Patah, Dahlia, and Amry Dasar. “Strength Performance of Concrete Using Rice Husk Ash (RHA) As Supplementary Cementitious Material (SCM)”. Journal of the Civil Engineering Forum 8, no. 3 (July 28, 2022): 261-276. Accessed July 18, 2024. https://journal.ugm.ac.id/v3/JCEF/article/view/3488.