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KOPLÍK, J. NOVOTNÝ, R. TOMALA, L.
Original Title
Hydration of Calcium Aluminate Phases at Different Temperatures
Type
conference paper
Language
English
Original Abstract
Mayenite (C12A7) and calcium dialuminate (CA2) are both components of Calcium aluminate Cement (CAC). The hydration of these phases depends on initial conditions especially on the temperature. Pure phases were synthesized by solid-state reaction. The hydration was carried out at three different temperatures – 20 C, 30 C and 60 C. The course of hydration was investigated by isothermal calorimetry. The results prove, that higher temperature increase reactivity of phases and decrease their initial period of hydration. The X-ray diffraction analysis (XRD) identified the hydration products of CA2 as katoite (C3AH6) and gibbsite (AH3). The hydration products of C12A7 depends on the temperature. At 20 C the major products are C2AH8 and CAH10. At 30 C CAH10 disappears and only C2AH8 remains. At 60 C the only stable hydrates – C3AH6 and AH3 are formed.
Keywords
C12A7, CA2, Calcium Aluminate Phase, Hydration
Authors
KOPLÍK, J.; NOVOTNÝ, R.; TOMALA, L.
RIV year
2014
Released
11. 8. 2014
Publisher
Trans Tech Publications
Location
Switzerland
ISBN
1022-6680
Periodical
Advanced Materials Research
Year of study
Number
1000
State
Swiss Confederation
Pages from
24
Pages to
27
Pages count
4
BibTex
@inproceedings{BUT108701, author="Jan {Koplík} and Radoslav {Novotný} and Libor {Tomala}", title="Hydration of Calcium Aluminate Phases at Different Temperatures", booktitle="Ecology and New Building Materials and Products", year="2014", journal="Advanced Materials Research", volume="2014", number="1000", pages="24--27", publisher="Trans Tech Publications", address="Switzerland", doi="10.4028/www.scientific.net/AMR.1000.24", issn="1022-6680" }