“EFFECT OF POLYPROPYLENE FIBER ON PROPERTIES OF GEOPOLYMER CONCRETE BASED METAKOLIN”. Journal of Engineering and Sustainable Development 25, no. 2 (March 1, 2021): 58–67. Accessed May 15, 2024. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/67.