Muralia Hustim, Purwanto, S. L. S. R. I. (2021) “Study of Compressive Strength and Durability of Fly Ash and Trass Based Geopolymer Mortar”, Design Engineering, pp. 9246-9260. Available at: http://thedesignengineering.com/index.php/DE/article/view/5969 (Accessed: 29April2024).