The hydration of calcium aluminates phases at low temperatures (5 °C, 10 °C, 15 °C)

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The hydration of calcium aluminates phases at low temperatures (5 °C, 10 °C, 15 °C)

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

The hydration of calcium aluminates phases at low temperatures (5 °C, 10 °C, 15 °C)

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

PAPERS AND POSTERS PROCEEDINGS: 15th International Congress on the Chemistry of Cement

ISBN

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ISSN

2523-935X

e-ISSN

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Počet stran výsledku

7

Strana od-do

„-“-„-“

Název nakladatele

Research Institute of Binding Materials Prague

Místo vydání

Prague

Místo konání akce

Praha

Datum konání akce

16. 9. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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