Pengaruh Penggunaan Batu Kapur dari Wilayah Sampung Kabupaten Ponorogo Sebagai Pengganti Agregat Kasar Terhadap Kuat Tekan Beton

Ponorogo, renowned for its abundant mineral resources such as limestone, presents an opportunity to utilize this material as a substitute for coarse aggregate in concrete mixtures. This research investigated the impact of replacing coarse aggregate with Sampung limestone at concentrations of 0%, 25%, 50%, 75%, and 100%. Following the Department of Environment (DoE) method and referencing SNI 03-2834-2000 for concrete mix design, 28-day compressive strength tests yielded results of 14.35 MPa for 0% limestone, 12.96 MPa for 25%, 14.35 MPa for 50%, 12.03 MPa for 75%, and 10.65 MPa for 100%. Remarkably, the findings indicate that the 50% limestone mixture achieved the most optimal compressive strength.