Dextra Pacific Limited 02 Nov 2010 - Arnaud de Surville
Dextra Pacific Limited 02 Nov 2010 - Arnaud de Surville
Dextra Pacific Limited 02 Nov 2010 - Arnaud de Surville
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Sustainability and rehabilitation using FRPs<br />
1<br />
1<br />
<strong>Dextra</strong> <strong>Pacific</strong> <strong>Limited</strong><br />
<strong>02</strong> <strong>Nov</strong> <strong>2010</strong> - <strong>Arnaud</strong> <strong>de</strong> <strong>Surville</strong>
Sustainability and rehabilitation using FRPs 2<br />
Preamble<br />
• Aerospace industry<br />
• Aslan FRP<br />
• Rehabilitation with FRP<br />
• Objectives of presentation
Sustainability and rehabilitation using FRPs 3<br />
In<strong>de</strong>x of presentation<br />
• What are FRPs?<br />
• Why use FRPs?<br />
• Repair technologies<br />
• Case studies
Sustainability and rehabilitation using FRPs 4<br />
In<strong>de</strong>x of presentation<br />
• What are FRPs?<br />
• Why use FRPs?<br />
• Repair technologies<br />
• Case studies
Sustainability and rehabilitation using FRPs 5<br />
FRP stands for:<br />
• Fiber Reinforced Plastics
Sustainability and rehabilitation using FRPs 6<br />
Commonly used fibres<br />
Glass<br />
Carbon<br />
Aramid
Sustainability and rehabilitation using FRPs 7<br />
Typical tensile performance
Sustainability and rehabilitation using FRPs 8<br />
Fibre<br />
Resin<br />
Glass<br />
Aramid<br />
Carbon<br />
+<br />
Poly-ester<br />
Vinyl-ester<br />
Epoxy
Typical profile<br />
Sustainability and rehabilitation using FRPs 9
Sustainability and rehabilitation using FRPs 10<br />
Composite behavior – matrix<br />
Light Microscopy 60X<br />
Light Microscopy 240X
Sustainability and rehabilitation using FRPs 11<br />
Composite behavior - fibers
Sustainability and rehabilitation using FRPs 12<br />
Composite behavior – resin
Pultrusion process<br />
Sustainability and rehabilitation using FRPs 13
Sustainability and rehabilitation using FRPs 14<br />
Fabric<br />
Laminates<br />
Rods<br />
Tape
Sustainability and rehabilitation using FRPs 15<br />
In<strong>de</strong>x of presentation<br />
• What are FRPs?<br />
• Why use FRPs?<br />
• Repair technologies<br />
• Case studies
Sustainability and rehabilitation using FRPs 16<br />
Why use FRP?<br />
• Impervious to corrosion<br />
• ¼ weight of steel<br />
• 100 to 400% strength of steel<br />
• Low modulus
Sustainability and rehabilitation using FRPs 17<br />
Two <strong>de</strong>sign approaches = optimization<br />
• Tensile failure<br />
• Concrete failure
Sustainability and rehabilitation using FRPs 18<br />
Common applications<br />
Bridge <strong>de</strong>cks<br />
Marine works<br />
Decorative concrete<br />
Concrete pavement
Sustainability and rehabilitation using FRPs 19<br />
Tunnel excavation<br />
Softeye technology
Sustainability and rehabilitation using FRPs 20<br />
Environment <strong>de</strong>gradation<br />
Overloading<br />
Displacements
Corrosion<br />
Sustainability and rehabilitation using FRPs 21
Structural failure<br />
Sustainability and rehabilitation using FRPs 22
Acci<strong>de</strong>ntal damage<br />
Sustainability and rehabilitation using FRPs 23
Overloading<br />
Sustainability and rehabilitation using FRPs 24
Aging<br />
Sustainability and rehabilitation using FRPs 25
Sustainability and rehabilitation using FRPs 26<br />
In<strong>de</strong>x of presentation<br />
• What are FRPs?<br />
• Why use FRPs?<br />
• Repair technologies<br />
• Case studies
Sustainability and rehabilitation using FRPs 27<br />
Repair and strengthening<br />
Retrofit, including seismic<br />
Conservation
Sustainability and rehabilitation using FRPs 28<br />
Constraints<br />
• Minimum intervention<br />
• Change of function/use (e.g. public)<br />
• Repair rather than replace or reconstruction<br />
• Remove source of <strong>de</strong>gradation<br />
• Combination of various materials<br />
• Rehabilitation should be reversible<br />
• Design life<br />
• high performance materials
Sustainability and rehabilitation using FRPs 29<br />
Three main phases<br />
• Diagnosis of existing conditions<br />
• Evaluation and characterization of repairs<br />
• Long term monitoring<br />
• Non Destructive Evaluation<br />
▫ Q/A: encapsulation, <strong>de</strong>pth, moisture…<br />
▫ Q/C: bond strength, durability tests
Sustainability and rehabilitation using FRPs 30<br />
Conventional techniques<br />
bracing/confinement<br />
Bon<strong>de</strong>d steel plates <br />
post-tensioning
Load [kN]<br />
Sustainability and rehabilitation using FRPs 31<br />
Conventional techniques<br />
140<br />
120<br />
100<br />
Strengthened prestress<br />
Strengthened<br />
80<br />
Reference<br />
60<br />
40<br />
20<br />
0<br />
0 10 20 30 40 50 60 70<br />
Midpoint <strong>de</strong>flection [mm]
Sustainability and rehabilitation using FRPs 32<br />
Conventional techniques<br />
• Add “<strong>de</strong>ad weight” to the repaired structure<br />
• Subject to corrosion and vandalism<br />
• Tedious to install<br />
• 99% custom ma<strong>de</strong><br />
• Aesthetically unsatisfactory<br />
• Costly and ugly
Sustainability and rehabilitation using FRPs 33<br />
1 st Generation of FRP repair
Sustainability and rehabilitation using FRPs 34<br />
Early approach<br />
• Woven CFRP fabric<br />
• Cured CFRP laminates
Externally bon<strong>de</strong>d fabric<br />
Sustainability and rehabilitation using FRPs 35
Externally bon<strong>de</strong>d plates<br />
Sustainability and rehabilitation using FRPs 36
Sustainability and rehabilitation using FRPs 37<br />
EBR limitations<br />
• Require heavy surface preparation<br />
• May require several layers<br />
• Remain exposed<br />
• Aesthetic compromise<br />
• Application subject to weather conditions<br />
• Soffit of beams and columns<br />
• Messy and wasted efficiency
Sustainability and rehabilitation using FRPs 38
Sustainability and rehabilitation using FRPs 39<br />
Embed<strong>de</strong>d profiles<br />
• Rods<br />
• Tapes
NSM innovation<br />
Sustainability and rehabilitation using FRPs 40
NSM installation<br />
Sustainability and rehabilitation using FRPs 41
EBR vs. NSM<br />
Sustainability and rehabilitation using FRPs 42
Sustainability and rehabilitation using FRPs 43<br />
EBR vs. NSM<br />
Courtesy of R. El-Hacha, J.N da Silva Filho, G.S. Melo, S.H. Rizkalla
Sustainability and rehabilitation using FRPs 44<br />
NSM benefits<br />
• Maximized efficiency<br />
• Minimum surface preparation<br />
• Quick installation<br />
• Concealed, preserved aesthetics<br />
• Suitable for negative moments<br />
• Cost effective and uncompromising
Sustainability and rehabilitation using FRPs 45<br />
3 rd Generation of FRP repair
Sustainability and rehabilitation using FRPs 46<br />
3 rd generation FRP: PT tendon<br />
Burj Dubai - UAE
Sustainability and rehabilitation using FRPs 47<br />
3 rd generation FRP: PT tendon
Sustainability and rehabilitation using FRPs 48<br />
3 rd generation FRP: PT tendon<br />
14 th century cloister in Orvieto - Italy<br />
Courtesy of Fidia Srl
Sustainability and rehabilitation using FRPs 49<br />
3 rd generation FRP: PT tendon
Sustainability and rehabilitation using FRPs 50<br />
Now a five star boutique hotel…
Sustainability and rehabilitation using FRPs 51<br />
PT promises<br />
• State of the art performance<br />
• Minimum invasion<br />
• Multipurpose<br />
• Active repair<br />
• Costly but <strong>de</strong>adly efficient
Design gui<strong>de</strong>lines<br />
Sustainability and rehabilitation using FRPs 52
Sustainability and rehabilitation using FRPs 53<br />
In<strong>de</strong>x of presentation<br />
• What are FRPs?<br />
• Why use FRPs?<br />
• Repair technologies<br />
• Case studies
Sustainability and rehabilitation using FRPs 54<br />
Masonry strengthening
Sustainability and rehabilitation using FRPs 55<br />
Seismic/blast prevention
Joint strengthening<br />
Sustainability and rehabilitation using FRPs 56
Sustainability and rehabilitation using FRPs 57<br />
Close up<br />
FRP rod
Sustainability and rehabilitation using FRPs 58<br />
Bridge Rehabilitation
Sustainability and rehabilitation using FRPs 59
Sustainability and rehabilitation using FRPs 60<br />
Traditional concrete repair
Conceptual <strong>de</strong>sign<br />
Sustainability and rehabilitation using FRPs 61
Sustainability and rehabilitation using FRPs 62<br />
Deck strengthening<br />
Groove cut in one single pass
Sustainability and rehabilitation using FRPs 63<br />
Minimum traffic interruption
Sustainability and rehabilitation using FRPs 64<br />
Retrofit of cement silos
Sustainability and rehabilitation using FRPs 65<br />
Blue Circle Storage facility - USA
Sustainability and rehabilitation using FRPs 66<br />
Conventional repairs<br />
Crack injection and substrate<br />
concrete replacement
Sustainability and rehabilitation using FRPs 67<br />
NSM preparations<br />
Groove cutting
Sustainability and rehabilitation using FRPs 68<br />
CFRP rods placement<br />
Filling grooves with epoxy<br />
Inserting Aslan rods
Sealing the rods<br />
Sustainability and rehabilitation using FRPs 69
Full capacity restored<br />
Sustainability and rehabilitation using FRPs 70
Sustainability and rehabilitation using FRPs 71<br />
Woo<strong>de</strong>n beams strengthening
Sustainability and rehabilitation using FRPs 72<br />
Private resi<strong>de</strong>nce conversion - Italy
Sustainability and rehabilitation using FRPs 73<br />
NSM vs. bolted steel plates<br />
Conventional<br />
NSM
Chiseled grooves<br />
Sustainability and rehabilitation using FRPs 74
Almost invisible…<br />
Sustainability and rehabilitation using FRPs 75
Sustainability and rehabilitation using FRPs 76<br />
Stone constructions
Sustainability and rehabilitation using FRPs 77<br />
Pietersheim 12s castle - Belgium<br />
(Courtesy of Triconsult)
Sustainability and rehabilitation using FRPs 78<br />
Angkor Wat temple - Cambodia<br />
Stone work reinforcement<br />
and<br />
pinning
Pillars<br />
reinforcement<br />
Sustainability and rehabilitation using FRPs 79<br />
Saint Trudo Church - Belgium<br />
(Courtesy of Triconsult)
New RC structure<br />
Sustainability and rehabilitation using FRPs 80
Sustainability and rehabilitation using FRPs 81<br />
Galaxy Casino Complex - Macau
Sustainability and rehabilitation using FRPs 82<br />
Constraints<br />
• Design requirements<br />
• Time<br />
• Height<br />
• “first time”
Sustainability and rehabilitation using FRPs 83<br />
Detailed <strong>de</strong>sign<br />
Layout plan<br />
Rods arrangement
Site conditions<br />
Sustainability and rehabilitation using FRPs 84
Sustainability and rehabilitation using FRPs 85<br />
Grooving and rod laying
Done in 48h!<br />
Sustainability and rehabilitation using FRPs 86
Conclusion<br />
Sustainability and rehabilitation using FRPs 87
Sustainability and rehabilitation using FRPs 88<br />
Conclusion<br />
• Versatility and performance<br />
• Cost effectiveness<br />
• Constant <strong>de</strong>velopment<br />
• Plentiful research<br />
• Conservative industry<br />
▫ Attitu<strong>de</strong> towards innovation<br />
▫ Design standards
Sustainability and rehabilitation using FRPs 89<br />
Hong Kong in the headlines…
Sustainability and rehabilitation using FRPs 90<br />
Thank you!
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