Investigation of Backfill Compaction Effect on Buried Concrete Pipes. Journal of Engineering, [S. l.], v. 19, n. 02, p. 180–196, 2013. DOI: 10.31026/j.eng.2013.02.02. Disponível em: https://joe.uobaghdad.edu.iq/index.php/main/article/view/2059. Acesso em: 14 mar. 2025.