Application of Crumb Rubber in Concrete Industry: A Critical Review

In current scenario, there is no comprehensive utilization for abundance of non-biodegradable tire waste and scrap of tires which affect the environment and whole ecosystem as a Hazardous waste because a small proportion of waste is recycled. As per studies it has been investigated to modify the conventional concrete into crumb rubber concrete, coarse aggregates or fine aggregates can be replaced by 25% of crumb rubber beyond which toughness decreases including modulus of elasticity. In specific scenario, if crumb rubber replacement percentage exceeds 20% by fine aggregates, it increases the adverse effect on concrete properties and 25% replacement of coarse aggregate by crumb rubber reduces 45% strength. This reason is adding rubber to concrete decreases its strength under static load and the ability of rubber to absorb the dynamic energy enhance the performance of concrete under impact loading. In general, the strength and energy absorption capability of crumb rubber concrete was better under impact loading than static loading sequentially dynamic fracture energy is higher than static fracture.