Boontositrakul , K., Suweero , K., & Weeranukul , P. (2020). Using Cassava Pit Waste as Light Weight Aggregate for Hollow Load Bearing Concrete Masonry Mixed with Rice Husk Ash Product. Frontiers in Engineering Innovation Research, 18(1), 13–22. retrieved from https://ph01.tci-thaijo.org/index.php/jermutt/article/view/241879