An Experimental Study on Partial Replacement of Cement by Ggbs and Natural Sand by Quarry Sand in Concrete

Concrete is the most widely used construction material in civil engineering industry because of its high structural strength and stability. The concrete industry is looking for supplementary cementitious material or industrial by product with the objective of reducing the carbon dioxide emission which is harmful to environment. Ground granulated blast furnace slag (GGBS) is the solid wastes generated by industry are used as a replacement material for cement. Quarry sand is produced from quarry industry which is thrown on land fill; to reduce the sand consumption quarry sand is used as an alternative material for sand replacement. This paper deals with the effective utilization of waste material in concrete production as a partial replacement for Cement and sand. The cement has been replaced by GGBS in the range of 30%, 40% and 50% by weight of cement, quarry sand in the range of 40%, 50% and 60% by weight of cement for M40 grade mix. Workability test was carried out on fresh properties of concrete while compressive strength, split tensile strength and flexural strength were carried on hardened concrete. It is found that by the partial replacement of cement with GGBS and sand with Quarry sand helped in improving the strength of the concrete substantially compared to normal mix concrete. Compressive strength test was carried out for 7, 28 and 56 days while flexural and split tensile strength test was carried out at 28 days curing period.