Tran Thi L, Nguyen Anh D, Phan Luu A, Tran Thi M. Use fly ash for the production of lightweight building materials. Vietnam J. Earth Sci. [Internet]. 2021 Jun. 25 [cited 2024 Nov. 22];43(3):323-35. Available from: https://vjs.ac.vn/index.php/jse/article/view/16204