Md Esak, Nuraisyah Amirah, and Sallehuddin Shah Ayop. “Crack Behaviour of Polypropylene Fiber Reinforced Concrete”. Recent Trends in Civil Engineering and Built Environment, vol. 6, no. 2, Feb. 2026, pp. 117-2, https://penerbit.uthm.edu.my/periodicals/index.php/rtcebe/article/view/15200.