HARMAJI, Andrie. Seawater as Alkali Activator in Fly Ash Based Geopolymer. Engineering, MAthematics and Computer Science Journal (EMACS), [S. l.], v. 4, n. 2, p. 45–49, 2022. DOI: 10.21512/emacsjournal.v4i2.8322. Disponível em: https://journal.binus.ac.id/index.php/EMACS/article/view/8322. Acesso em: 30 aug. 2025.