Investigating the Potential of Water Treatment Sludge for Improvement of the Geotechnical Properties of Gypseous Soil. Tikrit j. eng. sci. [Internet]. 2024 Jul. 16 [cited 2026 Sep. 9];31(3):80-92. Available from: https://www.tj-es.com/ojs/index.php/tjes/article/view/1381