“COMBINED EFFECT OF RICE HUSK ASH AND CEMENT KILN DUST AS CEMENT REPLACEMENT MATERIALS IN CONCRETE” (2020) FUDMA JOURNAL OF SCIENCES, 4(1), pp. 446–452. Available at: http://www.fjsadmin.fudutsinma.edu.ng/index.php/fjs/article/view/66 (Accessed: 12 September 2025).