Abstract: The disposal of used tyres and waste foundry sand is a major environmental problem throughout the world which causes environmental hazards. Crumb rubber and foundry sand is a waste material that is ideal for use in concrete applications. The aim of the study is achieved to use of crumb rubber and foundry sand as a partial replacement of fine aggregate to produce M25 concrete. An experimental investigation is carried out on concrete containing crumb rubber and foundry sand in the range of 0, 5, 15, and 25% by weight of fine aggregate are cast and test for compressive strength and split tensile strength. Material was produced, tested and compared with conventional concrete in terms of workability and strength. These test were carried out on standard cube of 150*150*150mm and cylinder of 150*300mm for 7 and 28 days to determine the mechanical properties of concrete. The aim of this research is to know the behavior and mechanical properties of concrete after addition of industrial waste in different proportion by tests like compressive strength and split tensile.

| DOI: 10.17148/IARJSET.2021.8923