Dhabia Saad Muzahim, Dr. Alyaa Abbas Al-Attar. “Properties of Cement Mortar Incorporating Crumb Rubber in Varying Replacement Levels With Cementitious Material”. Design Engineering, no. 1 (June 29, 2022): 3609 - 3634. Accessed April 20, 2024. http://thedesignengineering.com/index.php/DE/article/view/9516.