Pisut Rodvinij, and Chotikan Ratchakrom. “EFFECT OF CEMENT REPLACEMENT BY FLY ASH AND FGD GYPSUM ON STRENGTH OF SUBBASE”. GEOMATE Journal 20, no. 80 (April 25, 2021): 9–16. Accessed April 24, 2024. https://geomatejournal.com/geomate/article/view/282.