EFFECT OF LOCALLY SOURCED NIGERIAN GYPSUM ON THE STRENGTH AND MICROSTRUCTURE OF PORTLAND CEMENT MORTAR. Nigerian Journal of Technology, [S. l.], v. 39, n. 4, p. 1001–1010, 2020. Disponível em: https://nijotech.com/index.php/nijotech/article/view/2436. Acesso em: 19 apr. 2026.