REINFORCED CONCRETE BEAM AT ULTIMATE LIMIT STATE CONSIDERING VARIABILITY IN THE CONCRETE MIX DESIGN PARAMETERS. FUDMA JOURNAL OF SCIENCES, [S. l.], v. 7, n. 1, p. 136–147, 2023. DOI: 10.33003/fjs-2023-0701-1265. Disponível em: https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/1265. Acesso em: 6 sep. 2025.