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, [S. l.], v. 6, n. 1, p. 22–34, 2024. DOI: 10.61186/JCER.6.1.22. Disponível em: http://www.journals-researchers.com/ojs/index.php/jcer/article/view/116. Acesso em: 5 sep. 2025.