Compressive Strength of Concrete using Waste Tyre Rubber

At present the disposal of waste tyres is becoming a major waste management problem in the world. It is estimated that 1.2 billion of waste tyre rubber produced globally per year. Tyres tend to re-emerge in time from the dump and micro-organisms may take more than 80 years to biodegrade them. In this context, our present study aims to investigate the optimal use of waste tyre rubber. This research paper explores a detailed study of compressive strength of concrete by using waste tyre rubber as percentage replacement of coarse aggregate. Conventional mix M-25 and M-30 are designed as per IS 10262:2009. The waste tyre rubber is chipped according to specified shape so as to ideally replace coarse aggregate (2.5% & 5%). Total 54 concrete cube specimens were casted including specimen with and without replacement of coarse aggregate.The compressive strength test were conducted after 7days, 14 days and 28 days of curing. The replacement of coarse aggregate was effective and compressive strength was increasing in the case of 2.5% replacement in both mix (M-25 and M-30). The use of waste tyre rubber in the concrete results into benefits of better disposal of waste rubber and also increased the characteristics strength of concrete.