“Evaluation of Geopolymer Concrete Based on Fly Ash Containing Steel Fibers and Rubber Crumbs Using Cement As a Partial Substitute for Fly Ash”. Journal of Civil Engineering Researchers 6, no. 1 (March 28, 2024): 22–34. Accessed September 5, 2025. http://www.journals-researchers.com/ojs/index.php/jcer/article/view/116.