Study of using Coal Fly Ash (CFA) and Rice Husk Ash (RHA) on the Compressive Strength of Geopolymer ConcreteAndiensa Hana Insyira, Yureana Wijayanti, Oki Setyandito, Dian Pratama Putra, Nugroho Adi Soekotjo, Ernie Sasongko and Martin AndaE3S Web Conf., 426 (2023) 01011DOI: https://doi.org/10.1051/e3sconf/202342601011