“Study the strength properties of fiber reinforced concrete by using nano silica and ultra fine fly ash”. International Journal of Advance Engineering and Research Development (IJAERD), [S. l.], v. 8, n. 5, p. 23–28, 2021. Disponível em: https://www.ijaerd.org/index.php/IJAERD/article/view/4684. Acesso em: 7 aug. 2025.