Abbas, B. A., Abubakar, J., Sulaimon N. A., Abdul, M. T., Okafor, A., and Ndaiji, A. U. “Experimental Study on Workability of Natural Aggregate Concrete Incorporated With Crumb Rubber”. Engineering And Technology Journal 9, no. 2 (February 28, 2024): 3552–3557. Accessed July 22, 2024. https://everant.org/index.php/etj/article/view/1214.