Development of Hybrid Composite Rice Husk Ash (RHA)–Geopolymer for Bricks Bearing BuildingsAndi Ikhsan Maulana, Nurul Kusuma Wardani, D Syamsidar, Ariani, Nurfadilla and SubaerMATEC Web Conf., 97 (2017) 01009DOI: https://doi.org/10.1051/matecconf/20179701009