S, D.; S, P. Experimental study on mechanical properties of concrete by adding bottle caps and pet bottles in concrete. International Research Journal of Multidisciplinary Technovation, [S. l.], v. 1, n. 6, p. 490–495, 2019. DOI: 10.34256/irjmtcon70. Disponível em: https://asianresassoc.org/journals/index.php/irjmt/article/view/276. Acesso em: 12 jun. 2026.