ABSTRACT

The number of scrap tyres is growing all around the world due to increasing number of vehicles. This creates significant environmental and economic concerns. Recycling and reusing scrap tyres in engineering projects is an alternative way to deal with these concerns. Recycled tyres are commonly mixed with soils in different proportions. This paper presents a series of laboratory experiments on sand-rubber mixtures (tested with seven different volumetric rubber fractions ranging from 0% (pure sand) to 100% (pure rubber)) under one-dimensional cyclic loading at different stress levels. It is aimed to investigate the behaviour and response of mixture with increasing rubber fraction under different cycle loads. The results indicate that one-dimensional characteristics of mixtures depends on rubber fraction. The applied cycle load also affects the response of mixtures. The results of cyclic oedometer tests were analysed and the effect of applied vertical stress on the remanent deformation were discussed.