Common use of Cement Clause in Contracts

Cement. Cement shall comply with British Standards as follows: Portland cement - B.S. 12 Rapid hardening cement - B.S. 12 Except as regards the addition of colorant to BS 1014 which should not exceed 5% of cement by weight Sulphate resisting Portland cement complies with BS 4027. Rapid hardening cement may be used in lieu of ordinary Portland cement only with the prior approval of the Architect or Engineer provided that all conditions applying to its use are strictly observed. Any additional expenses in connection with the use of such cement shall be borne by the Contractor. The use of high alumna cement will not be permitted. All cement shall be delivered to the site in sealed bags bearing the mark of the manufacturer. Re-bagged cement, cement in torn bags will not be allowed on the site. Each consignment of cement shall be accompanied by the manufacturer‟s certificate showing that a representative sample of the consignment has been tested and complies with the appropriate specification. From time to time as requested by the Architect/Engineer, copies or the cement manufacture‟s test certificates shall be delivered to the Architect/Engineer or his representative on the site promptly, but such documents shall not preclude the Architect or Engineer from rejecting any cement which does not in every way comply with the specification. Specification Concrete Work