A. F. Abdul Manaf, S. . Shahidan, and N. Mohd Yusof, “Effect on Thermal Conductivity of Concrete Containing Recycled Polyethylene Terephthalate (PET)”, ijscet, vol. 15, no. 3, pp. 157–167, Dec. 2024, Accessed: Aug. 12, 2026. [Online]. Available: https://journal.uthm.edu.my/index.php/IJSCET/article/view/17031