Effect of adding used tire aggregates on the mechanical behaviour of a clay

Abstract

Several techniques in civil engineering, combining waste with soil, are known in the world. Waste tires are bulky, polluting and non-biodegradable waste. The association of these wastes with coherent soils can give efficient materials and solve several problems encountered by the engineer in the geotechnical sector. The objective of our study is to evaluate the effect of adding used tire aggregates on the mechanical behaviour of a clay. After the different materials are sieved, the prepared samples are then submitted to identification and mechanical tests, mainly: shear tests. In addition to the environmental benefit of the approach proposed in this study, the creation of a new application that allows to absorb a quantity of rubbery waste, the results obtained show that the addition of rubber aggregates to a clay soil, allows to improve the characteristics according to the different percentages of addition and the parameters of shear strength, by decreasing the cohesion and increasing the angle of internal friction.