Hasan, Arsalan, Nyazi Maroof, and Yassin Ibrahim. “Effects of Polypropylene Fiber Content on Strength and Workability Properties of Concrete”. Polytechnic Journal 9, no. 1 (April 10, 2019): 7-12. Accessed May 16, 2024. https://journals.epu.edu.iq/index.php/polytechnic/article/view/3.