NURWIDAYATI, Ratni; HARYANTI, Ninis Hadi; CHAIRUNNISA, Nursiah; PRATIWI, Ade Yuniati; KRASNA, Wiku Adhiwicaksana; RAHMADANIA, Nadia. 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://www.etasr.com/index.php/ETASR/article/view/13667. Acesso em: 11 jun. 2026.