ISMAIL, I.; OCHOLI, A.; BASHIR, J. O. Effect of Coconut Shell Aggregate on Shrinkage Cracking in Concrete using Modified Ring Test. Direct Research Journal of Engineering and Information Technology, [S. l.], v. 13, n. 3, p. 70–78, 2025. Disponível em: https://journals.directresearchpublisher.org/index.php/drjeit/article/view/519. Acesso em: 24 may. 2026.