The influence of cement substitution with rice husk ash on high-strength concrete Satwarnirat, Dwina Archenita, Zikra Eldiswari, Silvianengsih and Rina Yuliet E3S Web Conf., 464 (2023) 09008 Published online: 18 December 2023 DOI: 10.1051/e3sconf/202346409008