MEKONNEN, Zelealem; SAHILE, Fiseha; NIGUSSIE, Tariku. Mechanical and Microstructural Performance of Concrete Incorporating River and Quarry Sand. Ethiopian Journal of Engineering and Technology, Ethiopia, v. 5, n. 1, p. 43–64, 2026. DOI: 10.82127/ejet.v5i1.2154. Disponível em: https://journals.hu.edu.et/hu-journals/index.php/ejet/article/view/2154.. Acesso em: 20 may. 2026.