Compressive Strength of Metakaolin Geopolymer Concrete Incorporating Palm Kernel Shell as Lightweight Coarse Aggregate *. Environmental Technology & Science Journal, [S. l.], v. 17, n. 1, p. 112–120, 2026. Disponível em: https://journal.futminna.edu.ng/index.php/etsj/article/view/242.. Acesso em: 8 jun. 2026.