MEPS used for the test in form of 0.5 cm3 and mixed with river sand at a 5, 10, 15, and 20 % by weight. The production of MEPS was prepared by heat treatment as shown in Fig. 1. The optimum time and temperature was 15 min and 130 C respectively. Sand used for the test was rounded sand with Cu = 7.83 and Cc = 1. According to unified soil classification system it was classified as well graded sand (SW). Sieve analysis result is show in Fig. 2.