PERFORMANCE OF BLACK OLIVE OIL AS PERMEABILITY REDUCING ADMIXTURE IN CONCRETE: permeability reducing admixtures. Nigerian Journal of Technology, [S. l.], v. 42, n. 1, p. 46–54, 2023. DOI: 10.4314/njt.v42i1.6. Disponível em: https://nijotech.com/index.php/nijotech/article/view/3039. Acesso em: 16 apr. 2026.