The Specific gravity of rubber powder was 1.05 and that of the other two sizes were 1.13. The three sizes of crumb rubber were mixed in definite percentages (2e4mm size in 25%, 0.8e2 mmsize in 35% and rubber powder in 40%) to bring it to zone II. This was performed in the best of our knowledge, for the first time as itwas noticed in any literature. The chemical composition of Crumb Rubber, physical properties and chemical composition of cement are given in Thomas et al., 2014.