Effect of Sisal and Steel Fibers on the Properties of Lightweight Concrete. NTU Journal of Engineering and Technology, [S. l.], v. 5, n. 1, p. 192–201, 2026. DOI: 10.56286/mwk1vg72. Disponível em: https://journals.ntu.edu.iq/index.php/NTU-JET/article/view/2064.. Acesso em: 9 mar. 2026.