Purbasari, Aprilina, Tjokorde Walmiki Samadhi, and Yazid Bindar. “Sulfuric Acid Resistance of Geopolymer Mortars from Co-Combustion Residuals of Bamboo and Kaolin”. ASEAN Journal of Chemical Engineering 18, no. 2 (December 31, 2018): 22-30. Accessed July 17, 2024. https://journal.ugm.ac.id/v3/AJChE/article/view/9021.