Efektivitas Penggunaan Consol P200-R1 S Sebagai High Range Water Reducer (HRWR) Pada Campuran Beton Dengan Variasi Kadar Air

This study aims to analyze the effectiveness of using the High Range Water Reducer (HRWR) additive Consol P200-R1 S in concrete mixtures with water content variations on slump value, unit weight, and compressive strength. A laboratory experimental method was conducted using a fixed dosage of 0.8% Consol P200-R1 S by weight of cement, with water reduction variations of 0%, 30%, 40%, and 50%, alongside normal concrete as a control. Cylindrical specimens (15 cm x 30 cm) were tested for compressive strength at 1, 3, and 28 days according to SNI standards. The results showed that the highest slump flow was achieved by the mixture with 0.8% Consol without water reduction (430 mm). All variations met normal-weight concrete criteria, with unit weights ranging from 2,278 to 2,395 kg/m³. At 28 days, adding 0.8% Consol without water reduction decreased compressive strength to 14.88 MPa compared to normal concrete (20.43 MPa). However, combining 0.8% Consol with water reduction significantly increased compressive strength, reaching a peak of 40.13 MPa at 50% water reduction. This study concludes that Consol P200-R1 S effectively enhances concrete compressive strength when combined with optimal water reduction.