Sugarcane bagasse ash-portland composite cement blended in paving blocks production for effective resource utilization between sugar and construction industries

This study examines the compressive strength and water absorption of sugarcane bagasse ash, an ingredient in the manufacture of paving blocks. The technique employed was lab experiment printouts that were 20 10 8 cm in size. In this investigation, the addition variations consisted of 2.5%, 5.0%, 7.5%, 10.0%. In this investigation, test ages of 3, 7, 14, 21, and 28 days were used, using a cement to sands ratio of 1:4. Using SNI-03-0691-1996 with reference to paving blocks. According to an analysis of the compressive strength test results at 28 days, the addition of 2.5% bagasse ash of 23.64 MPa produced the highest compressive strength, and the addition of 7.5% bagasse ash with of 18.43 MPa produced the lowest compressive strength. The test specimens with the addition of 10% bagasse ash showed the highest water absorption in the 28-days of 6.57%; in contrast, the test specimens with the addition of 2.5% bagasse ash showed the lowest water absorption of 3.27%. Any variation of the mixture that has samples that are 28 days and have a water absorption value of up to 6% meets the requirements of SNI-03-0691-1996 paving block quality B.