JCE_V1_N1_RP4 T. Senthil Vadivel R. Thenmozhi Journal on Civil Engineering 2249 - 0779 1 1 34 39 Waste Tyre Rubber, Rubber Crumb, Shredded Rubber and Rubbercrete Recent investigation accounted that more than one billion tyres are scrapped annually throughout the world, as we know rubber materials are durable, flexible and elastic which are the basic properties required for manufacturing of tyre that itself engender critical problem of managing when it become waste. When waste tyre is dumped into the land it takes 100 years to decompose and it enmesh water which behaves as best breeding grounds for insects and produce health hazards to the human society. While charring, tyres produce toxic gases and generates pollution to the environment. To alternate the aforesaid methods, the tyre wastes are tried as replacement material in concrete either as fine or coarse aggregate by volume batching but no researcher suggested the optimal usage of this waste tyre rubber. The current research investigates the optimal consumption of shredded rubber and truck tyre rubber in concrete called in the name of Rubbercrete. A total of 72 cubes, cylinders and flexure beams of M20 and M25 grade concrete were cast and tested for the combined replacement of both fine and coarse aggregates simultaneously with that of shredded rubber and truck tyre rubber chiseled into nominal size of coarse aggregate by 2, 4, 6 and 8% in concrete by weigh batching. The test results were compared with 18 numbers of conventional specimens and it was identified that 6% of replacement performs better in compressive strength, split tensile strength and flexural strength and hence it is being an optimal replacement. December 2010 - February 2011 Copyright © 2011 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=1350