Experimental Investigation On Partial Replacement Of Natural Fine Aggregate By Steel Slag And Natural Coarse Aggregate By Waste Limestone Aggregate In Cement Concrete

Cement concrete is a versatile building construction material in civil engineering and it is also one of the world’s most extensively used construction material around the world in almost all construction projects and in many construction applications. Construction activities and projects are increasing around the world which has resulted into the excessive extraction and utilization of naturally available materials like natural river sand, stones and rocks, lime, clay, water etc. Currently the problems faced by the use of cement concrete includes high demand of cement concrete, cost of cement and concrete making materials, pollution, excessive extraction and utilization of natural river sand and stones, water etc. Because the sand is being extensively extracted from the river bed deposits, it is depleting at a faster rate. Hence it is necessary to find an alternative material such as industrial waste slag and waste pieces of stones from the stone quarries in the cement concrete production. This dissertation work deals with the study of partial replacement of natural fine aggregate by steel slag and natural coarse aggregate by waste limestone aggregate in M20 grade of cement concrete. Steel slag is a waste by-product obtained from the iron and steel plants and waste limestone aggregates are the waste broken pieces of limestone obtained from the limestone quarries. In this work, we have made an attempt to study the compressive, split tensile and flexural strength of M20 grade cement concrete by using steel slag and waste limestone aggregate as partial replacement to fine aggregates and coarse aggregates. The compressive strength test is studied for 7 and 28 days of curing period and the split tensile and flexural strength is studied for 28 days of curing period.