POROUS FLY ASH-BASED GEOPOLYMER USABLE AS AN UNCONVENTIONAL CONSTRUCTION MATERIAL. Journal of Engineering Studies and Research, [S. l.], v. 29, n. 3, p. 57–65, 2024. DOI: 10.29081/jesr.v29i3.006. Disponível em: https://jesr.ub.ro/journal/article/view/399. Acesso em: 13 sep. 2025.