20.500.12556/DiRROS-23491 Mechanical and microstructural characterization of geopolymer synthesized from low calcium fly ash This study deals with the mechanical and microstructural characterization of geopolymers synthesized from locally available fly ash. A low calcium fly ash was activated using a sodium silicate solution. Samples were characterized by means of flexural and compressive tests, Fourier Transform Infrared (FTIR) spectroscopy, X-ray powder diffraction (XRD), and scanning electron microscopy(SEM). Porosity and pore size distributions were identified using mercury intrusion porosimetry and gas sorption. The compressive strength of the produced geopolymers, which is in the range of 1.6 to 53.3 N/mm2, is strongly related to the water content as well as SiO2/Na2O mass ratio of an alkali activator. The compressive strength significantly increased with decreases in the water content and increased silicon concentration used for the synthesis of geopolymers. geopolymers fly ash microstructure mechanical properties geopolimeri elektrofiltrski pepel mikrostruktura mehanske lastnosti true false true Association of Chemical Engineers Angleški jezik Srbski jezik Neznano 2025-09-05 07:52:07 2025-09-05 07:58:00 2025-10-24 03:54:26 0000-00-00 00:00:00 2015 0 0 str. 13-22 no. 1 Vol. 21 2015 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2015-01-01 624 1451-9372 10.2298/CICEQ130725042K 2009703 https://doi.org/10.2298/CICEQ130725042K 0 7bad6fdb-8a1c-11f0-9bb7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=34745 RAZ_Dolenec_Sabina_2015.pdf RAZ_Dolenec_Sabina_2015.pdf 1 5EFE673E0AC36E05E758E2363A5FA016 6a7f32f6fc9a1d909177050f9063da8e11ac76ec8f6f97043ed1a00f47e41025 3badd393-8a1d-11f0-9bb7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=34746 Zavod za gradbeništvo Slovenije 0 0 0