ABSTRACT

Roller-competed concrete (RCC) is roller-compacted concrete that is quite stiff with zero slump. RCC pavement has several advantages because it is strong, dense, durable, and economical. The mixed materials used were water, coarse aggregate, fine aggregate, Portland Composite Cement (PCC), and superplasticizer (SPC). There were 12 cylindrical test specimens of diameter 15 cm and height 30 cm, with two variations of curing, namely plain water and sodium sulfate solution (Na2So4), and two variations of curing time, 14 and 28 days. The average compressive strength test value at 14 days of immersion in plain water and sodium sulfate solution is 37.35 MPa and 37.43 MPa. At 28 days of curing, the average compressive strength obtained soaked with plain water and sodium sulfate solution is 43.45 MPa and 54.02 MPa. Based on these results, the compressive strength of concrete cylinders immersed in sodium sulfate has increased compared to ordinary water immersion. The results of the overall compressive strength of the test specimens exceeded the plan compressive strength of 25 MPa, so the composition of the RCC mixture using PCC and SPC has the potential to be used as pavement material.