Mohd Sani, M. S. H., Muftah, F., & Muda, Z. (2011). The Properties of Special Concrete Using Washed Bottom Ash (WBA) as Partial Sand Replacement. International Journal of Sustainable Construction Engineering and Technology, 1(2), 65-76. Retrieved from https://publisher.uthm.edu.my/ojs/index.php/IJSCET/article/view/64