Utilization Of Agricultural Waste Coconut Shell Partial Replacement with Cement and Coarse Aggregate

This study demonstrates the feasibility of using coconut shell ash (CSA) and crushed coconut shell (CSC) as partial replacement materials in concrete production. The experimental results confirm that a 10% replacement level is optimal for achieving enhanced compressive strength and overall performance. At this level, the concrete not only meets but exceeds the strength requirements of conventional M20 grade concrete, reaching a maximum compressive strength of 31.83 N/mm² at 28 days. Additionally, the use of coconut shell materials contributes to the production of lightweight concrete, which can be advantageous in reducing structural load. From an environmental perspective, this approach significantly reduces dependence on cement and natural aggregates, thereby lowering carbon emissions and conserving natural resources. It also provides an effective solution for managing agricultural waste, promoting sustainable construction practices. However, replacement levels beyond 10% negatively impact strength due to increased porosity and reduced bonding capacity. The strong correlation between experimental and ANSYS simulation results further supports the reliability of the study. In conclusion, the incorporation of coconut shell derivatives in concrete offers a cost-effective, eco-friendly, and sustainable alternative for modern construction, making it suitable for both structural and non-structural applications.

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