Mahdi Oleiwi, Safie. “Compressive Strength of Mortar With Partial Replacement of Cement by Fly Ash and GGBFS”. Diyala Journal of Engineering Sciences 14, no. 4 (December 6, 2021): 147–156. Accessed May 19, 2024. https://djes.info/index.php/djes/article/view/921.