TY - JOUR AU - Agawit Thaothip, AU - Warat Kongkitkul, PY - 2016/11/28 Y2 - 2024/03/29 TI - STRENGTH AND DEFORMATION CHARACTERISTICS OF EPS BEAD-MIXED SAND JF - GEOMATE Journal JA - INTERNATIONAL JOURNAL OF GEOMATE VL - 13 IS - 35 SE - Articles DO - UR - https://geomatejournal.com/geomate/article/view/1259 SP - 8-15 AB - <p>In this research, a study on strength and deformation characteristics of expanded polystyrene<br>(EPS) bead-mixed sand was comprehensively conducted. A series of standard Proctor compaction tests were<br>conducted to determine the proper amount water for use in the mixing between EPS bead and sand at the<br>volumetric ratio of 1:1. A special series of drained triaxial compression tests were performed on the sand-EPS<br>bead mixture (SEM) specimens. Various loading histories, consisting of: i) monotonic loading (ML) at<br>different constant strain rates; ii) sustained (creep) loading (SL); iii) cyclic loading with small strain-amplitude<br>(CL); and iv) stepwise changes in the strain rate during otherwise ML, were employed in this study. These<br>loading histories were used to evaluate the elastic and viscous properties of the SEM. Then these properties<br>were also compared with the ones obtained from the sand alone under similar loading conditions. It is found<br>that the elastic and viscous properties of the SEM are qualitatively similar to those of sand alone. They are<br>different in terms of quantity. A non-linear three-component (NTC) model was used to simulate the elastoviscoplastic deformations of the SEM. The simulations are well successful by using the model parameters<br>determined especially for the SEM sand under the conventional model framework.<br><br></p> ER -