Quality of specimens. The test specimens shall have the compressive strength specified for each quality of cement at the appropriate age as given herein. If the required strength is not obtained at 28 days, the Contractor will be required to cut out and reconstruct all work represented by the test specimen at his own expense with all dispatch, always provided that the Engineer may first permit further tests, at the Contractor‟s expense, to prove the quality of he deposited concrete. In the case of seven day works cube tests proving unsatisfactory, the work may be stopped, but shall not be liable to rejection until the result of the twenty eight day test is known. In the event of the results of the twenty eight day works Cube Tests proving unsatisfactory, the work represented shall be immediately liable to rejection. The contractor may, however, be given the option of cutting three specimens from the completed work subject to the direction of the engineer, and preparing there from test cubes or cores which shall be sent to the Testing Laboratory for testing as for works cube tests Should the average strength of these specimens attain the specified minimum twenty eight day strength, the work will, subject to the Engineer‟s discretion, be accepted. (Cont‟d.) Specification Concrete Work
