The use of paper sludge as a self-curing agent in concrete - Experimental laboratory-based comparative study. SJ Engineering Africa, [S. l.], v. 3, n. 2, p. 10, 2026. DOI: 10.51168/1rcdnj24. Disponível em: https://engineering.sjpublisher.org/index.php/eng/article/view/13. Acesso em: 15 apr. 2026.