Alsadey, Salahaldein. “Effect of Polypropylene Fiber Reinforced on Properties of Concrete”. Journal of Advance Research in Mechanical and Civil Engineering (ISSN: 2208-2379), vol. 3, no. 4, Apr. 2016, pp. 09-12, https://doi.org/10.53555/nnmce.v3i4.318.