Dhabia Saad Muzahim, Dr. Alyaa Abbas Al-Attar. 2022. “Properties of Cement Mortar Incorporating Crumb Rubber in Varying Replacement Levels With Cementitious Material”. Design Engineering, no. 1 (June), 3609 -34. http://thedesignengineering.com/index.php/DE/article/view/9516.