20.500.12556/DiRROS-16967 Aggregates obtained by alkali activation of fly ash the effect of granulation, pelletization methods and curing regimes This paper presents results regarding the phase composition, microstructure and textural properties of two types of aggregates, which were prepared via crushing or pelletization of alkali-activated Class F fly ash and cured under different conditions. The alkali activator was the same for aggregate products, containing an alkaline solution consisting of 8 M NaOH and Na-silicate (8 M NaOH/Na-silicate = 1:2.5 mass ratio). The aforementioned properties were influenced by two different preparation procedures combined with varying curing regimes (under normal conditions at 20 %C, RH 40%60% for 28 and 120 days and under an accelerated regime, at 65 %C for 5 days). Aggregates were characterized using X-ray diffraction (XRD), Fourier-transform transmission infrared spectroscopy (FTIR), back scattered electron microscopy with energy dispersive spectrometer (BSE-EDS) analyses and mercury intrusion porosimetry (MIP). The results showed noteworthy structural and textural diversities between the two types of aggregate. The method of preparation and curing regime affected the formation of the N-A-S-H structure and the texture of the alkali-activated fly ash product, with the crushing method giving an advantage alkali activation agregat FTIR alkalna aktivacija true false true Molecular Diversity Preservation International Angleški jezik Slovenski jezik © 2019 by the authors. Licensee MDPI, Basel, Switzerland. Neznano 2023-09-14 09:04:08 2023-09-14 09:15:33 2023-09-15 03:38:53 0000-00-00 00:00:00 2019 0 0 Nasl. z nasl. zaslona; Opis vira z dne 6. 3. 2019; Številka članka : 776; str. 1-22 no. 5 Vol. 12 2019 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2019-03-06 620.1/.2 1996-1944 10.3390/ma12050776 2432615 https://www.mdpi.com/1996-1944/12/5/776 1 231a6024-52bc-11ee-8cc8-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=23056 RAZ_Rudic_Ognjen_Lj._2019.pdf RAZ_Rudic_Ognjen_Lj._2019.pdf 1 1AE1308E6B576527101C9729EABE7E91 56cfeed0ea399ba46d11c4d1dcb97370028079e5748b6ea320a030f10580b72b a4dfc7ae-52bd-11ee-8cc8-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=23057 Zavod za gradbeništvo Slovenije 0 0 0