Common use of Cement Clause in Contracts

Cement. (i) Unless otherwise specified in the Specification or called for by the Engineer, cement shall be ordinary Portland cement in 50 kg. bags. The use of bulk cement will be permitted only with the approval of the Engineer. Changing of brands or type of cement within the same structure should be avoided as far as possible. (ii) The Contractor will have to make his own arrangements for procurement and storage of adequate quantity of cement. Cement in bulk may be stored in bins or silos which will provide complete protection from dampness, contamination and minimize caking and false set. Cement bags shall be stored in a dry enclosed shed (storage under tarpaulins will not be permitted), well away from the outer walls and insulated from the floor to avoid contact with moisture from the ground and so arranged as to provide ready access. Damaged or reclaimed or partly set cement will not be permitted to be used and shall be removed from the Site. The storage bins and storage arrangements shall be such that there is no dead storage. Not more than 12 bags shall be stacked in any tier. The storage arrangement shall be approved by the Engineer. Consignments of cement shall be stored as received and shall be consumed in the order of their delivery. (iii) Cement held in storage for a period of ninety (90) days or longer shall be tested. Should at any time the Engineer have reasons to consider that any cement is defective, then irrespective of its origin. date of manufacture and /or manufacturer's test certificate, such cement shall be tested immediately at the Contractor's cost at an approved laboratory and until the results of such tests are found satisfactory, it shall not be used in any work. The Contractor shall not be entitled to any claim of any nature on this account.

Cement. (i) Unless Cement, unless otherwise specified in the Specification or called for specified, shall be Portland cement of a brand approved by the EngineerEngineer and shall comply with the requirements of B.S. 12 with the exceptions that it may contain reactive volcanic ash (of not more than 10% of the total weight) and the quantity of insoluble residue permitted in B.S. 12 may be exceeded. A manufacturer's Certificate of Test in accordance with B.S. 12 shall be supplied for each consignment delivered to the Site. Should the Contractor require to use cement of the rapid hardening variety, he shall obtain the approval of the Engineer and also obtain any instructions regarding modifications to these Preambles caused thereby. Any additional cost that may be caused by the use of rapid hardening cement shall be ordinary Portland at the Contractor's expense. Cement may be delivered to the Site either in bags or in bulk. If delivered in bags, each bag shall be properly sealed and marked with the manufacturer's name and on the Site is to be stored in weather-proof shed of adequate dimensions with a raised floor. Each consignment shall be kept separate and marked so that it may be used in the sequence in which it is received. Any bag found to contain cement which has set or partly set, shall be completely discarded and not used in 50 kgthe Works. bagsBags shall not be stored more than 1,500 mm in height. The use of If delivered in bulk the cement will shall be permitted only with stored in a weather-proof silo either provided by the cement supplier or by the Contractor, but in either case the silo shall be to the approval of the Engineer. Changing of brands or type of cement within the same structure should be avoided as far as possible. (ii) The Contractor will have to make his own arrangements for procurement and storage of adequate quantity of cement. Cement in bulk may be stored in bins or silos which will provide complete protection from dampness, contamination and minimize caking and false set. Cement bags shall be stored in a dry enclosed shed (storage under tarpaulins will not be permitted), well away from the outer walls and insulated from the floor to avoid contact with moisture from the ground and so arranged as to provide ready access. Damaged or reclaimed or partly set cement will not be permitted to be used and shall be removed from the Site. The storage bins and storage arrangements shall be such that there is no dead storage. Not more than 12 bags shall be stacked in any tier. The storage arrangement shall be approved by the Engineer. Consignments of cement shall be stored as received and shall be consumed in the order of their delivery. (iii) Cement held in storage for a period of ninety (90) days or longer shall be tested. Should at any time the Engineer have reasons to consider that any cement is defective, then irrespective of its origin. date of manufacture and /or manufacturer's test certificate, such cement shall be tested immediately at the Contractor's cost at an approved laboratory and until the results of such tests are found satisfactory, it shall not be used in any work. The Contractor shall not be entitled to any claim of any nature on this account.