Bobanto MD, Pandara DP, Ferdy F, Tiwow VA, Aritonang H, Tanauma A, et al. Effect of Calcination on the Ash from Lokon Volcano and Its Potentially Sustainable Binder Material. Int. J. Adv. Sci. Eng. Inf. Technol. [Internet]. 2023 Dec. 31 [cited 2024 Aug. 24];13(6):2067-72. Available from: https://ijaseit.insightsociety.org/index.php/ijaseit/article/view/18900