“LABORATORY TESTS FOR CHARACTERIZATION OF ROAD EMBANKMENT LAYERS THROUGH BLENDED SAND GRAVEL MIX PROPORTIONS MATERIALS”. The Tanzania Engineer - Journal of the Institution of Engineers Tanzania 20, no. 2 (December 31, 2025): 30–44. Accessed May 28, 2026. https://iet-journal.or.tz/index.php/ttejiet/article/view/17.