Proceedings of DFI-India 2017: 7th Conference on Deep Foundation Technologies for Infrastructure Development in India, (DFI)
Evaluation of Engineering Properties of Expansive Soils Mixed with Waste EPS Beads
Soundara B., Associate Professor, Suganya A., Assistant Professor and Selvakumar S., Research Fellow
Expansive soils have a potential for shrinkage or swelling under changing moisture content. Attempts were made to reduce the swelling potential of expansive soils with conventional additives such as lime, cement, etc. and non-conventional additives such as industrial wastes. In this research an attempt is made to study the feasibility of using granulated waste expanded polystyrene (EPS) as an additive to expansive soil to control swelling. To investigate the effect of mixing waste EPS granules with expansive clays, three expansive soils with different plasticity index were manufactured in the laboratory by mixing sand with sodium bentonite of various proportions. A series of standard proctor test, California bearing ratio (CBR) test, one dimensional free swell and swell pressure tests were performed on these soils.Test results show that the inclusion of EPS granules significantly reduces the percent swell and swelling pressure when subjected to one-dimensional free swell conditions. The dry density and CBR values decrease with increase in EPS content and increased plasticity of the soil.
|article #2754; publication #1035 (India2017)|