Behavior of Recycled Tyre Rubber and Stone Dust in Concrete

Abstract

The present investigation aims in the study of properties of concrete in which stone dust is used as a partial replacement for natural sand and partial replacement of tyre of size 4.7 to 100 mm for coarse aggregate by weight for concrete. Stone dust is replaced at replacement levels of 0%, 20%, 25%, 30%, 35% and 40%. A set of 6 numbers of concrete cubes were constructed with cement Concrete ratio 1:1.5:3, , 6 numbers cube in each ratio, fine aggregate being river sand and 150 micron free stone dust with replacement levels of 20%, 25%,30%,35% and 40% in each ratio i.e. substituting natural river sand. After this 30% stone dust replace the sand cube gives max strength, then replace coarse aggregate as tyre about 2%,5%,10% and checking strength. In the investigation 6 numbers of standard cubes were constructed using strength Nlmm2 with cement concrete. ratio 1:1.5:3, 6 numbers in each ratio, fine aggregate being river sand and 150 micron free stone dust with replacement levels of 0%, 10%, 20%, 35%, and 40% in each ratio i.e. substituting natural river sand. fine aggregate with concrete ratios are compared with allowable compressive strength requirements of concrete specified by IS 516-1959.