Potential of Coconut Shell Replacement as Coarse Aggregate in Hot Mix Asphalt

The aim of this study was to determine the appropriateness of using coconut shells to replace the coarse aggregate size of 10 mm. This study was conducted with a sample of control and also samples of the mixture in the percentage of 10, 20, 30, and 40% of the weight of aggregate following PWD Specification. Various experiments were conducted to test the robustness and suitability of coconut shells to replace aggregates in flexible pavement. The tests performed follow Superpave mix design tests, and for the performance test, indirect tensile modulus, dynamic creep and static creep were conducted. Based on the test conducted, the coconut shells found can serve as substitution for aggregate at less than 10% of the aggregate total weight for the size 10 mm. The use of coconut shell in this study was to save the costs, as the cost of aggregate now rising and coconut shell material is easily available.