Utilization of palm kernel shell ash as stabilization materials for clay to settlement consolidation

Abstract

Consolidation is a change in soil volume at the time of loading due to pore pressure dissipation. The consolidation parameter is a parameter that determines the consolidation process and magnitude of the settlement consolidation in soil. The process of consolidation in clay takes a long time and the settlement consolidation that occurs is relatively large, so it is necessary to improve soil stability on clay. Palm kernel shell ash is used in this research to enhance clay stability. Clay was mixed with palm kernel shell ash with varying levels of 5%, 10%, and 15% of the soil the dry weight. The Consolidation test was carried out on a mixture of clay and palm kernel shell ash to obtain consolidation parameters like the values of consolidation coefficient (Cv), compression index (Cc), and settlement of consolidation (Sc). The results of this research showed that the consolidation coefficient value increased with increasing levels of palm kernel shell ash. The Compression index and settlement of consolidation decreases with increasing levels of palm kernel shell ash. Base on the research, it can be concluded that the addition of palm shell ash to clay can accelerate the process of consolidation and reduce the value of settlement of consolidation.