Publication result detail
The hydration of calcium aluminates phases at low temperatures (5 °C, 10 °C, 15 °C)
KOPLÍK, J.; NOVOTNÝ, R.; MÁSILKO, J.; ŠVEC, J.
Original Title
The hydration of calcium aluminates phases at low temperatures (5 °C, 10 °C, 15 °C)
English Title
The hydration of calcium aluminates phases at low temperatures (5 °C, 10 °C, 15 °C)
Type
Paper in proceedings (conference paper)
Original Abstract
The paper is focused on the hydration of the calcium aluminate phases at low temperatures. Monocalcium aluminate (CA), monocalcium dialuminate (CA2), dodecacalcium heptaaluminte (C12A7) and tricalcium aluminate (C3A) were prepared by sintering stoichiometric ratios of CaCO3 and Al2O3 at high temperatures. The hydration was performed at three temperatures (5 °C, 10 °C and 15 °C) for 50 hours. The course of hydration was measured by isothermal calorimetry. The hydration products were characterized by X-ray diffraction (XRD) and combined differential thermal analysis - thermogravimetry (DTA-TG). The reactivity of phases decreased with higher content of alumina from C3A to CA2. The main hydration product of CA2 and CA was CAH10 at all temperatures. C3A and C12A7 created various hydration products, which depended on the temperature.
English abstract
The paper is focused on the hydration of the calcium aluminate phases at low temperatures. Monocalcium aluminate (CA), monocalcium dialuminate (CA2), dodecacalcium heptaaluminte (C12A7) and tricalcium aluminate (C3A) were prepared by sintering stoichiometric ratios of CaCO3 and Al2O3 at high temperatures. The hydration was performed at three temperatures (5 °C, 10 °C and 15 °C) for 50 hours. The course of hydration was measured by isothermal calorimetry. The hydration products were characterized by X-ray diffraction (XRD) and combined differential thermal analysis - thermogravimetry (DTA-TG). The reactivity of phases decreased with higher content of alumina from C3A to CA2. The main hydration product of CA2 and CA was CAH10 at all temperatures. C3A and C12A7 created various hydration products, which depended on the temperature.
Keywords
calcium aluminate phases, low temperatures, calorimetry
Key words in English
calcium aluminate phases, low temperatures, calorimetry
Authors
KOPLÍK, J.; NOVOTNÝ, R.; MÁSILKO, J.; ŠVEC, J.
RIV year
2020
Released
16.09.2019
Publisher
Research Institute of Binding Materials Prague
Location
Prague
Book
PAPERS AND POSTERS PROCEEDINGS: 15th International Congress on the Chemistry of Cement
ISBN
2523-935X
Periodical
5th International Congress on the Chemistry of Cement (ICCC 2019) Congress proceedings – Papers and Posters Proceedings
State
Czech Republic
Pages from
-
Pages to
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Pages count
7