its comprehensive range of leadinghydrodemolition equipment with the launch of the latest revolutionaryhigh-pressure water jetting Conjet ‘Nalta’ Jetframe 101. Conjet ‘Nalta’is the world’s smallest and lightest hydrodemolition unit. It replacesthe dangerous and far less productive hand lancing method of hydrodemolition,as the ‘Nalta’ operator remotely controls all functions of theJetframe 101 a safe distance from the working area.Flexible, verstile and safeThe Conjet ‘Nalta’ Jetframe is very flexible and versatile as it mounts,climbs and operates on standard scaffold tubes, and as there are noelectrical sensors it can also operate under water. All components aresmall, light, easy to carry and position. The cutting head weighs 14 kg,the feed beam section 6 kg and each hydraulically controlled step unit,which are fixed to each end of the feed beam and automatically climbup and down standard scaffold tubes, weigh 9 kg. The trolley mountedhydraulic control unit weighs 90kg.Safety has been paramount in the design of the Conjet ‘Nalta’,which is a colloquial expression from Vilhelmina in Lappland in northernSweden meaning something very small. ‘Nalta’ operators do not needthe ‘spaceman type’ bulky and heavy protective clothing that is vital whenusing awkward and cumbersome hand held lances.Conjet ‘Nalta’ will eliminate the accidents that can occur with thehazardous hand lancing operations and has already proved to be considerablymore productive in pre-launch contract trials. “We are replacingthe dangerous hand held lancing operations and making them safer withour new and revolutionary ‘Nalta’ Jetframe,” says Conjet vice presidentLars-Göran Nilsson. “Contractors that have so far used the ‘Nalta’ duringon site contract trials have been very impressed with its safety andperformance. With a hand lance pump of 120 kW, generating 250Nreaction force, production will be between 2 - 3 times higher than witha hand lance. Because ‘Nalta’ can withstand a greater reaction force of600N, compared to 250N for a hand held lance, higher powered pumpscan be used increasing productivity even further up to 5 – 6 times. ‘Nalta’is also very easy and quick to set up and can work continuously, so thereis far less downtime compared to hand lancing, where operators haveto stop and rest every 20 minutes or so. Hydrodemolition with ‘Nalta’ isalso far more controlled, uniform and accurate and selectively removesonly damaged concrete. It will prove ideal for those contractors currentlyusing water jet hand lances”Replaces hand lancesThe new compact and lightweight ‘Nalta’ Jetframe complements thecompany’s extensive line of Jetframes, hydrodemolitionrobots, powerpacks, accessories and custombuilt equipment to cater for all possible hydrodemolitionprojects. The Conjet ‘Nalta’ Jetframe 101, thesmallest in the leading Swedish company’s range,has been specifically designed to replace hand lancesfor a large number of hydrodemolition applications,as the new equipment considerably increasesproductivity and dramatically improves safety foroperators. A number of innovations, protected byinternational patents, have been incorporated intothe ‘Nalta’ Jetframe 101, which can be quickly and easily integrated foruse on standard scaffolding tubes.The ‘Nalta’ Jetframe is supplied with high-pressure water from aJetframe 101 Nalta in operationin Stockholm.standard hand lance pump. The operator controls all movements of the‘Nalta’ Jetframe from a hand held portable control box and can operate onflat as well as curved surfaces with a radius as small as 400 mm. The NaltaJetframe is powered by a trolley mounted hydraulic unit that only needs tobe connected to a single phase 10 A, 230 V electrical supply.Conjet ‘Nalta’ is primarily intended for the hydrodemolition of concrete,but is also suitable for other applications, such as cleaningand de-scaling of steel. A different power head witha self driven rotor is available as an option that canbe used for numerous surface preparation tasks. Forexample, the ‘Nalta’ Jetframe 101 can achieve HB 2? grade cleaning on steel surfaces when operating atpressures exceeding 2,500 bar.The ‘Nalta’ Jetframe system consists of a feedbeam with an oscillating cassette, hydraulic unit anda remote control box. The oscillating lance, fixed tothe cassette, travels along the 1.1 m long feed beam,which can also be extended with two extra sections to a maximum lengthof 3.3 m. The angle of attack of the lance changes direction when it hits themanually set turning points at each end of the feed beam. This eliminatesThe new Aquacutter Evolution operating on a damrenovation project in Sweden. Picture showing verticalremoval up to 10 m in reach.the need for electric sensors, enabling the unit to be used underwater.Due to the innovative patent protection only one set of hydraulic hoses isrequired for controlling all functions of the ‘Nalta’ Jetframe 101, includingoscillating lance angle and cassette movements.The feed beam is attached at each end to a patented hydraulicallycontrolled step climbing unit. The two step units fix onto and automaticallyclimb up and down standard scaffold tubes after each traversing pass ofthe cradle and lance. The step units can also operate on scaffold tubesbent to a minimum radius of 400 mm, making the versatile ‘Nalta’ Jetframeideal for working on curved as well as flat surfaces.www.conjet.comIs s u e 4 - 2009 • Oc t - No v • PDi 37

Pictures above showing the new Conjet Robot 365with a mast, which radically improves the access.• A completely new front with oscillating cassetteand feed beam• The arm is normally mounted on the centreof the feed beam, but on this version canbe mounted with 300 mm offset onboth sides, which increases thereach on mainly vertical surfacesincluding below the robot.• The angle of attack can be set to ±45°, which will improvethe reach into corners.• The front end has a more compact design so that it can beused in tighter areas.• The feed beam can be tilted from -10° to 90°, which meansthat the robot can perform hydrodemolition in front.• Absolute position sensors that will provide theposition of the cradle from the reference point, as wellas the angle of the lance in degrees.• An upgraded control system, which can store someparameters for future use and reference.• Sensors in the tracks that monitor and controlthe step length that will enable the robotto automatically travel straight.• A new tower attachment will be introducedto enable the robot to performhydrodemolition on verticalsurfaces while standing still.• The attachment kits for smallround tunnels will be availablefor the Conjet Robot 324.New Conjet Robot 365MPAMost owners of a Conjet 360-series robot with MultiPurpose Arm consider it to be the best hydrodemolitionRobot in the market. The reach and flexibility of the armwith short set up time is highly appreciated. The 364version was only introduced two years ago with hydraulicallyextendable drive wheels, adjustable height of steeringwheels as well as new slew drives in the arm. With furtherupgrades Conjet is introducing the Robot 365MPA andimprovements include38 PDi • Is s u e 4 - 2009 • Oc t - No v• A completely new front with oscillating cassette and feed beam.• The feed mean is normally mounted in the centre of the arm,but can be offset 470 mm to each side, which increasesthe reach on mainly vertical surfaces.• The angle of attack can be set to ±45°, which for instance willimprove the reach into corners. Additionally the robot canbe programmed to follow the corner.• The front end has a more compact design so that it canbe used in tighter areas.• Upgraded control system with absolute position sensors.• Optional mast mainly for extended reach below the robot.Conjet JetframesUntil recently Conjet had two standard types of framesystems, Jetframe 102 and Jetframe 122. But at therecent SAIE show in Bologna, Italy the new Jeframe 101‘Nalta’ (see article on page ) was introduced equippedwith several new characteristics. Conjet ‘Nalta’ is theworld’s smallest and lightest hydrodemolition unit. Itreplaces the dangerous and far less productive hand lancingmethod of hydrodemolition, as the ‘Nalta’ operatorremotely controls all functions of the Jetframe 101 a safedistance from the working area.Conjet has also upgraded its range of PowerPacks. The company has also recently built a new assemblyplant and storage at their premises in Haningeoutside Stockholm. Conjet had a turn over of nearlyEUR 2.7 M.The Aquajet Systemrange and noveltiesAquajet System had a turn over of nearly EUR 2.6 Min 2008. At the press meeting earlier this year in Stockholm,Aquajet Systems President Stefan Hilmersson gavea general presentation of the company. He also explainedthe advantages of hydrodemolition in comparison withmechanical methods. “One hydrodemolition robot isequal to at least 10 jack hammers. Not to forget thateach jackhammer is operated by one person also exposedto hazardous vibrations. This should be compared to ahydrodemolition operator standing at a safe distancefrom the actual operation over looking the hydrodemolitionwork,” he said.Aquajet Systems, like Conjet, exports morethen 90% of its production. The product rangecontains two basic models, HD/HE and HVD/HVE. D stands for diesel powered and E forelectrically powered. The Aquajet Systems modelsare available in different versions as standard andEvolution. Evolution means increased technicalcontent like a higher level of computerisedcontrol and operational functions. HD/HE canbe fitted with a Robot Arm suitable for confinedspaces like narrow tunnels. The HVD/HVE models are based on a towerprinciple, which increases the reachradically and is perfect for largescale projects where long reach isneeded. It is also suitable forpillar renovation by using aspecial pillar hydrodemolitionoption.After 18 months of development work AquajetSystems is taking an important step further by introducinga number of improvements including the newequal distance system.Latest version of EvolutionThe new Evolution concept adds a lot of new advantagesto the hydrodemolition technique. For instanceit is now possible to use the method according to aspecial geometrical pattern. Instead of demolishing anunnecessary large area the new Evolution makes it possibleto remove only the concrete area that is damaged.Aquajet Systems Jan-Åke Petersson (top) and StefanHilmersson (above) at the Aquajet System’s pressmeeting in Stockholm earlier this year.The hydrodemolition work becomes faster, more exactand more efficient. Aquajet has also developed the EDSsystem, which means that the distance between nozzleand the concrete stays the same even if the angle of thelance is changed. The result is better and more efficienthydrodemolition. EDS is patented and is today standardon all robots and frames from Aquajet Systems. Anothernew function is the Intelligent Sensing Control system,which means that all electric sensors and cables have beenmoved away from the front of the robot where most of thewater and slurry accumulates. All electric parts have beenplaced in a safe location on the robot in order to minimizeelectric disturbance of the steering system. ISC reducessignificantly all breakdowns and search for malfunctions,which increases the efficiency. Also ISC is a standardfunction and is patented. There is also the new graphicalscreen TFT that is part of the new control box EvolutionController that was launched some time ago.The hybrid robot from Aquajet SystemsAquajet System has also extended its range with the newhydrodemolition robot Aquacutter Max Hybrid. Themodel was originally tailor made for a client and can runon both diesel and electricity by just switching a button.The model is 20% larger then the standard robots in therange and can work up to 10 m vertically and above.Aquacutter Max Hybrid is also equipped with the functionsEDS and ISC. During last year Aquajet Systems alsolaunched a new type of environmentally friendly powerpack named Ecosilence. The power pack contains a lowemission diesel and the container is vibration and soundisolated. It lowers noise by about 50% and was developedfor use in sensitive areas like inner city locations. TheSwedish hydrodemolition contractor E-Schakt recentlyused it on a large infrastructural project in Stockholm citycentre. Thanks to the new low emission diesel motor alsothe fuel consumption can be lower significantly during ayear without loosing efficiency.NLB Corp. in the USBesides these two manufacturers there are a few others,

To the left the two new robots, Aquacutter Evolotion and Max Hybrid. Above the new environmental friendlyPower Pack Ecosilence.The pictures above are describing how AquajetSystem’s robots can be pre-set to work accordingto a geometric pattern.which seem to keep a low profile. One of them is NLBCorporation in Wixom, Michigan, USA. NLB produceboth hydrodemolition robots and frames. Current robotis the NLB Model 550 Concrete Buster, which is acompact, self-contained, hydrodemolition robot that canbe used on walls, floors and ceilings. The unit’s compactsize and unique design allow it to work in tight or lowoverhead clearance areas. The system utilizes a 55 HPdiesel engine to power the hydrostatic steering, brakeand drive systems.The NEMA 4 rated PLC control system allowsthe operator to control the spin jet rotation speed andtraverse speed, robot movement and boom extension,retraction, and rotation. The robot can be operated upto 8m away by the integrated remote control joystick foroptimum operator safety. It is capable of operating atpressures to 1400 bar and flows to 230 l/min. The overalldimensions of the vehicle are 3.9m long x 1.9m x 1.9mtall and it weights approximately 3.4t. Besides the robotthe NLB Corp. also manufacturers the frames Model400 and Model 4500. More information on NLB Corp.is available at www.nlbcorp.com.US JetAgeAnother US manufacturer of hydrodemolition equipmentis US JetAge. The company has no self-propelled robots,but has a wide variety of other types of hydrodemolitionand water jet equipment and spare parts. Moreinformation is available on the company’s website onwww.jetage.com.PTC from ItalyAt the recent SAIE show in Bologna, Italy the Italiancompany PTC, Professional Waterjetting Equipmentdisplayed some of their products. PTC President GiancarloFranchini has a lot of experience with water jetand hydrodemolition equipment. The company mainlyproduce different types of frames and other types of hydrodemolitionsystems. More information about PTCcan be found on www.ptcitaliana.com.Is s u e 4 - 2009 • Oc t - No v • PDi 39

Above the US NLB Corp. hydrodemolition robot NLBModel 550 Concrete Buster.The 225 m long waste water channel was betterbuilt and reinforced then expected. Hydrodemolitiontechniques where used to remove the sides of thechannel and remote controlled robots to remove theconcrete channel itself.The Italian hydrodemolition equipment manufacturerPTC’s stand at the SAIE show in Bologna.The Swedish hydrodemolition company Waterjet EntreprenadAB, with three branch offices in Sweden, is considered thebiggest hydrodemolition contractor in Europe. The companyhas 55 employees and an annual turn over close to EUR10 M. The company is possessing a large equipment parkcontaining 25 diesel pumps for hydrodemolition, 10 remotelycontrolled hydrodemolition robots, 10 frame system and anumber tailor made pillar robots and other types of specialequipment. Waterjet work all over Scandinavia and sometimesalso in other parts of Europe and has capacity to take on reallybig projects. They offer all kinds of hydrodemolition serviceslike bridges, docks, quays, parking garages, dams, powerplants and a number of special application as well as industrialcleaning and clearance.Some time ago Waterjet carried out a rather unusual job onthe apron at Stockholm International Airport Arlanda. Here theyreplaced a 225 long concrete channel drainage for wastewaterPicture to the right showing the new Aquacutter Evolotion(left) and the Aquacutter Max Hybrid hydrodemolitionrobots shown at an international client meetingin Sweden earlier this year.Demanding Hydrodemolitionproject at Stockholm Arlandaand de-icing liquid. The channel had started to sink in to theapron and had to be replaced. Instead of putting in a new channelit was decided to replace it with a number of wastewaterwells. The channel was cast into the foundation and some 500mm in width and 200 mm in depth needed to be hydrodemolishedas well as demolished with demolition robots.Waterjet Entreprenad had two operators on the job, JanAxelsson and Jan Nordström and used Conjet Robot 363 STDand a Power Pack.Janne Axelsson told PDi that the job was far more complicatedthan expected due to the location of the channel and thatit was cast in the foundation. The area that was hydrodemolishedhad very strong reinforcement with a so called K value between60 to 80 K. The work was done in three steps starting in Juneand was finished in the end of August.“The job maybe didn’t look that complicated but the verystrong reinforcement made it very time consuming. When finishedA busy job site with aircrafts taxing off and on around the hydrodemolition robot, Conjet Robot 363 STD.Jan Axelsson (right) and Jan Nordström from WaterjetEntreprenad AB were responsible for the hydrodemolitionwork at Stockholm Airport Arlanda.The sides of the concrete channel after been hydrodemolished.the area also had to be very solid in order to be able to carry heavyloads like a Boeing 747,” says Waterjet’s Jan Axelsson.www.wjet.netHydrodemolition helpsCosta Rican bridgesmake the gradeThe Spanish hydrodemolition contractor Hidrodem has been usingits Swedish Aquajet Systems Aqua cutter robots to remove morethan 800m 3 of concrete to upgrade existing bridges for a majorhighway project in Costa Rica. The new 77.5 km San Jose – Calderahighway will be used by more than 81,000 vehicles/day, reducingthe travel time between the Central Valley and the Central PacificCoast by at least 30 minutes.It is the country’s first public construction project to be awardedto a foreign contractor by the Consejo Nacional de Concessions, partof the Ministero de Obras Publicas y Transportes. Spain’s Autopistasdel Sol will finance the project recouping its investment through tollcharges over 25 years. The new highway has been divided into40 PDi • Is s u e 4 - 2009 • Oc t - No v

Conjet assists in ChannelTunnel repairsTrain services through the Channel Tunnel linking Britain and France,where scheduled to be fully restored in February 2009 followingseveral months of repairs after a major fire in the tunnel on 11September 2008. A lorry caught fire on a Shuttle train carryingheavy goods vehicles bound for France through the 50km longnorthern tunnel. The fire, which spread to other vehicles, raged forabout 16 hours. The extreme temperatures of upto 1000ºC caused extensive damage to about600m of the 7.6m diameter tunnel’s concretelining, approximately 11km in from the Frenchentrance.Conjet supplied specially modifiedbanana shaped feedbeams, whichcarry the jetting nozzle, to matchthe curvature of the tunnel wall(right).Removal of firedamaged concreteThe Channel Tunnel operator Eurotunnelawarded the repair contract, estimated tobe between EUR 50-60M, to a consortiumof Freyssinet, Eurovia Travaux Ferroviairesand Vinci Energies. Freyssinet was appointed to look after the civilengineering works, while ETF would be responsible for track andoverhead wire restoration and Vinci Energies responsible for otherequipment. The technique of hydrodemolition, which uses highpressurewater jets to remove concrete from various structures,was specified as the method to remove the fire damaged concrete.Freyssinet subcontracted the concrete removal to the specialist hydrodemolitionand industrial cleaning contractor Philip Lasserat.For the hydrodemolition part of the repair Philippe Lassarathired four Conjet hydrodemolition Robots and pumps, togetherwith a team of experienced operators and a project manager, fromRotterdam based Doornbos Equipment, a specialist in the rental ofultra high-pressure water jetting and vacuum equipment. To meetthe tight schedule Doornbos had to work three shifts round the clockand opted to use two Conjet 364s and two Conjet 322s. Conjetsupplied specially modified banana shaped feedbeams, which carryThe total area of removal of the fire damaged concrete with the Conjet hydrodemolition Robots was about9,500 m 2 over an approximate 600m length of tunnel, including about 350 m 2 directly above the fire wherethe damage was most severe.the jetting nozzle, to match the curvature of the tunnel wall.Worked around theclock in three 10 h shifts“We had to remove the damaged C45 concrete just from the wallsand roof to a depth of 30mm and managed this at an average of650m 2 /day,” says Doornbos project manager Uwe Clausen. “Thetotal area was about 9,500m 2 over an approximate 600m lengthof tunnel, including about 350m 2 directly above the fire wherethe damage was most severe. We removed all the fire damagedconcrete in 14 working days using four Robots. We had to worknon-stop round the clock in three 10 hours shifts, which includedan hour in and an hour out at shift change to get through all thesecurity.” The Robots were supported by 350kW and 400kWpumps operating at pressures up to 1000bar and flow of up to240litres/min.After the removal of the damaged concrete Philippe Lassaratfollowed on repairing and replacing any fire damaged reinforcingprior to spraying on the new concrete lining. The various servicesand utilities were then replaced before handing the tunnel backto Eurotunnel to restart a full service of the Shuttle trains on 10February. Eurostar, the company that operates the passenger trainsrunning through the tunnel, anticipated services would be fullyrestored on 23 February.www.conjet.comthree main sections with two incorporating existing roads and numerousbridges required upgrading to meet the new regulations and increasedtraffic volume. Main contractor Constructora San José Caldera SArecognised the advantages of using hydrodemolition on at least 10bridges and appointed Hidrodem as sub contractor, using two AquajetSystems Aqua Cutter robots.All bridge slabs will be strengthened and increased in thickness toaccept the increased traffic densities. The Aquajet Cutter robots came intotheir own on the concrete slab improvements and reinforcement, removingmore than 800 m 2 of concrete to an average depth of 100 mm. Onthe Rio Jesus Maria Bridge Hidrodem found that the concrete slab wasbelow the minimum standard thickness of 150 mm. Hidrodem was ableto use the Aquajet robots with confidence to remove the concrete withoutdamaging the rebar, allowing concrete to be poured to a new standardthickness of 170mm. This together with the increased rebar provided atotal thickness of 220mm to meet the new standard.By using a high-pressure jet of water, the Aqua Cutter robotremoves concrete without causing any damage to the structure orreinforcement bars. Each robot is fed by two water pumps, rated at550 hp and 700 hp respectively and delivering 196 - 227 l/min ata pressure of 1000 bar. According to the spokesman for Hidrodem,the key factor was the ability to meet the tight schedule on each of thebridge structures in such a short time, whilst at the same time allowingthe highway to remain open.Is s u e 4 - 2009 • Oc t - No v • PDi 41

Swedish dam relies on hydrodemolitiontechniques during refurbishmentHydrodemolition techniques are being used for therefurbishment of Sweden’s Järpströmmen hydroelectricpower station dam wall and three spillway gatesusing Aquajet’s Aqua Cutter robotic hydrodemolitionequipment.Swedish hydrodemolition specialist E-Schaktis working on the refurbishment contract, 80 kmwest of Östersund, mid-Sweden; to meet increasedwater volumes.Power station operator Fortum has awarded a twoyear contract to Skanska for the complete refurbishmentof the dam. The power station was built in 1944and has three 118 MW turbines providing 415 GWh/year of electricity for the national grid.E-Schakt was awarded a sub-contract for thehydrodemolition removal of damaged concrete. Afterremoval Skanska will then replace the treated areaswith new concrete.Hydrodemolition ensures rebar is not damage,minimises risk of removing good concrete, eliminatesdust and crystalline silica pollution and leaves asuperior bonding surface for new concrete. It is alsosubstantially faster than mechanical removing methodsand is also considerably less labour intensive.E-Schakt is using hydrodemolition equipmentfrom Sweden’s Aquajet Systems and includes anHVD Evolution Aqua Cutter robot, an Aqua Framefor underwater operations and a PP-700 Ecosilencepower pack.The concrete dam has a maximum height of 14m and a 2.5 m wide top slab and 6 m wide base.In the first phase E-Schakt has removed a 500 mmdepth of concrete from the top slab and 200mmfrom the dam face.During the second phase, E-Schakt will remove5.5 m of concrete on the vertical part of the upstreamside of the dam to a depth of 200 mm; includingat least 1 m underwater. For this operation, theThe Aqua Frame on the inclined damabutment.Aqua Frame robot will be positioned on the verticalupstream dam wall and secured by divers. Workingwith Skanska divers, E-Schakt’s operator can continuethe under water hydrodemolition operation remotelyfrom above the surface.Järpströmmen has three steel spillwaygates, and each will be removed in turn to allowhydrodemolition repairs to each gate’s concretesupports. In total, 439 m 3 ofconcrete will be removedfrom the three spillwaysand more than 162 m 3 ofconcrete from the dam.www.aquajet.seVertical removal.Evolution robot removinga trianglepart of the crackedconcreteHydrodemolition is our passion and we arecommitted to being the best in the business!OverheadVerticalAroundHorizontalAQUAJET SYSTEMS, thinking insystems, with 25 years experience andconstant improvement together withour customers, we provide you witha modular design in advanced Hydrodemolitionthat covers almost any kind of application.AQUAJET SYSTEMS stand for efficiency,profitable solutions and the latest innovations.Visit www.aquajet.se for more information.42 PDi • Is s u e 4 - 2009 • Oc t - No v

SAIE Down butStill StandingIt is difficult fororganizers ofconstruction machineryequipment showsin these difficult times.SAIE 2009 in Italy inOctober was a majordisappointment thisyear as a result of aweak market and acollision with othershows in the samebusiness segment.The Italian show SAIE in Bologna did not meet expectationsthis year. The normally vibrant exhibitionwas devoid of many of the major manufacturers ofdemolition and recycling equipment.Show collisionJust a handful of manufacturers of demolition andrecycling equipment that exhibited at previous SAIEshows attended this year. The recession has hit theItalian market hard and is one of the main reasonsfor the decline in exhibitors at SAIE. Another reasonis the rather unlucky planning of having threesimilar shows so close together. SAIE was heldon 28-31 October and coincided with the wastemanagement and recycling show Ecomondo inRimini, about an hour drive from Bologna. Severalof the Italian companies that used to exhibitat SAIE choose Ecomondo instead. NormallySAIE use to be organized second week of October. OnIs s u e 4 - 2009 • Oc t - No v • PDi 43

PDi’s Monica Colleone and RomanoFerrario (middle) together with Klindex’sEnio Bibiano.Romano in the jaws of a Trevi Bennecrusher.top of that the German waste management and recyclingshow Entsorga was held on 27-30 October, which probablystole some of the international guests at SAIE.Positive commentsDuring the four-day exhibition 166,426visitors and 1,530 exhibitors, including320 from abroad, attended the show.The number of visitors was a little lowerthan previous shows, but exhibitors weredown by about 200.Among the major manufacturersTrevi Benne displayed a representativerange of their heavy-duty demolitionand recycling attachments, including,crushers, pulverisers, shears, sortinggrabs and crushing buckets.Rotair displayed their of hydraulicbreakers and dumpers for easy loadingat the demolition sites.Tower Light was showing theirline of light towers as the companydecided to display their line of dust suppression canonsNew dust extractors from Klindex.at Ecomondo instead.The Italian company Pressoil, specialising in hydraulicand remote control systems, showed a new brand of remotelycontrolled demolition robots. The company tailormake remotely controlled equipment for any company ormini excavator manufacturer. The machine on show wasoriginally a Bobcat converted to a demolition robot withoutany cabin. Pressoil received a lot of enquiries aboutthis product. The company says that mini excavators arebecoming more and more common in demolition applicationsand with a remote control as an option the use can beextended. Pressoil is also installing remote control systemson heavy duty and long reach demolition excavators.The Italian company Klindex displayed some of itsfloor grinding and polishing equipment. Klindex has awide range of equipment and also manufacturers industrialcleaning machines, industrial vacuums and tools.Klindex has recently launched a new system for polishingconcrete floors called Super Concrete Floor System,a new concrete floor grinder named Hercules 530 with500 mm grinding width, the large scale grinder Expander1000 with 1m grinding width and the new dust extractorSupervak KY100 and Supervak KY76 Bag. A number ofnew grinding and polishing tools have also been releasedduring the year.Klindex has a very comprehensive range of concretefloor polishing equipment and the company says that thereis considerable interest in these products, especially in theUS where they are sold through its own subsidiary.No far from Klindex was another distributor of floorgrinding equipment, SK Professional promoting BlastracDiamatic and Pullman Ermator.Other companies that always exhibit at SAIE are thehydrodemolition manufacturers Conjet, Aquajet andThe new Robot 324 fromConjet.44 PDi • Is s u e 4 - 2009 • Oc t - No v

WALLSAWING-SYSTEMSTHE RIGHT PRODUCT FOREACH APPLICATIONMachine and diamond tools one-stopElectric and hydraulic versionsModular system componentsA Company within the SWAROVSKI Group

PTS Waterjet. A special featureabout hydrodemolition equipmentis on pages 36-42 in thisissue of PDi.The Italian distributor Ariko,which specialises in distributingdemolition, recycling and excavatingtools, also had a wide ofattachments on show, as did theIrish manufacturer Dromone.Crushing bucket from Trevi Benne.Crushing bucket from Simex.Account Manager Patrick Briody fromIrish manufacturer Dromone.Satisfied exhibitorsMost exhibitors were satisfied withthe show even though it was quieterthan previous SAIE exhibitions.“Even in this critical time for themarket, there was great attentionand interest in new technologiesfor the innovative use of energy,”says Mitsubishi Electric Fotovoltaicodivision manager GualtieroSeva. “We made many contactsRemote controlled demolition excvatorfrom Bobcat with support fromPressoil.in this field, showing that the integration ofarchitecture and technologies to achieve energyefficiency is becoming increasingly importantin the building industry.”“I am totally satisfied,” adds Nicola DeCarlo of De Carlo Infissi. “Because I believethat SAIE is the main reference point for buildingthanks to the materials and technologiespresented and to the way frames are consideredan integral part of the process. In my opinion,our company was successfully put in touch withthe industry in which we operate.”“I am also satisfied by the results ofSAIE 2009,” says Gruppo Saint GobainItalia president Gianni Scotti. “I believe inthis exhibition so much that we have a stand at bothSAIEnergia and at SAIE. It is an absolute referencepoint, offering a complete and innovative approach tobuilding and energy efficiency, even in sectors like glasswalls, which have been missing from trade exhibitionsfor some time.”Pillar robot from Aquajet Systems.Breakers in the Rotair booth at SAIE.46 PDi • Is s u e 4 - 2009 • Oc t - No v

A New PowerfulDrilling SolutionHusqvarna’s new strong DM 340 drill motor mounted ona DS 450 stand is a complete drilling system easy toset up, operate and transport. The DM 340 is the mostpowerful electric drill motor in Husqvarna’s range. It hasan ergonomically designed handle, making it easier totransport and faster to set up. The controls are designedand positioned to enhance its ergonomics and facilitateoperation and only weighs 14 kg.Its technical features include Softstart, whichassures a smooth start, andSmartstart, which makes iteasier to initiate drilling. TheElgard function significantlyincreases its operating life by protecting the motorfrom overload. The LED indicators show themachine load and help the operator drill withmaximum efficiency at all times. The gearboxis water-cooled for reduced wear and thethree speeds make it easy to set the optimumdrilling speed.The DM 340 can be used for drill bits withdiameters from 50 to 400 mm. The DS 450is a rugged, lightweight stand that can beangled, and has been designed specificallyfor this drill motor. The two-speed carriageallows the selecting of the speed tomaximise the drilling performance. Thestand is available in two variants witha long or short column.Stand accessories such aswheels and vacuum plate areavailable to facilitate transportand mounting. “The DM340 with the newly developedDS 450 standoffers a really efficientand powerful drilling solution.The system is extremely easyto assemble and handle and saves timefor users before and during work,” says HusqvarnaConstruction Products construction equipment product managerLars Gustafsson.www.husqvarnacp.comTechnical data forthe Husqvarna DM 340• Water-cooled three-speed gearboxfor optimal drilling performance• Equipped with SoftstartTM,SmartstartTM and ElgardTM as wellas an LED overload indicator• Water hose can be turned 180 degrees• Power: 3300 W• Drill-bit diameter, max: 400 mm• Weight: 14 kgTechnical data forthe Husqvarna DS 450• Drill-bit diameter: max. 450 mm• Travel length: short = 635 mm,long = 1635 mm• Weight: short = 23 kg, long = 30 kg• Eight control wheels forcorrect placement of the carriageand stable drillingPowerful, user-friendly and efficient.Husqvarna’s new strongDM 340 drill motor mounted ona DS 450 stand is a completedrilling system developed withmaximum user focus.The DS 450 is availablewith a long or short column.Wheels and vacuum platefacilitate transport andmounting.48 PDi • Is s u e 4 - 2009 • Oc t - No v

New Hydraulic ClampRange for Bobcat MiniExcavatorsBobcat has launched a new family of dipper stickmounted hydraulic clamp attachments for the company’srange of 1 to 6 t mini-excavators. Exclusive toBobcat, the new hydraulic clamps are available in longand short versions to fit Bobcat buckets mounted onexcavators with Pin-on,Klac or Lehnhoff attachmentsystems.The clamps aredesigned for any applicationinvolving pickingand placing of objectswith Bobcat mini-excavators. When used with atrenching bucket, the hydraulic clamp functions likea human thumb, allowing the operator to grasp, liftand place broken concrete and asphalt, treestumps, stone blocks and other objects.Hydraulic clamps provide operational advantagesin demolition and road repair for pickingup debris and loading into waiting trucks andtrailers. They are also useful in landscapeconstruction for clean up operations or theplacement of boulders and stones. Availablein a wide range of sizes with operating weightsfrom 27 to 115 kg, the new clamp attachments arepainted orange to improve visibility when in use. Theclamps do not need to be dismounted, and coupledwith increased versatility and utilisation, ensures theyare an added value attachment particularly for therental industry.The hydraulic clamps are supplied in kit formand comprise a grapple for clamping, a hydrauliccylinder, hoses and pins required to install the clampon the excavator.www.bobcat.comJCB launchessmallest compactLoadallJCB has launched its smallest compact Loadall telescopichandler the 515-40 Miniscopic, which is just1.8m high, 2.97m long and weighs less than 3.5 t.It features a patented offset, single-spine chassis withthe machine’s cab occupying the resulting space.The Miniscopic hasbeen designed for manoeuvrabilityin the restrictedspaces and difficult groundconditions and features4-wheel drive, 4-wheel steeringand a hydrostatic transmission.Pow- ered by a 50hp Deutz engine,the JCB model can handle a 1.5t payload at a 4mlift height. It can be specified with a compact Loadallor skid steer Quickhitch, to cater for a vast range ofcompatible attachments.The JCB Miniscopic is ideally suited to applicationswhere the working area is restricted and canaccess areas traditional alternatives cannot, includingthe ability to operate inside buildings and containersor to be lifted above ground level for work in highrisestructures.www.jcb.comOscillation breakthroughquadruplesdust suppression areaOne of the world leaders in dust suppression equipment,Dust Control Technology, has introduced a180° oscillation option on its two largest designsand quadrupling the coverage area of eachmachine. DCT is now able to deliver effectiveparticle control over more than7,400m 2 from a single location withits flagship model, the DustBossDB-60. “These new optionsmean that customers can suppress dustand odour particles over a far greater areawithout having to move the equipment,” saidDCT president Edwin Peterson. “That contributesto even greater payback, either by reducing thenumber of machines needed for a given job oravoiding the need to relocate the DustBoss to coveradditional areas.”When equipped with the expanded oscillationoption, the revised designs require that engineerschange to a centre water feed to accommodatethe increased range of motion. They also install alarger motor on the DB-60 or DustBoss DB-45, tohandle the additional work. The machines will havefour different settings, and users can select from 45°,90°, 135° or 180° options to suit the specific jobrequirements on any given day. The DB-60 has 30special nozzles to atomize water into droplets of50-200 microns at nearly 850m 3 /min and throw ofmore than 60 m. The portable, carriage-mountedhas an adjustable throw angle from 0-50° elevation.An optional booster pump increases water pressurein the DB-60 for outstanding particlesuppression.The oscillating DB-45 candeliver a virtual dust barrier that coversmore than 3,700m 2 . With its 11.2Kw fan, the DB-45 generates andairflow of 510m 3 /min to maximizecoverage and particle capture. Likethe more powerful DB-60, the design alsofeatures adjustable elevation from 0-50°.www.dustboss.com50 PDi • Is s u e 4 - 2009 • Oc t - No v

Grand scale wiresawing in ViennaThe hall of the listedrailway station West inAustria’s capital Viennais to be refurbishedand extended at bothsides with two newmulti-storey buildingsand a new subterraneanlevel underneaththe extended complex.Completion of Austria’sfirst Bahnhof City isscheduled for autumn2011 providing trafficlinks, shopping centre,offices and a hotel.52 PDi • Is s u e 4 - 2009 • Oc t - No vTo reach that goal, the former railway station was closed in September2008 to make a start on the comprehensive extension.EDT Eurodima was constantly on site providing continuous supportfor the concrete specialist consortium Dimas Betonbohr- u.-sägedienst Ges.m.b.H. and GWA Michalko GmbH, two of thebiggest Austrian concrete drilling and cutting contractors. As thestation hall is a listed building, the contractors had to stick to thespecial building regulations set by the state office for historicalmonuments Bundesdenkmalamt.Double shiftsDimas/GWA removed about 1,300 m 3 of concrete by wiresawing and carried out about 1,500 m of core drilling for wiresawing preparation. The main demolition was done within a 4month period and with a tight programme Dimas/GWA oftenworked night and weekend shifts.Wire sawing most efficientThe most intensive task was the wire sawing, which was donewith EDT Eurodima wire saws. The concrete blocks that hadto be removed from the existing building could be cut withwire saws being the most efficient method for this project.The wire saws do not have to be reset and refitted as oftenas wall saws. With wire saws, all cuts, be they horizontal,vertical, floor, ceiling, mitre, diagonal or flush, can be donewith smallest amount of positioning and operating work,using the appropriate guidance systems.The EDT Eurodima electro-pneumatic drive provideslow weight and connecting loads, highest electricefficiency, low-noise and smooth operation as well aslow tool wear. The wire saw power unit provides highoperational safety for operatives. And in addition thewire is guided through tubes.In this project, four EDT Eurodima wire sawsWB12S with drive units WB12SMS and 500 mdiamond wire, type DS40FBLUE, were used. The wire qualitywas constantly tested, adapted and customised to the concretecharacteristics by EDT Eurodima. The high-quality diamondwire is coated with flexible rubber composites to provide a comfortablecutting process.Satisfied customerThe drill bits that Dimas/GWA used were tipped with the newDuramant® segments and fixed with the space welding technique.The Duramant segments combine a sophisticated bonding techniquewith high-class diamonds and shape so sharpening is notnecessary and users get superior tool life and faster drilling. Spacewelding, originating from the automotive industry, has been usedfor the production of concrete drilling tools for the first time andapproximately 180 type DUK50 drill bits were used successfullyin the Vienna project.www.eurodima.com

axx ® wire sawing is the smooth way to get the job done.Rsystemwww.eurodima.comWELCOME TOOUR KIND OF PLAYGROUNDOUR KIND OF PLAYGROUND is often a verydangerous environment and there are no goodarguments for exposing you or your staff to fallingdebris or dangerous vibrations.Our demolition machines are radio controlledand electrically driven so that you are not exposedto dangerous fumes. Another thing whichmakes the machines even better is that you candemolish up to 5 times quicker than traditionalsawing and cutting methods. Time is, as we allknow money!Visit www.brokk.com orcontact your local dealerfor more information!Brokk AB | PO Box 730 | SE-931 27 Skellefteå | SWEDEN | Tel +46 910 711 800 | Fax +46 910 711 811 | www.brokk.com | info@brokk.com2 0 1 0Mark your calendar with 9-10 September, 2010Infra City Stockholm, SwedenStay updated at www.demcon.se

Morgan Est appointsD-Drill for live substationcable removalSafety was top of the agenda for UK basedD-Drill (Master Drillers) Limited when theyworked within a live substation in Liverpool.Contractor Morgan Est appointed thediamond drilling and sawing specialist toremove a high voltage reinforced concretehigh level cable gantry using a HydrostressWiresaw.The major substation remained online,during the two day project, while the concretesections were cut and removed froma height of 10 m. “Due to the weight andlocation of the gantry it was not possible touse high reach crunching excavators as thiswould have posed a risk to adjacent transformersand local electrical apparatus,” saysD-Drill north west area manager Neil Wood.“D-Drill was appointed because of its abilityto provide a highly controlled wire sawingoperation, at height, with fully trained BESCoperatives. The positioning also meant thatall equipment and the concrete waste hadto be transported through live sections ofthe works.”D-Drill bites into concretebiscuit at chocolate factoryIn the UK and on the fourth floor of a chocolatefactory in Chester, D-Drill (Master Drillers) Limitedgot to work cutting out concrete sections for contractorsBarry Callebaut Manufacturing UK Ltd.The job consisted of four 1850mm diameterx 275mm deep heavily reinforced concrete biscuitshaped sections, each weighing slightly morethan the average chocolate treat at 1.65 t.Callebaut appointed the diamond drillingand sawing specialist because of the difficultaccess and control issues that are faced whendealing with food production line areas. “Theteam dismissed breaking out by mechanicalmeans because of the obvious dust and debristhat would result from this method,” says D-DrillNorth West Area Manager, Neil Wood. “Withaccess via a staircase plus demanding liftingcapacities, a small goods hoist was also notadvised. Our solution was to erect a suitablecrash deck below the works area, which wasthen tented and bounded off to contain anywater ingress below. All our equipment washoisted to the works floor 40 m from the groundand reassembled in place. Openings into theconcrete were created by ‘stitch cutting’ using aZhorro Plunge saw then lowered down to groundlevel for removal.”www.d-drill.co.ukFacts about D-DrillD-Drill has grown year-on-year since its inception. In addition to the nine regional offices, thecompany also has its own engineering department which manufactures drills, blades andequipment (under White Diamond Products Ltd, an operating division.) This enables D-Drill tocontain its costs, and therefore keep its charges competitive. In addition, a specialist surfacepreparation division called Superfloor expands the company, offering surface preparation fromshotblasting and scarifying to diamond grinding and concrete polishing.Continuing with a ‘one stop shop’ service D-Drill also introduced a sub-contracting serviceby diversifying into demolition with the acquisition of MBC Specialist Services. MBC providesa complementary service to D-Drill’s core diamond drilling and sawing service. Through MBC,D-Drill introduced the use of Brokk remote demolition machinery, an important step-change inits already rigorous health and safety policies.Wire sawing on O2 DomeIn the UK Robore Cuts, the London based ConcreteCutting Contractor, took on a large wire sawing job onthe O2 Arena site, previously known as the MileniumDome. Three 4 x 4 m blocks had been installed,when the Dome was built to take a Television Screen.Now, with new buildings planned on the site, theyneeded to be removed and Robore Cuts with its wiresawing expertise was called on to do the job.Hard goingThis job was never going to be easy, with 8 t of steelreinforcing in each block and flint aggregate makingup the concrete. These conditions, along with the sizeof the cut, made for a very challenging job.AERO® PRO diamond wireRobore took different 20 m lengths of wire to the job,including Diaquip’s AERO® PRO sintered diamondwire. This soon proved to be the operator’s choiceafter some testing, due to its speed and wire life.Project completedRobore Cuts and the client were very happy with theprogress on the O2 project. Each cut took only 6hours and the blocks were removed prior to startingconstruction of the new buildings.54 PDi • Is s u e 4 - 2009 • Oc t - No v

New floor saw blades from Norton-NimbusWith a focus on increasing the speed of cut,the engineers at Norton have developed an innovativedesign for their new premium range offloor sawing blades for cured concrete. The newVortex design is a combination of a differentiatedsegment design, innovative gullets and a widerrange of bond specifications.• Concave top ensuring a quick penetrationby self-sharpening.• Shorter top section to accelerate the speedof cut by reducing the peripheral contact surface• Inclined front section for a smoother angle ofattack to improve the comfort of cut. Angles ofthe segment and the gullet are aligned for amore efficient evacuation of the slurries.• 15 mm tall segments for a significantlyincreased life.• Norton patented ellipsoidal gullets toreduce risk of steel cracks.• Norton patented arrow shape gullets toindicate the direction of rotation.• Additional air holes to improve bladeventilation and cooling down of the segment.• Multi-depth gullets to improve the transferof water in a wider area throughout the cutand a more efficient evacuation of the slurries.Dry cutting dilations joints forasphalt highwaysTo reduce cracks in asphalt pavements, Frenchcivil engineers have used an unusual techniquedeveloped in the mid 1970s for concrete pavements.They decided to cut a dilation joint in thesub-base layer, in a similar procedure on greenconcrete. The sub layer is composed of mixedgravels, sand and lime, and must be cut dry. Thecut is then air cleaned and filled with tar. A secondlayer of the same aggregate and a final layerof asphalt complete the construction ofthis two-lane highway.The company Travodiam wasawarded the sawing operation andin addition to testing this new techniqueand the unknown in bladebehaviour and consumption, theyhad also to comply with the veryfast pace of construction.The new Norton-Nimbus Platinum30 asphalt blade was usedon this job with speed of cut of 11m/min anda cost/linear m 15% below the initial guarantee.The new innovative gullet shape on the Platinumblade significantly reduces the wear to thesteel core. On this dry cutting job the gulletwas especially efficient in removing theslurry from the cut and keeping the coretemperature down.Is s u e 4 - 2009 • Oc t - No v • PDi 55

Record time demolitionof famous Mumbaiflyover by Atlas CopcoCombiCuttersIn the Indian capital Mumbai the two lane Lalbaug flyover,which carries 15,000 vehicles an hour, had become verycongested and had to be demolished to make way for a new2.1km long structure. The state government allowed only25 days for the entire demolition works and clearance ofdebris, but only 10 days for the basic demolition.Contractor Simplex Infrastructure Ltd sub-contractedthe demanding demolition to Matte & Associates, whichopted to use its Atlas Copco silent demolition tools. Thecompany used its two existing CC 1700 U CombiCuttersand a new CC 2500 U, bought specifically for the Lalbaugproject. Railings and parapets were crushed by the CC 1700Us above the flyover and the main girders removed by theCC 2500 U. At the end of the first day almost a quarter ofthe entire volume of 5,000m 3 had been removed and bythe sixth day the entire job had been completed, four daysahead of schedule.www.atlascopco.comAround-the-clock dust controlin Brooklyn, New YorkIn the US an innovative transfer station in Brooklyn, New York hasbeen using a high-efficiency dust suppression system, creatinga virtual dust blanket over the entire tipping area where around1,300 t of construction and demolition debris is processed everyday. Cooper Tank Transfer mounted the oscillating unit about 6moff the ground, to obtain maximum reach and coverage. Thesystem has been running 24 hours a day, six days a week for overa year, delivering effective dust management to protect workers,commercial neighbours and the surrounding environment.“In our operations, huge quantities of dust can be releasedin just a few seconds when trucks are dumping or front loadersare transporting material,” said Cooper Tank Transfer generalmanager Ray Kvedaras. “We wanted to find a technique thatwould address the problem in the immediate area, right as itwas occurring.”To accomplish that goal, the company bought a DustBossDB-30, the smallest in a family of high-performance suppression56 PDi • Is s u e 4 - 2009 • Oc t - No vequipment from Dust Control Technology. The versatile unit hasa ring of brass nozzles that atomize the water supply to dropletsbetween 50 and 200 microns for maximum particle attraction.A ducted fan has an adjustable throw angle from 0-50° elevationand oscillates up to 70°. With a throw of up to 30m fromground level, it delivers coverage of more than 460m 2 using just astandard garden hose. “It doesn’t soak the conveyor or debris pilethe way manual spraying does,” adds Kvedaras. “Too much watercan cause the screens to block up with a mucky residue, whichcomplicates processing and increases maintenance.”Because it is compact, the DB-30 can be an effective optionfor indoor locations or confined spaces. The machine comes witha pre-filter with quick cam release for easy access, and it can beset up to run potable or non-potable water. Options include singlephase or international motors, carriage mount for easy mobilityand a dosing pump for odour control or other additives.www.dustboss.com

Downwell Demolition bringsflyover down to earthThe UK demolition contractor Downwell Demolition has recentlycompleted a six week project demolishing the Sir John Hawkinsflyover in Chatham. Kent. The flyover’s demolition is part of a majorredevelopment of the town centre, which includes the building of anew bus station and expansion of the Pentagon shopping centre. Fordecades the 130 m long concrete bridge had stood uncomfortablybetween Chatham’s shops and houses. The flyover consisted ofeight spans and support pillars up to 6m high.Downwell Demolition initially secured the site and then removedthe central span of the bridge, which ran above Chatham’s HighStreet. This involved the temporary closure of the main roadwhilst specialist machinery demolished the span and removed allconcrete and steel arisings. To minimise inconvenience to localresidents and workers this part of the project was completed overa single weekend.With the central span safely demolished, and the High Streetreopened, the remaining five spans and their associated supportingcolumns were then demolished and removed. Throughout theproject, all demolition and crushing work was subject to waterbased dust suppression and undertaken at pre-determined timesto minimise disruption to the local community. Material arisingswere segregated with the concrete crushed on site and the steelrebar removed for recycling. A controlled crossing point ensuredplant machinery crossing the main road did so without risk tothe public.www.downwelldemo.co.ukFacts about Downwell DemolitionDownwell Demolition is one of the UK's leading demolition and recyclingspecialists. The company prides itself on offering safe, cost effective solutionsfor all demolition undertakings including asbestos removal, crushingand screening, facade retention, internal strip outs and site remediation. Thecompany's offices and plant yard are based in South Godstone, Surrey.Know-How and CapacityAt its Best!WATERJET ENTREPRENAD AB is the largest Hydrodemolition contractor in the northof Europe with more then 20 years of experienceSpecialists in: Know-How and Capacity www.wjet.netREGION EAST REGION WEST REGION NORTH Is s u e 4 - 2009 • Oc t - No v • PDi 57

Brokk brings dowBrokk 400 remotelyoperated demolitionrobots have been playinga key role assistingat one of Scandinavia’slargest demolitionprojects. The majorNorwegian demolitioncontractor Veolia MiljøEntreprenør is using theBrokks at Ahus Universityhospital in theNorwegian capital Oslo.The Ahus University Hospital demolition projectinvolved the demolition of the low and high blocks, intwo separate contracts worth a total of NOK 75 million.Veolia Miljø Entreprenør won both contracts and beganwork in autumn 2008.Nine building to come downThe low blocks consisted of six consecutive buildingsfrom two to eight floors, covering a total of 22,000 m 2 offloor area for high demolition. The taller blocks consistedof three buildings of 12-13 floors and floor area of 18,000m 2 . When Veolia has finished the demolition the serviceand processing functions are going to be rebuilt next tothe new hospital, which opened in spring 2008. “We havedemolished 50,000 tonnes of material and recycled 99%.We are very pleased,” says Veolia Miljø site and projectmanager Rune Andersen.Quite and most efficientThe second part of the project is the demolition of the43m tall blocks, which started in May 2009 and is scheduledfor completion in January 2010. The high blocksinclude a total of about 16,000 t of reinforced concrete.“The high blocks are a bit more demanding since there arethree continuous high buildings that have to be removed.Under the floors to be demolished are culverts, laundryand kitchen that is fully operational,” says Veolia Miljømanager Bjørn Bjelde.Work has been progressingwell and the quietest and most efficientmethod for the high demolitionis the Brokk in combinationwith concrete crusher and VeoliaMiljø bought two new Brokk 400sfor the project.It takes approximately 10-12days for Veolia Miljø to demolish a1500 m 2 floor, including the facade,Picture below from the left: Knut Bergensen,Espen Erlien, Anders Johnsson,Urban Lindholm, bakom står MarkoLeveilä.The Brokk machines are working silence and effective on top of thekitchen still in operation.58 PDi • Is s u e 4 - 2009 • Oc t - No v

n hospital in Oslocorridor walls, elevator and stair shafts. All demolitiondebris are picked up with a mini loader and tipped intoa chute down an elevator shaft. Counted on days, theydiscard about 500 tonnes of concrete masses each week. Tohandle the Brokk floor loading capacity and the demolitiondebris they have propped two floors below. “It is greatto demolish with the Brokks and have three machines inoperation, two Brokk 400s and one Brokk 90, which takesbrick walls,” says Brokk operator Anders Johnson.The design of the new Ahus Hospital inOslo is very modern.buildning. Below the buildning you can find culverts, laundry andAnders Johnson, a professional swedish Brokkoperator who has moved to Oslo to work forVeolia MiljøAbove Bjørn Bjelde Veolia Miljø, Manager(left) and Rune Andersen, ProjectManager.Below Knut Bergensen, Husqvarna Norwayand Tommy Hällgren, Brokk AB.Is s u e 4 - 2009 • Oc t - No v • PDi 59

“Institute GoesThe Institute of DemolitionEngineersrecently hosted thelatest of its industryseminars; and it wasa truly internationalaffair, PDi’s Mark Anthonyreports.It’s a little over two years since Terry Quarmby, then the vicepresidentof the Institute of Demolition Engineers, stood beforethe European Demolition Association members in Bilbao toinvite them to apply for IDE membership. Membership,claimed Quarmby at the time, was the only internationallyrecognised accreditation and qualification open to true demolitionengineers.Growing ReputationSince then, the international response has been one of almostdeafening silence. Save for a handful of memberships in theUS, Australia and elsewhere in Europe, the IDE seems to havebeen consigned to a parochial backwater, damned for all eternityas too British for international tastes.What a difference two years and a new president and vicepresidentcan make. When vice president John WoodwardA chilling outlook from Peter Jones.Below Alex Albon spoke about thesubject Earth Exchanges.Earth ExchangeWith the profitability of demolition works increasingly hingedupon the ability to sell bricks, concrete and other arisings, a presentationby Earth Exchange’s operations director Alex Albon wastimely. Earth Exchange is, perhaps, best described as an onlinedating agency that matches the needs of construction companieswith the products available from demolition companies.The primary aim of Earth Exchange (www.earthexchange.com) is to ensure that potentially valuable materials that mighthave been sent to landfill in the past are made readily available forreuse. “Not only are we preventing the loss of valuable materispoketo the EDA in Nice earlier this year, he openly admittedthat the IDE had been “stupid” to expect a flood of entrants fromEurope as the IDE had quite simply made things too difficultfor non-English speakers and non-UK residents. Judging bythe latest IDE seminar, which took place within the shadowof the UK’s world famous Houses of Parliament, Woodward’swords had been backed by action.Growing ReputationAlthough an EDA representative was forced to pull out at the lastmoment, approximately half of the event’s high-profile speakershad flown in from overseas to attend, a fact that underlines theInstitute’s growing stature and reputation beyond UK shores.The first speaker, Peter Jones of Peter Jones Associates,was also the most chilling. Jones took the opportunity to offerhis own alternative viewpoint on the issue surrounding blownfoam panels containing CFC and HCFC Ozone DepletingSubstances as covered by the 1987 Montreal Protocol. And itmade for extremely bleak listening.According to Jones, the sheer volume of these materialspresent in UK commercial buildings and their potential harmto the Earth’s Ozone layer will make the refrigerator mountainproblem of a few years ago look like a mere environmentalmolehill.In the UK, there are moves to ensure that any such panels60 PDi • Is s u e 4 - 2009 • Oc t - No vThe audience enjoyed the international falvour.removed during the demolition process are handled properlyand processed through a refrigerator plant to ensure that theharmful gases contained within them are not allowed to enterthe atmosphere. Jones also reported that further studies aretaking place in countries across Europe. Such action is vital,Jones asserts, since he is anticipating a peak in the level of theseproducts entering the demolition arena to be just a few short yearsaway. An audio podcast of Peter Jones’ presentation is availableat: http://tinyurl.com/ydlflruLess contentious, but no less fascinating, was a presentationby Rainer Cremer whose company, Mende Holding GmbH,specialises in the construction, maintenance and subsequent demolitionof high-rise chimneys. Often working at great heights,Mende has developed a unique system of deconstruction usinga “spider-mounted” mini excavator equipped with a hydraulichammer that gradually eats away the chimney from the topdown. Cremer reports that his company’s process ensures thatall debris falls into the chimney, facilitating easier clean-up andrecycling and ensuring that dust emissions are minimised. Avideo showing the operation in progress can be viewed at: http://tinyurl.com/lxr4bt

International”Dick Green talked of spiders, scorpionsand snakes.als and safeguarding landfill space, our system also uses thevery latest online mapping systems to match demolition andconstruction companies by geographic location, minimisingtransport and the resulting impact on the environment,” saysAlbon. “Feedback from demolition companies also suggeststhat they welcome the opportunity to find local outlets fortheir waste arisings when, perhaps, they’re working a long wayfrom their usual base and customers.”A video of Alex Albon’s presentation can be viewed at:http://tinyurl.com/yd4shp8Bigger and BetterAlthough given by a Dutchman and a German from twototally unconnected companies, the next two presentationscould quite easily have been presented as a double act, sinceRuud Schreijer of Rusch and Arne Marx of Genesis havecertainly enjoyed some synergies recently.Schreijer, the man behind the creation of the world’slargest high reach demolition excavator, gave a fascinatinginsight into the engineering expertise required to take a 110 tCaterpillar 5110 excavator and turn it into a 220 t behemothwith an upward reach of 90 m and capable of wielding a 5 tGenesis attachment. An audio interview with Ruud Schreijeris available at: http://tinyurl.com/ydc33vyGiven the 90 m giant’s use of a Genesis attachment,and the fact that Rusch and Genesis have worked together todevelop an excavator specifically for decommissioning Norwegianoil rigs, it was fitting that the attachment manufacturer’sArne Marx should be next on his feet.In a rare insight, Marx revealed that the development ofa new 25 t shear for a Norwegian customer was just the tipof the iceberg, and that far larger models were already underdevelopment. Although they could be a year or more away,these new models could weigh in excess of 50 t and will requirea truly huge carrier to support them.The final presentation of the day was by ControlledDemolition’s Dick Green who maintained the internationalflavour by sharing his story of the explosive demolition of apower station chimney in India. Green told the audience howhe and his team of Indian nationals had been forced to contendwith monsoons, scorpions, spiders, poisonous snakes, bambooscaffolding lashed together with poisonous snakes and terrorists.It was a thoroughly entertaining and appropriately internationalway to end the day.www.demolitionengineers.netThe IDE President Terry Quarmby (right) and Vice PresidentJohn Woodward.Ruud Schreijer - The man who createda monster.Is s u e 4 - 2009 • Oc t - No v • PDi 61

Down and recyclFor more than 40years the CentralPlant facility inCalifornia’s capitalcity of Sacramentowas responsiblefor heating andcooling more than511,000m 2 of stateowned,downtownoffice space. Howeverin only a month,Stockton, Californiabased contractorW.C. Maloney demolishedthe 3,400m 2Central Plant andrecycled 94% of thematerials.Text & Photo: Erik PisorInitial demolition work involved the removal of the plant’seast elevation and non-load bearing curtain wall by a LinkBelt 330 excavator, equipped with a bucket and thumb, anda Liebherr 934 Excavator with Genesis Shear. This workallowed the excavators access to the facility’s control room,where six large chillers were salvaged, two large boilers weredemolished in place, and electrical switchgear and motorswere removed.Complex city centre demolitionBecause downtown streets bounded the facility, specific truckroutes were required when hauling away large chillers andconstruction debris during the day. Additionally, to avoidtraffic delays the loading and unloading of heavy constructionequipment occurred at night.Working in a downtown environment also meant contractorcompliance with dust control requirements, whichwas accomplished utilizing 18m and 24m boom lifts and awater truck.Following the removal of control room equipment, theroof, floors, walls, metal and other materials, were demolishedfrom the middle of the building outwards, with mainly columnsand the plant’s concrete foundation remaining.Responsible for the majority of this demolition wasthe Link Belt 330 Excavator, which demolished walls andfloors, while also loading trucks with construction debris.The Liebherr 934 excavator used its shear attachment to cutand remove pieces of the roof, while a small Bobcat S300was also utilized.“Tight demolition”During this portion of demolition, W.C. Maloney had tocope with working very close to the new Central Plant. “Theold plant was demolished very close to the new building,” saidJ.B. Hall, project executive for Skanska USA Building Inc.,the general contractor for the Central Plant project. “We wereabout 1.5m away from the new plant the whole time.”To avoid damaging the new plant theveranda of the old facility was cut back leavingonly the columns, some of which were nearlytouching the new facility. “We had to shearthe columns at their bottoms and pull themaway from the new building,” said Hall.One monthdemolition scheduleDuring concrete and foundation demolition,a Link Belt 330 excavator and aLink Belt 460 excavator equipped withhydraulic breakers were used to break upconcrete. In addition a John Deere excavatorwith a concrete processor crushed theconcrete, while removing the rebar.In total 8,000 t of concrete, 1,200t of metal and 600 t of constructiondebris were demolished and taken tolocal recycling facilities.Demolition could only take onemonth and planning was key to theproject’s success. “The schedule waschallenging,” said Hall. “We were pre-62 PDi • Is s u e 4 - 2009 • Oc t - No v

ed in one monthplanning the demolition for more than a year.”Work was carried out six days a week for 12 hours a dayexcept on Sundays, when crews worked 10 hours due to noiserestrictions. “The demolition contractor knew it was criticalthat we got through the demolition quickly,” said Hall.Tight between the two buildings. One tobe demolished and the other not.DITEQ AND SHIBUYA - the Professional's Choice866-688-1032 DIAMOND TOOLS & EQUIPMENTCONCRETE DESTROYER and FOAMINGCONCRETE DESTROYER easily cleans driedconcrete off tools and equipment without theneed of chisels and jackhammers!Discover the DITEQ100%Biodegradable!Non-AcidAlternativeAvailable in 32-ozspray, 1 gal, 5 gal and55 gal drumswww.DITEQ.comARIX DiamondArrangementTechnologyVisit DITEQ's Booth at WOCBooths S11043/O30315Is s u e 4 - 2009 • Oc t - No v • PDi 63

The boys areback in townAfter an absence of eight years,the NFDC Annual Conventionreturned to Killarney in SouthernIreland for what felt like anoverdue homecoming.PDi’s Mark Anthony reports.On paper, the latest Convention of the NFDC had allthe makings of a damp squib. Following high profileevents in Barcelona, Monte Carlo and Majorca, theunpredictable Irish weather held a certain foreboding.The return to Ireland was also a reminder that eight yearsago the then Convention Chairman, the late ClaudeBrown, suffered a stroke in the run-up to the event.And, of course, the latest Convention was scheduledto take place in the midst of an economic downturnthat has wreaked havoc on demolition workloads andprofit margins.But the membership of the NFDC is made of sternerstuff and, unperturbed by rain, history or finance,the tickets for the 2009 Convention were snapped upin record time and set it on its way to becoming one ofthe most memorable in recent history.40 Shades of GreenThe Hotel Europe in Killarney, part of the LiebherrGroup, is not just one of the best in Ireland but one ofthe best in Europe, affording spectacular views acrossLoch Leane, the McGillycuddy Reaks beyond and the“40 shades of green” landscape immortalised in theHotel Europe, Killarney.64 PDi • Is s u e 4 - 2009 • Oc t - No vJohnny Cash song of the same name. As NFDC presidentDavid Darsey put it: “the hotel combines Germanefficiency with the traditional, warm, Irish welcome.Thankfully, it’s not the other way around.”The NFDC’s well-attended Half Yearly BusinessMeeting took place in the depths of the Hotel Europe’sTardis-like building. As is traditional, President DavidDarsey welcomed delegates before covering mattersarising from the previous meeting and giving his halfyearlyreport. With the Learning & Skills Council grantfunding for industry training having been heavily andunexpectedly slashed, opening presentations on trainingby Construction Skills’ Martin Morrell and NationalDemolition Training Group president Howard Buttonwere eagerly anticipated, and well received. However,it appears that it remains a waiting game while negotiationscontinue.View from the USNext up was Mike Taylor, chief executive of the USNational Demolition Association. Having thanked delegatesfor the UK’s ongoing support for military actionin Iraq and Afghanistan and accepting US responsibilityfor the global credit crunch, Taylor went on to explainthat while US President Obama’s stimulus package hadyet to percolate down to Stateside demolition contractors,there were growing signs of positivity. A video ofMike Taylor’s speech can be viewed at: http://tinyurl.com/kwcsrg.Second vice president WilliamSinclair was next to providean update on developments at theEuropean Demolition Associationand to provide initial details of theDemolition Summit and DemolitionAwards scheduled to take place inNovember.The event sponsors were then givenan opportunity to address the delegates,starting with John Davitt of Hino/J HarrisAssemblers who provided a nice mix oftechnical know-how with a suitably Irishsmattering of humour. Davitt was followedby Sean Burden and Sean O’Hara of LiebherrGreat Britain, Alan Matchett of Sandvik Miningand Construction, Norrie Erwin of Quinn Direct, andA full house for the Business Meeting.Allen Smith and Michael Atkinson of Komatsu.Delegates were then whisked aboard a flotilla ofwaiting coaches, for transport to the nearby QuirkesQuarry. Here Hino, Liebherr and SandvikMining and Construction put on an impressiveequipment display and demonstration,together with welcome refreshments. After thedemonstration it was back to the hotel for thetraditional Gala Dinner.A Slice of VegasIt was one of the worst kept secrets in Irelandthat entertainer Joe Longthorne was to reprisehis show-stopping performance fromthe 2007 Convention in Monte Carlo.What no-one knew was that he would bepreceded with a welcoming address bySenator Paul Coghlan, one of the mostpowerful and respected men in Ireland.It was then time for Joe Longthorneand his band to bring a little bit of Las Vegasto Killarney, rocking the house with a mixture ofsongs and impersonations spanning decades of su-

NFDC President DavidDarsey and his wifedanced the night away.perb music. Delegatesdanced the night, andsome of the morning,away as the Gala Dinnertransformed intoa Gala Breakfast withsome resilient soulsstill partying when thesun probably came up behindthe clouds.Sore heads, sore feet and a sky that was more 40shades of grey didn’t stand in the way of delegates turningup in their droves for the penultimate event of the2009 Convention; a tour around the picturesque Ringof Kerry culminating with lunch at the Parknasilla Hoteland a visit to the charming Muckross House Estate.A thoroughly enjoyable, entertaining and informativeConvention was brought to a fitting close withan informal dinner on the Hotel Europe’s Terrace anda spectacular firework display utilising considerablymore explosives than are required for even the mostspectacular Las Vegas hotel implosion.www.demolition-nfdc.comPLEASE PRINTNameTitleCompanyAddressFast and Free Information with PDiEven though the internet is an incredible channel for communication between manufacturers/suppliers and users PDi Magazine offers its PDi Reader Service Centre. Each advertisementis marked with an enquiry no. If you require more information about the products or services shown in the advertisment just fill in the PDi Reader Service Card and fax it tothe PDi Editorial Office (fax no. +46 8 585 700 47) or log in to our website www.PDWorld.com/readerservice and make your enquiry there. Detailed information of what you arelooking for will be sent to you directly from the manufacturer/supplier. You choose if you want to have the information by mail or by internet.Fax your reader service card to +46 8 585 70047 or post it to PDic/o SCOP AB, P.O. Box 786, SE-191 27 Sollentuna, SwedenCity State ZipCountryPhoneE-mailFaxHomepagePDi issue/Year:____________Tic if information should be sentby e-mail or post: E-mail Post READER SERVICE NUMBERS FOR FREE INFORMATION101 102 103 104 105 106 107 108109 110 111 112 113 114 115 116117 118 119 120 121 122 123 124125 126 127 128 129 130 131 132133 134 135 136 137 138 139 140141 142 143 144 145 146 147 148149 150 151 152 153 154 155 156157 158 159 160 161 162 163 164165 166 167 168 169 170 171 172173 174 175 176 177 178 179 180Circle items to receive free product information. Please remember to state whichissue of PDi Magazine this inqury referes to.Convention Chairmangoes TransatlanticThis was the Convention that so nearly wasn’t. Aftermore than a year of negotiation and planning, and withthe fastest-selling Convention in history scheduled tostart just a few days later, Convention Chairman PatrickWilliamson decided to take himself off for a spot oftrout fishing.Williamson positioned himself on a rocky outcropand, having fished the same spot for some 20 years, tookthe apparently wise precaution of standing well back from the dropinto the Atlantic Ocean that lie below. But then disaster struck.According to Williamson, a freak wave came in on his blindsideand, while it failed to hit him, it was forced up and between the rocksbehind him, causing a wall of water to strike him in the back and dumphim unceremoniously in the water. Before he knew it, he was beingswept gently but perceptibly out to sea and towards America.“I tried to swim back but the weight of my clothes and the sheerforce of the current just made it impossible,” says Williamson. “It reallywas a life flashing before your eyes moment.”It was more than a moment. Even though his fishing partnerquickly raised the alarm, it was some time before the local Air SeaRescue helicopter located him and he was plucked to safety beforebeing rushed to hospital and treated for possible hypothermia. Yes, I wish to receive PDi MagazineSignature Date _________1. What is your company´s primarybusiness activity? Concrete cutting General demolition Demolition by explosives Highrise demolition Hazardous materials Landfill Re-use of demolition waste Recycling services General contractor Floor gridning Hydrodemolition Insurance Safety and project planning Architect Engineer Distributor/sales representative Other, specify________________________2. What is your function? Contractor Architect Engineer Distributor/sales representative Purchase Estimator Management Operator Other, specify________________________3. Reason for inquiry? Immediate need Future job General information4. Reason for inquiry? Immediate need Future job General information5. Size of your company? Less then 5 employees 6-20 employees 21-50 employees 51 or more employees6. Do you recommend, specify, approve orperform concrete cutting services? Recommend Specify Approve“Even in August the Atlantic is extremely cold and doctors told methat people are lucky to survive for 20 minutes,” he continues. “Iwas in the water for around 90 minutes and I consider myself tobe lucky to be alive.”In typical fashion, Williamson was soon out of bed and back onduty, ready to welcome the nearly 400 delegates that attended theConvention, most of whom had no inkling of his brush with death.Lucky to be alive Patrick Williamson. Perform None7. Do you recommend, specify, approve orperform demolition services? Recommend Specify Approve Perform None8. Do you recommend, specify, approve orperform recycling services? Recommend Specify Approve Perform None9. Do your company plan to buy any of thefollowing in the next 12 months?Concrete Cutting Wire saw Wall saw Flat/Floor saw Diamond chain saw Core drill Diamond blades/ bits or wires Other_________________________Demolition Excavator/carrier for demolition Long reach demolition boom Compact equipment Loading equipment Hydraulic breaker Concrete crusher Pulveriser Sorting grab Steel shear Other_________________________Recycling Mobile recycling equipment Stationary recycling equipment Screens Screeders Crushing bucketsOther equipment Floor grinding equipment Dust extractor equipment Wet vacuum equipment Air cleaning equipment Hydrodemolition equipment Implosion appareal Other__________________________Is s u e 4 - 2009 • Oc t - No v • PDi 65

THE PEAK OF EXCELLENCE19 – 25 APRILMUNICH++++BEST ++++A fair of superlatives:With innovations,premieres and allkey players.bauma has half a millionsquare meters of exhibitionspace. Not only is it the largestexhibition in the world.It is also a key internationaldriving force behind innovationsin the industry thatgives visitors a comprehensivelook at the market.Use bauma‘s leading internationalposition for yoursuccess.Messe München GmbHTel. (+49 89) 9 49 - 1 13 48Fax (+49 89) 9 49 - 1 13 49www.bauma.de66 PDi • Is s u e 4 - 2009 • Oc t - No vUS Demolition Associationannounces details on 2010annual conventionThe National Demolition Association‘s 37th Annual Convention, thelargest exposition of demolition equipment and services in the world,will be held at The Mirage in Las Vegas, 20 to 23 March, 2010. Eachyear, the National Demolition Association convention brings together awide cross section of professionals involved in the demolition process,including those involved in the demolition contracting, general contracting,civil engineering, recycling, and other industries. The convention includeseducational programmes, entertainment, and networking opportunitiesfor both Association members and other attendees. Exhibitors interestedin more information on the convention should go to www.demolitionassociation.com.US National DemolitionAssocation elects RaymondPasseno, CIH, of BierlienCompanies as PresidentRaymond Passeno, CIH, Vice President of Bierlein Companies, Inc.,Midland, MI, has been elected President of the National DemolitionAssociation, the leading trade organization for the global demolitionindustry. During his tenure with the Association, Passeno has beenactive in nearly every committee and has served as Vice President,Secretary, and Treasurer. As President, he expressed his determinationto make the newly redesigned and revitalized National DemolitionAssociation website the major global source of demolition information.“Our website will provide the training and tools necessary for membersto run safe and environmentally responsible businesses,” he said. “Itwill help us communicate to other industries, the government, and thepublic at large that implosions are only a small part of what we do. It willbecome a major portal for information on the demolition process, itsmeans and methods, practitioners, safety requirements, environmentalissues, benefits to society, and the engineering acumen it requires. As anindustry – through the many services we provide – we’re ‘making way’for the progress that accompanies the demolition process.”Passeno also noted that he is looking forward to further pursuingthe Association’s Strategic Plan to aid its members to be leaders inenvironmental stewardship, safety, education, government advocacy,and professional competency. On the education front, the Association isassisting Purdue University with the developmenta demolition-specific textbookto be used in its demolition specializationprogram, the first in the country.Other changes to the NationalDemolition Association Executive Committeeare the election of Don Rachelof Rachel Contracting, Maple Grove,MN, as Vice President; Jeff Kroeker ofKroeker Inc./Demolition & RecyclingContractors, Fresno, CA, as Secretary;and Peter Banks of CEI Boston LLC,Norfolk, MA, as Treasurer. Drew Lammersof Cohen Brothers Inc., Springfield,OH, is Past President. The Associationhas appointed a number of new membersto its Board of Directors. Theyare Morris Cephas of Cephas Contracting, Inc., Richmond, VA; DavidDarsey of Erith Contractors Ltd., Kent, United Kingdom; Rick Givan ofRecycled Materials Company Inc., Arvada, CO; Tillio Olcese of OlceseConstruction Co., Incline Village, NV; and Timothy Ramon of J.R. Ramon& Sons, Inc., San Antonio, TX.www.demolitionassociation.comDates for 16th GermanDemolition Conference setThe very appreciated German Demolition Conference will in 2010 bearranged for the 16th time. The conference is always very well attendedboth by contractors and suppliers to the German demolition industry.The conference will as usual be held in Berlin and takes place 19-20March, 2010. The General for the conference is as usual Dietrich Korthand any additional information and application can be found at www.asco-abbruch.de or on phone +49(0)30 5082906. Mr Korth canalso be reach on e-mail korth@asco-abbruch.dewww.asco-abbruch.deAnd the Demolition Awardswinners are.......The first ever Demolition Awards dinner was a night to remember atthe Hotel Okura in Amsterdam on 6 November, 2009. The numberof entries submitted for a ‘first-time’ event was astounding, making thejudging panel’s deliberations particularly challenging. However, duringthe judging meeting held in Amsterdam in early September there waslittle dissension concerning the determination of the winners of thevarious categories.Despite the fact that discussions over several of the categorieswere spirited, the final determinations were unanimous. Because of thenumber of entries received and their overall high standard, it was feltthat the judges ought to be able to make subsidiary awards when twoor more entries were of almost equal standard and thus were born the‘Highly Commended’ awards - a total of seven of these were made inaddition to the 12 main awards.Demolition Awards - the winners at a glanceDemolition Company of the Year: SafedemHighly Commended:Cantillon LtdDemolition Contract of the Year: KeltbrayHighly Commended:Carl Bolander & Sons, McGee GroupDemolition Safety Award:DH Griffin of TexasDemolition Training Award:Dorton GroupHighly Commended:Cuddy GroupDemolition Personality Award: Dr Dietrich Korth, ASCO GmbHEnvironmental & Recycling Award: Costello DemolitionExplosive Demolition Award: SafedemIndustrial Demolition Award: General SmontaggiUrban Demolition:KeltbrayInnovation Award-Series Product: VolvoHighly Commended: OmlockInnovation Award: Rusch Special ProductsHighly Commended: Liebherr France SAS,Kocurek Excavators LtdService & Support Award: Liebherr France SASThe event itself went off without a hitch, alwayspleasing for a first time event, and the attendeeswere to a man and woman impressed with theslickness of its organisation. The Okura Hotelprovided a magnificent venue, and the professionalismof its staff greatly aided the organisationof the event.As always with a first time event, it becameclear that the Award categories needs to be‘tweaked’ somewhat. The criteria that the judgeswill use to assess next year’s entries will be refinedand explained more clearly across all theexisting categories, and a new category will be introduced that willcover demolition during civil engineering works on projects such asbridges, roads etc.The Demolition Award is organised by the European DemolitionAssociation and D&Ri Magazine.www.eda-demolition.com

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