INFLUENCE OF ORIENTATION AND SIZE OF VOIDS ON CONCRETE CUBE STRENGTH. Nigerian Journal of Technology, [S. l.], v. 19, n. 1, p. 29–39, 2003. DOI: 10.4314/njt.191.440. Disponível em: https://nijotech.com/index.php/nijotech/article/view/440. Acesso em: 16 apr. 2026.