EXPERIMENTAL STUDY ON STRENGTH OF GEOCOMPOSITE WALL FROM LIME STABILIZED CLAY ACTIVATED BY ALKALINE AND EXPANDED POLYSTERENE (EPS)

Industrial plastic waste such as expanded polystyrene is very difficult to decompose naturally, this will have a global environmental impact. Large amount of Expanded Polystyrene (EPS) industrial waste is a major problem in environmental pollution. This study aims to make a geocomposite wall panel consisting of a mixture of clay, activator and expanded polystyrene (EPS) and to determine the physical and mechanical properties as well as the flexural strength capacity of the clay geocomposite panel. This research is focused on the development of soil composites made by mixing shaved EPS with quicklime stabilization clay soil activation of resin and iron oxide with the Static Compaction Method based on volume ratios. EPS content of 40%, 50%, and 60%. Activator 20% for dry bulk weight and optimum moisture content. The material performance was analyzed by testing the composite material which included the flexural strength. Results show addition of EPS makes the flexural strength value decrease because the addition of EPS reduces the density value so that the stiffness of the soil decreases even though there is an activator.