The effect of steel and hybrid fibers on the impact resistance of concrete enclosed with FRP sheets. Journal of Civil Engineering Researchers, [S. l.], v. 4, n. 2, p. 41–45, 2022. DOI: 10.52547/JCER.4.2.41. Disponível em: http://www.journals-researchers.com/ojs/index.php/jcer/article/view/57. Acesso em: 5 sep. 2025.