NURWIDAYATI, R.; HARYANTI, N. H.; CHAIRUNNISA, N.; PRATIWI, A. Y.; KRASNA, W. A.; RAHMADANIA, N. Investigating the Impact of Fly Ash Replacement with Portland Cement on Porosity, Water Absorption, and Compressive Strength of Geopolymer Mortars in a Tidal Acid Environment. Engineering, Technology & Applied Science Research, Greece, v. 15, n. 6, p. 28829–28835, 2025. DOI: 10.48084/etasr.13667. Disponível em: https://etasr.com/index.php/ETASR/article/view/13667. Acesso em: 1 may. 2026.