Syammaun T, Isya M, Mahmud A, Husaini. Characterization of Air Voids and Permeability in Porous Asphalt Mixtures with Eggshell Ash as an Eco-Friendly Additive. ijie [Internet]. 2024 Aug. 12 [cited 2024 Sep. 16];16(4):56-63. Available from: https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/16253