AN EXPERIMENTAL INVESTIGATION ON PARTIAL REPLACEMENT OF CEMENT BY GGBFS WITH ADMIXTURE

Civil Engineering/Structural Engineering

This paper is a part of experimental investigation to study the characteristic of concrete by using the industrial waste material, GGBFS as partial replacement of cement with Master Set AC 100. Ground Granulated Blast Furnace Slag (GGBFS) is a byproduct from the blast furnaces used to make iron. Chloride based ingredients are used in the manufacturing of Master Set AC 100 admixture. Master Set AC 100 is formulated for use as accelerator to facilitate high early and higher ultimate strengths in concrete, also to speed up the setting times in normal or especially in cold weather concreting. GGBFS is a non-metalic product consisting essentially silicates and aluminates of calcium and other bases. The replacement percentage of cement by GGBFS is 20%, 30% and 40% by the weight of M30 grade concrete. The concrete cubes and cylinders were casted with varying percentage of GGBFS. The specimens were cured and tested for compressive strength and split tensile strength in 7 days, 14 days and 28 days for concrete. The tests result shows the remarkable enhancement in the strength.

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