A. F. Azahar and N. K. . A. Rahman, “A Study on Properties of Concrete as a Potential Innovative of Coarse Aggregate with Coconut Shell”, peat, vol. 2, no. 1, pp. 361–372, Jun. 2021, Accessed: May 05, 2024. [Online]. Available: https://publisher.uthm.edu.my/periodicals/index.php/peat/article/view/768