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Abstract

The present research studies the addition of sand dust (SD) on the performance of cement grout. Cube specimens of 5 x 5 x 5 cm were made with different mixing temperature and compositions. The mixing temperatures were 15, 30, 45 and 60°C. It was observed that grout mixed at 60°C is not suitable for bonded post tensioned concrete structure because the efflux time of fluidity test is not within the allowable limit. Grout consisting of cement, sand dust and water shows better bond stress and resistance to salt attack than grout consisting of cement and water. On the other hand compressive strength of controlled sample shows higher values than the samples with sand dust. The rate of capillary suction is almost same for all the fresh grout mixed at different temperature and composition.