Mekonnen Z, Sahile F, Nigussie T. Mechanical and Microstructural Performance of Concrete Incorporating River and Quarry Sand. EJET [Internet]. 2026 Mar. 20 [cited 2026 May 20];5(1):43-64. Available from: https://journals.hu.edu.et/hu-journals/index.php/ejet/article/view/2154