Mansyur, ., M. Tumpu, and Parea R. Rangan. “Silica Quartz Characteristics from Local Silica Sand on Compressive Strength of Mortar”. Civil Engineering Journal 10, no. 8 (August 1, 2024): 2588–2600. Accessed June 27, 2025. https://www.civilejournal.org/index.php/cej/article/view/4781.