SAIL General Technical Specification - Engineering Projects India Ltd.
SAIL General Technical Specification - Engineering Projects India Ltd. SAIL General Technical Specification - Engineering Projects India Ltd.
2.3.3 Crusher dust 2.4 Lime 2.5 Surkhi 2.6 Cement © 2007 MECON Limited All rights reserved General Technical Specification Crusher stone dust ( that is retained on 300 micron sieve ) only to be used under floors or at locations where ever sand filling is generally used. In this project sand filling is not to be used .In cases wherever sand filling is specified / indicated ,the same is to be replaced with crusher dust. Lime for mortars and concrete shall conform to IS: 712-1984 The total of CaO and MgO content in quick lime shall not be less than 85% (MgO shall not exceed 5%). Quicklime, after slaking, shall leave a residue of not more than 5% by weight on IS sieve 85. DELETED Ordinary Portland cement / Portland slag cement complying with the requirements of IS:269-1989 and I.S. 455-1989 respectively shall be used for making plain and reinforced concrete, cement grout and mortar. Other types of cement may be used depending upon the requirements of certain jobs with the approval of the Engineer. These shall conform to the following standards : Portland Pozzolana Cement IS: 1489-1991 Rapid Hardening Portland Cement IS: 8041-1990 43 Grade Ordinary Portland Cement IS: 8112-1989 53 Grade Ordinary Portland Cement IS: 12269-1987 Hydrophobic Portland Cement .. IS: 8043-1991 High alumina cement for structural work IS: 6452-1989 White portland cement IS: 8043-1989 Sulphate Resisting Portland Cement IS: 12330-1988 2.6.1 Testing of samples The Contractor shall supply a copy of the manufacturer's test certificate for each consignment of cement supplied by him and consignments shall be used on work in the order of delivery. The Contractor shall supply samples of cement to the Engineer as frequently as he may require for testing. The sampling of cement for testing shall be according to IS: 3535-1986. All tests shall be in accordance with the relevant clauses of IS: 4031 (Part-I to Part-15) 1988 to 1991 & IS: 4032-1985. 2.6.2 Contractor's responsibility From the time a consignment of cement is delivered at site and tested and approved by the Engineer until such time as the cement is used on the works, the Contractor shall be responsible for keeping the same in sound and acceptable condition and at his expense and risk. Any cement which deteriorates while in the Contractor's charge and is rejected Civil Page 4 of 42 GS-07
© 2007 MECON Limited All rights reserved General Technical Specification as unsuitable by the Engineer, shall be removed from the site to outside the limits of work at the cost of contractor within two days of ordering such removal by the Engineer. 2.6.3 Stock of cement In order to ensure due progress, the Contractor shall at all times maintain on the site at least such stock of cement as the Engineer may from time to time consider necessary. No cement shall be used upon the works until it has been accepted as satisfactory by the Engineer. 2.6.4 Storage of cement 2.7 Water The cement shall be stored in such manner as to permit easy access for proper inspection and in a suitable weather-tight, well ventilated building to protect it from dampness caused by ingress of moisture from any source. Different types of cement shall be stored separately. Cement bags shall be stacked at least 15 to 20 cm clear of the floor leaving a space of 60 cm around the exterior walls. The cement shall not be stacked more than 10 bags high. Each consignment of cement shall be stacked separately to permit easy access for inspection. Water used for mixing concrete and mortar and for curing shall be clean and free from injurious amounts of oil, acid, alkali, salts, sugar, organic materials or other substances that may be deleterious to concrete or steel. The pH value of water shall generally be not less than '6'. Water has to meet the requirements mentioned in clause 4.3 of IS: 456- 1978. Water shall be obtained from an approved source. Where it is obtained from a source other than a supply main, it shall be tested to establish its suitability. Water for construction purpose shall be stored in proper storage tanks to prevent any organic impurities getting mixed up with it. 2.8 Admixture for Concrete 2.8.1 Approval 2.8.2 Types Admixtures to concrete shall not be used without the written consent of the Engineer. When permitted, the Contractor shall furnish full details from the manufacturer and shall carry out such test as the Engineer may require before any admixture is used in the work. 2.8.2.1 Integral water proofer Admixtures used as integral water proofer shall be free of chlorides and sulphates and shall conform to IS: 2645-1975. The application and doses shall be as per manufacturer's specification. 2.9 Interval of Routine Test 2.9.1 The routine tests of materials, delivered at site, shall be at the following intervals : Aggregates - Fortnightly or for every 200 m3 for each aggregate whichever is earlier and in other respects generally as per IS : 2386 (Part 1 to 8)-1963. Cement - Fortnightly or for each consignment, within 4 days of delivery and in other respects generally as per IS : 4031-1988. Civil Page 5 of 42 GS-07
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2.3.3 Crusher dust<br />
2.4 Lime<br />
2.5 Surkhi<br />
2.6 Cement<br />
© 2007 MECON Limited<br />
All rights reserved<br />
<strong>General</strong> <strong>Technical</strong> <strong>Specification</strong><br />
Crusher stone dust ( that is retained on 300 micron sieve ) only to be used under floors or<br />
at locations where ever sand filling is generally used. In this project sand filling is not to<br />
be used .In cases wherever sand filling is specified / indicated ,the same is to be replaced<br />
with crusher dust.<br />
Lime for mortars and concrete shall conform to IS: 712-1984 The total of CaO and MgO<br />
content in quick lime shall not be less than 85% (MgO shall not exceed 5%). Quicklime,<br />
after slaking, shall leave a residue of not more than 5% by weight on IS sieve 85.<br />
DELETED<br />
Ordinary Portland cement / Portland slag cement complying with the requirements of<br />
IS:269-1989 and I.S. 455-1989 respectively shall be used for making plain and reinforced<br />
concrete, cement grout and mortar.<br />
Other types of cement may be used depending upon the requirements of certain jobs<br />
with the approval of the Engineer. These shall conform to the following standards :<br />
Portland Pozzolana Cement IS: 1489-1991<br />
Rapid Hardening Portland Cement IS: 8041-1990<br />
43 Grade Ordinary Portland Cement IS: 8112-1989<br />
53 Grade Ordinary Portland Cement IS: 12269-1987<br />
Hydrophobic Portland Cement .. IS: 8043-1991<br />
High alumina cement for structural work IS: 6452-1989<br />
White portland cement IS: 8043-1989<br />
Sulphate Resisting Portland Cement IS: 12330-1988<br />
2.6.1 Testing of samples<br />
The Contractor shall supply a copy of the manufacturer's test certificate for each<br />
consignment of cement supplied by him and consignments shall be used on work in the<br />
order of delivery. The Contractor shall supply samples of cement to the Engineer as<br />
frequently as he may require for testing. The sampling of cement for testing shall be<br />
according to IS: 3535-1986. All tests shall be in accordance with the relevant clauses of<br />
IS: 4031 (Part-I to Part-15) 1988 to 1991 & IS: 4032-1985.<br />
2.6.2 Contractor's responsibility<br />
From the time a consignment of cement is delivered at site and tested and approved by<br />
the Engineer until such time as the cement is used on the works, the Contractor shall be<br />
responsible for keeping the same in sound and acceptable condition and at his expense<br />
and risk. Any cement which deteriorates while in the Contractor's charge and is rejected<br />
Civil<br />
Page 4 of 42<br />
GS-07
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