“Compressive Strength of Metakaolin Geopolymer Concrete Incorporating Palm Kernel Shell as Lightweight Coarse Aggregate *”, Environmental Technology & Science Journal, vol. 17, no. 1, pp. 112–120, May 2026, Accessed: Jun. 08, 2026. [Online]. Available: https://journal.futminna.edu.ng/index.php/etsj/article/view/242