Increasing the Compressive Strength of Concrete Using PPC

Cement factories in Indonesia rarely produce OPC due to the high cost of production and less environmentally friendly, so they prefer to produce PPC or PCC. Cement factories located in areas that are rich in natural pozzolan will prefer producing PPC. In general, there is an assumption that increasing the compressive strength of concrete using PPC is slow at the early age. Based on these assumptions, it is necessary to conduct research on increasing the compressive strength of concrete using PPC at an early age. The specimen used was a concrete cylinder, with 3 specimens for each variation. The compressive strength test of concrete is carried out at the ages of: 3, 7, 14, 21, and 28 days. From the research results obtained, compressive strength of concrete has increased with increasing age of the concrete. The increasing the compressive strength of concrete using PPC is comparable with concrete using OPC. The unit weight of concrete is almost the same for all ages of concrete.