20.500.12556/DiRROS-16455 Phase development and hydration kinetics of belite-calcium sulfoaluminate cements at different curing temperatures The influence of different curing temperatures on the hydration of belite-calcium sulfoaluminate cement was investigated at 20, 40 and 60 °C. The hydration kinetics and the hydrated phase assemblages were studied by isothermal calorimetry, X-ray powder diffraction, differential thermal analysis and thermogravimetric analysis, as well as field emission scanning electron microscopy. The compressive strength development of the cement pastes was also determined. Results showed that, at early ages, hydration was faster and early compressive strength was higher at elevated temperatures than at ambient temperature. On the other hand, at late ages in cement pastes cured at 60 °C, the amount of ettringite decreased, leading to lower compressive strength, indicating that the degree of hydration was lower at higher temperatures. Moreover, at elevated temperatures prismatic ettringite crystals became smaller due to faster hydration. Other hydration products present were aluminium hydroxide, which is formed together with ettringite from the hydration of calcium sulfoaluminate and gypsum, and C–S–H which precipitates as a main hydration product of belite. Belite hydrated in a lesser amount, especially at 60 °C, when the lowest amount of C–S–H was observed. hydration cement temperature belite calcium sulfoaluminate open access hidratacija cement temperatura belit kalcijev sulfoaluminat true false true Ceramurgica s.p.a. Angleški jezik Ni določen © 2020 The Authors. Published by Elsevier Ltd. Neznano 2023-04-20 12:50:20 2023-08-04 09:28:02 2023-08-05 03:49:14 0000-00-00 00:00:00 2020 0 0 E-članek objavljen: 15 December 2020; str. 29421-29428 iss. 18, part B Vol. 46 2020 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2020-05-05 620.1/.2 0272-8842 10.1016/j.ceramint.2020.05.029 15041027 https://www.sciencedirect.com/science/article/pii/S0272884220313146?via%3Dihub 1 c3e06cfb-df60-11ed-b359-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=22157 RAZ_Mrak_Marusa_2020.pdf RAZ_Mrak_Marusa_2020.pdf 1 9DD4FC8E3C1151D775C89E6885596BE2 3ed89e68f7c6b8c8e5dbd368934252ef58af53db1177d47c27091a53e97cb6ac fb7cd908-df62-11ed-b359-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=22158 Zavod za gradbeništvo Slovenije 0 0 0