Zainal, S. H. and Ali, S. (2018) “Effect of Fly Ash And HDPE On Concrete Strength”, Politeknik & Kolej Komuniti Journal of Engineering and Technology. Putrajaya, Malaysia, 3(1), pp. 81–89. Available at: https://app.mypolycc.edu.my/journal/index.php/PMJET/article/view/522 (Accessed: 22 November 2024).