MUHAMMAD IRWANSYAH; DWI MAHARANI. Flexural and Microstructural Behavior of Reinforced Concrete Beams Using River and Beach Sand Aggregates. Nucleus Journal, [S. l.], v. 5, n. 1, p. 199–218, 2026. DOI: 10.32492/nucleus.v5i1.5115. Disponível em: https://ejournal.undar.or.id/index.php/Nucleus/article/view/1497. Acesso em: 25 jun. 2026.