Use of Waste Tyre in Concrete

Abstract

Abstract: Waste tyre rubber disposal has become a major environmental concern in all parts of the world, posing a serious threat to the environment. One potential application for scrap tyre rubber is to mix it into concrete to replace some of the natural material. Every year, an estimated 1000 million tyres reach the end of their useful lives, with another 5000 million predicted to be thrown on a regular basis by 2030. Currently, only a small portion is recycled, and millions of tyres are just stacked, landfilled, or buried. This not only reduces pollution caused by waste tyres, but it also reduces the usage of conventional aggregate, which is limited in supply.As per the mix design specifications, the rubber pieces (rubber aggregate) were sieved through a 25 mm sieve and held at a 20 mm sieve before being added to the concrete mix at 3.5,5.5,7.5 percent by weight of the aggregate. This study investigates the beneficial impact of waste tyre rubber particles on several concrete characteristics. The used rubber scraps are obtained through the mechanical trituration of used tyres from automobiles and trucks. They have long been researched for resource reutilization as an aggregate in concrete, resulting in the 'Rubcrete mix,' which may be easily used in a variety of applications with promising results. Rubcrete produces a finished product with good mechanical qualities and also represents an efficient and cost-effective method of recycling waste tyres. The purpose of this paper is to report the findings of an experimental examination into the ideal types and quantities of aggregates in concrete mixtures for engineering purposes. The following parameters were investigated: density of rubber aggregates, workability, air entrapment, and compressive strength. In rubberized concrete mixtures, three types of rubber particles (ash rubber, crumb rubber, and tyre) were utilised to partially or totally replace natural aggregates.