Azlan, Nurul Isnani, Amalina Hanani Ismail, and Andri Kusbiantoro. “Strength Development of Geopolymer Concrete Containing Palm Oil Clinker Powder”. Progress in Engineering Application and Technology 3, no. 1 (June 19, 2022): 351–358. Accessed March 12, 2026. https://penerbit.uthm.edu.my/periodicals/index.php/peat/article/view/6276.