Boontositrakul , Kittiphan, Kittipong Suweero, and Pramot Weeranukul. “Using Cassava Pit Waste As Light Weight Aggregate for Hollow Load Bearing Concrete Masonry Mixed With Rice Husk Ash Product”. Journal of Engineering, RMUTT 18, no. 1 (June 26, 2020): 13–22. Accessed April 20, 2024. https://ph01.tci-thaijo.org/index.php/jermutt/article/view/241879.