MODELLING AND OPTIMISATION OF PROPERTIES OF HARDENED  CALCINED CLAY-CALCIUM CARBIDE WASTE-BASED MORTAR USING RESPONSE SURFACE METHODOLOGY. NIJOTECH [Internet]. 2026 Jun. 17 [cited 2026 Jun. 18];45(2):307-19. Available from: https://nijotech.com/index.php/nijotech/article/view/6319