An insightful review on the utilizing crumb rubber as partial substitute to aggregates in concrete

Abstract. This paper investigated and identified the properties of concrete containing recycled crumb rubber. Scrap rubber tires are one of the solid wastes in the world after revolutionary in the automobile sector. Disposal of scrap tires is a challenging task because the tires have a long life and are biodegradable. Crumb rubber is a recycled rubber from scrap tires of vehicles, which can be used by partially replacing fine aggregates in concrete. Partial replacement of crumb rubber i.e., 5% to 40% volume of fine aggregates were explained by so many authors in their research papers. Different tests are done by these authors to find the properties of different grades i.e., M20, M25, M30, etc. of crumb rubber concrete. The crumb rubber was reported to reduce the mechanical strength of concrete. On the contrary, some advantages of adding crumb rubber as aggregate to concrete is enhancement in the deformation properties of the concrete. Therefore, for effective utilization of crumb rubber in concrete, there is need to develop some methods of mitigating the loss in strengths in the concrete with addition of crumb rubber.