STUDY INTO THE DRAIN DOWN CHARACTERISTIC OF SMA CONCRETE USING SANDSTONE AS MINERAL FILLER. FUDMA JOURNAL OF SCIENCES, [S. l.], v. 4, n. 1, p. 250–260, 2020. Disponível em: http://www.fjsadmin.fudutsinma.edu.ng/index.php/fjs/article/view/45. Acesso em: 11 sep. 2025.