Al-Tuwayyij, Husham, and Saad Issa Sarsam. “Influence of Iron-Filings on Marshall and Volumetric Properties of Asphalt Concrete”. Civil Engineering Journal 6, no. 9 (September 1, 2020): 1684–1696. Accessed June 27, 2025. https://www.civilejournal.org/index.php/cej/article/view/2359.