Durability Performance of Corn Cob Ash–Coconut Shell Ash Concrete Exposed to Simulated Oil Refinery Wastewater. Journal of Civil Engineering Frontiers, [S. l.], v. 6, n. 02, p. 58–69, 2025. DOI: 10.38094/jocef602118. Disponível em: https://www.jocivilef.org/index.php/jocef/article/view/118. Acesso em: 29 jan. 2026.