Improvement of Low Compressible Clays Using Crumb Rubber

In India, around 50% of land is prone to earthquakes with huge economic loss annually. In order to reduce impact of earthquake on structures, “rubber–soil mixture” method has been developed. Incorporating rubber into soil in various proportions acts as an effective seismic shock absorber and provides strength, firmness to foundation soil. It also reduces settlement of footing. Recycled tyres are shredded into fragments and are added to soil. This method is economical and eco-friendly. Addition of rubber to soil can reduce linear and lateral shaking of structure significantly. In this paper, various strength parameters of rubber–soil mixture like UCS, CBR-soaked and unsoaked, compaction, Atterberg limits, etc. have been studied by conducting laboratory experiments. 1–2 mm sized rubber crumbs in varying proportions 0–5% are used. The main aim of this paper is to study how the addition of rubber crumbs in various proportions to the soil can affect bearing resistance and strength of foundation soil.