چكيده به لاتين
Recently, as a new type of artificial lightweight fill material, the application of Expanded polystyrene (EPS) beads mixed with soil and cement is considered in terms of a novel solution in geotechnical practices. Hence, it is necessary to adopt an exhaustive procedure for evaluating the EPS composite attributes. In this study, to analyze the link between strength and dynamic properties, unconfined compression tests were examined to investigate mechanical features as well as determine the optimum scope for EPS, cement, and water content utilized in the strain-control cyclic experiments. The influence of various mixing ratios, confining pressure, strain level, and development of modulus reduction curves were discussed through cyclic triaxial tests. Laboratory results indicated that increasing cement content in the range of 4-6% beside EPS beads up to 10% in volume, leads to a remarkable enhance in UC value and shear modulus in the case of higher strain level. Meanwhile, the damping ratio undergoes a weak variation due to the cementation process, indicating more dependency on cement percentage than EPS beads.
