REPLACEMENT OF COARSE AGGREGATE BY RUBBER FRAGMENTS IN CONCRETE

A large variety of waste materials is considered feasible and even much valuable additives for concrete. Some of these materials include cellulose, fly ash, silica fumes and wood particles. Rubber obtained from scrapped tyres is considered as the most recent waste materials that have been examined because of its vital use in the construction field. By replacing course aggregates with rubber aggregate in the form of cubical or angular aggregates which increase the shrinkage properties of the concrete. It was also seen from the past studies that it also increases the freeze – throw characteristics of the concrete. It does not only increase the freezing and throwing characteristic but also the expansion and contraction of the concrete were cut in half. And hence the overall advantages is that cracking is reduced. Obviously, these are all excellent advantages when they are used in the optimum proportion otherwise if the rubber content is more then there will be a strength reduction of the concrete. In this paper, cubical and angular rubber fragments were mixed with the concrete and its cube was made. The compressive strength of the concrete cubes was tested with the help of Universal Testing Machine (UTM).