Newman, Aidan, Nuradila Izzaty Halim, Muhd Norhasri Muhd Sidek, Hamidah Mohd Saman, and Anizahyati Alisibramulisi. “Enhancement of High Strength Concrete Performance By Utilising Nano Waste Paper Sludge Ash”. Scientific Research Journal 18, no. 2 (August 27, 2021): 89–101. Accessed October 5, 2024. https://journal.uitm.edu.my/ojs/index.php/SRJ/article/view/3041.