Kushartomo, Widodo, Henny Wiyanto, and Daniel Christianto. 2021. “INCREASING THE CALCIUM SILICATE HYDRATE AMOUNT IN REACTIVE POWDER CONCRETE USING MARBLE POWDER”. Spektra: Jurnal Fisika Dan Aplikasinya 6 (1), 25 - 36. https://doi.org/10.21009/SPEKTRA.061.04.