MODEL FOR PREDICTING MIX FORMULATION IN THE PRODUCTION OF INSULATING REFRACTORY BRICKS USING NIGERIAN FIRE-CLAYS AND COCONUT SHELL. Nigerian Journal of Technology, [S. l.], v. 38, n. 3, p. 654–659, 2019. Disponível em: https://www.nijotech.com/index.php/nijotech/article/view/2055. Acesso em: 14 may. 2026.