20.500.12556/DiRROS-17592 Effect of the cooling regime on the mineralogy and reactivity of belite-sulfoaluminate clinkers This study investigated the influence of different cooling regimes on the microstructure and consequent reactivity of belite-sulfoaluminate clinkers. The cement clinkers were synthesized by incorporating secondary raw materials, such as titanogypsum and bottom ash, to the natural raw materials. Clinker phases were determined by Rietveld quantitative phase analysis, while the distribution morphology and the incorporation of substitute ions in the phases were characterized by scanning electron microscopy using energy-dispersive X-ray spectroscopy (SEM/EDS). Clinker reactivity was studied using isothermal calorimetry and was additionally investigated through compressive strength, which was determined for the cement prepared from the synthesized clinkers. X-ray diffraction analysis showed that, as well as the three main phases (belite, calcium sulfoaluminate, and ferrite), the clinkers contained additional minor phases (mayenite, gehlenite, arkanite, periclase, and perovskite), the ratios of which varied according to the cooling regime utilized. Microscopic observations indicated that the cooling regime also influenced the crystal size and morphology of the main phases, which consequently affected clinker reactivity. Furthermore, a smaller amount of substitute elements was incorporated in the main phases when cooling was slowed. Results showed that, in comparison to clinkers cooled at slower rates, air quenched clinkers reacted faster and exhibited a higher compressive strength at 7 days. clinkers belite calcium sulfoaluminate cooling microstructure reactivity klinker belit belit-sulfoaluminat ohlajanje mikrostruktura reaktivnost true false true MDPI AG Angleški jezik Slovenski jezik © 2020 by the authors. Licensee MDPI, Basel, Switzerland. Neznano 2023-12-20 08:31:47 2023-12-20 08:31:47 2023-12-21 03:38:28 0000-00-00 00:00:00 2020 0 0 Nasl. z nasl. zaslona; Opis vira z dne 15. 10. 2020; str. 1-16 no. 10 Vol. 10 15. Oct. 2020 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2020-10-15 620.1/.2 2075-163X 10.3390/min10100910 32842755 https://www.mdpi.com/2075-163X/10/10/910 Odprti dostop 1 73b9081c-9f01-11ee-9ccb-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=23916 RAZ_Dolenec_Sabina_2020.pdf RAZ_Dolenec_Sabina_2020.pdf 1 890B6F0CEE4232888763EBE4BC0DB4FF 12830d268fbe29508028e2736fe5cf730cb508fececfcc18d6363954b997148b 11cbcb03-9f02-11ee-9ccb-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=23917 Zavod za gradbeništvo Slovenije 0 0 0