ARIE PUTRANTO, Nugroho. Utilization of Coal Combustion Waste (Fly Ash) For Geopolymer Concrete as Green Concrete. Devotion : Journal of Research and Community Service, [S. l.], v. 3, n. 4, p. 370–378, 2022. DOI: 10.36418/dev.v3i4.130. Disponível em: https://devotion.greenvest.co.id/index.php/dev/article/view/130. Acesso em: 10 jul. 2026.