Wadeng, Muhamadrisuwan, Eruwan Romoh, and Jeerayut Nukrohwat. “Compressive Strength and Water Absorption of Fly Ash Based Geopolymer Containing Para Wood Ash”. PNU Journal of Applied Science, Engineering & Technology 4, no. 1 (December 29, 2025): 21–31. accessed October 11, 2026. https://ph05.tci-thaijo.org/index.php/JASET/article/view/319.