Fauzi MA, Arshad MF, Md Nor N, Kiai S. Properties of Controlled Low-Strength Material Mixes Made from Wastepaper Sludge Ash and Recycled Fine Aggregate. IJIE. 2021;13(7):136-146. Accessed April 8, 2026. https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/9537