ANALISA KUAT TEKAN PAVING BLOCK DENGAN PEMANFAATAN SERBUK SEKAM PADI GRADASI HALUS

Abstract

Paving blocks are non-structural building materials made from a mixture of sand, cement, and water in various shapes. One innovation in paving block production is the utilization of agricultural waste, such as rice husk. Fine-graded rice husk powder is produced by grinding the outer husk of rice grains, which is typically used only as animal feed or fertilizer. The utilization of fine-graded rice husk powder aims to create environmentally friendly paving blocks with adequate resistance to compressive loads.The purpose of this study was to determine the effect of the utilization and classification of fine-graded rice husk powder on the compressive strength of paving blocks before and after the addition of rice husk powder at variations of 5%, 10%, and 15%. The research method employed was a quantitative approach with an experimental design conducted through compressive strength testing.The results showed that the compressive strength of paving blocks without the addition of fine-graded rice husk powder at the age of 28 days was 14.67 MPa. After the incorporation of fine-graded rice husk powder, the compressive strength at 28 days was 14.29 MPa for the 5% variation, 13.32 MPa for the 10% variation, and 12.57 MPa for the 15% variation. The findings indicate that increasing the percentage of fine-graded rice husk powder in the paving block mixture results in a decrease in compressive strength. Based on the classification results, paving blocks containing fine-graded rice husk powder are categorized as Grade C concrete blocks, with a minimum compressive strength of 12.57 MPa and an average compressive strength of 15.00 MPa