N. Ibrahim and H. A. Muhammad Rashidi, “Interlocking Bricks: Density and Compressive Strength Reduction Due to Addition of Kaolin Clay and RHA”, IJIE, vol. 15, no. 2, pp. 61–69, Jul. 2023, Accessed: Apr. 08, 2026. [Online]. Available: https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/13510