L. Y. Loon, A. M. Ahmad Zaidi, K. H. Boon, S. Sulaiman, S. H. Adnan, and I. Rahman, “Carbonation and Water Permeability of Foamed Concrete”, ijscet, vol. 1, no. 1, pp. 33–46, May 2011, Accessed: May 01, 2024. [Online]. Available: https://penerbit.uthm.edu.my/ojs/index.php/IJSCET/article/view/48