Impact of waste tire rubber on the strength and workability of concrete.

Non-biodegradable waste has reached the top of the global priority list. The increased use of materials such rubber, glass, and plastic in our daily lives is posing a health and environmental risk. 6.3 billion tonnes of plastic and 3.5 million tonnes of rubber waste have been generated so far. Concrete is the main component for the construction of a building. It is manufactured by using the materials like cement, coarse aggregate, fine aggregate and water. It is used to make structural elements such as beams, columns, foundations, and slabs etc. The literature study reveals that there is very little literature on the use of rubber, hence there is a lot of research that needs to be done. In this study, rubber is cut into 20mm aggregates and immersed in sodium hydroxide (NaOH) and calcium hypochlorite Ca(ClO)2 solutions for 6, 24, and 72 hours, respectively. The rubber is then washed after being removed from the liquids the coarse aggregate was partially replaced in the concrete mix. This paper presents the results on analysis of scrap rubber, which is used in the building industry as a partial replacement for coarse material. With the usage of rubber, it is not only possible to reduce the use of natural coarse aggregate, but also able to decrease pollution. From the results it is found that strength and workability is increased slightly with the effect of rubber waste. [ABSTRACT FROM AUTHOR]