A. Lim, M. L. . Ahmad Jeni, and H. Kosnin, “Recycled Paper Sludge (RPS) as Partially Replacement Material for Sand in Concrete”, peat, vol. 4, no. 2, pp. 720–726, Dec. 2023, Accessed: May 20, 2024. [Online]. Available: https://publisher.uthm.edu.my/periodicals/index.php/peat/article/view/10356