Use of Waste Tire Rubber as a Partial Replacement of Aggregate in Concrete

Abstract

The waste problem considered as one of the most crucial problems facing the world as a source of the environmental pollution. This pollution also includes the waste tire which is discarded after their use. These waste tires are stockpiled every year in large quantity and can be used by mosquitos for breeding. It is suggested that these waste tire can be used as additive in concrete which would partially help in solving this problem. This research is exploring the use of waste tire rubber in concrete mixes. A mix of M20 is designed different concrete specimens were fabricated and tested in uniaxial compression and splitting tensile strength. The waste tire rubber was shredded in size of 20 mm were substituted into the concrete mix in percentages of 0% (control) 6%12% 18%. Results show that mechanical properties of concrete made with rubber aggregate are mate nearly equal as compared with concrete mix made with the traditional material. Also, the test results show that even though the compressive strength is reduced when using crumb rubber the reduction is minimal. Moreover, splitting tensile tests show that concrete mixtures with 6% rubber aggregate content have better toughness than the 12% & 18 % mixture. This mechanical property mix indicates an excellent potential application of modified concrete mix in structures that absorb large amounts of energy. On the contrary, the density of mixtures fabricated was not significantly affected. These studies will suggest a safe and environmentally consistent method of disposal of tire waste material.