The Effect of Fly Ash Mixture on Concrete Compressive Strength. JTERA (Jurnal Teknologi Rekayasa), [S. l.], v. 8, n. 1, p. 19–24, 2023. DOI: 10.31544/jtera.v8.i1.2022.19-24. Disponível em: https://jtera.polteksmi.ac.id/index.php/jtera/article/view/800. Acesso em: 24 jun. 2026.