PEMANFAATAN FLY ASH PADA KUAT TEKAN BETON K300. FROPIL (Forum Profesional Teknik Sipil), [S. l.], v. 5, n. 1, p. 25–33, 2017. DOI: 10.33019/fropil.v5i1.1371. Disponível em: https://journal.ubb.ac.id/index.php/fropil/article/view/1371. Acesso em: 10 sep. 2025.