MODELLING AND OPTIMISATION OF PROPERTIES OF HARDENED  CALCINED CLAY-CALCIUM CARBIDE WASTE-BASED MORTAR USING RESPONSE SURFACE METHODOLOGY. Nigerian Journal of Technology, [S. l.], v. 45, n. 2, p. 307–319, 2026. DOI: 10.67358/njt.2026.6319. Disponível em: https://nijotech.com/index.php/nijotech/article/view/6319. Acesso em: 18 jun. 2026.