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Volume 7, Issue 27
July 1995
Advances in Cement Research Cover Image for Volume 7, Issue 27
Research Article| July 01 1995

Thermodynamic investigation of the CaO—Al2O3— CaSO4—CaCO3-H2O closed system at 25°C and the influence of Na2O

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Department of Chemistry, University of Aberdeen, Aberdeen AB9 2UE, UK.

Publisher: Emerald Publishing
Online ISSN: 1751-7605
Print ISSN: 0951-7197
© 1995 Thomas Telford Ltd
1995
Advances in Cement Research (1995) 7 (27): 129–134.
https://doi.org/10.1680/adcr.1995.7.27.129

The CaO—Al2O3— CaSO4—CaCO3-H2O closed system at 25°C has been investigated by thennodynamic calculations: eight isothermally invariant points have been determined. From these points, the composition of the solutions coexisting at equilibrium with ettringite, calcium hemicarboaluminate and/or calcium monocarboaluminate has been defined. The influence of alkalis on solubility relations and phase stability is outlined on the basis of preliminary calculations.

Keywords: cement
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© 1995 Thomas Telford Ltd
1995
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