Kareem, Sondos, and Shaimaa Fadhil. “Improving The Engineering Properties of Expansive Clayey Soil by Adding Biopolymer: A Review”. Al-Rafidain Journal of Engineering Sciences 2, no. 2 (August 10, 2024): 138–154. Accessed May 1, 2026. https://rjes.iq/index.php/rjes/article/view/81.