Thermodynamic investigation of the CaO—Al2O3— CaSO4—CaCO3-H2O closed system at 25°C and the influence of Na2O
- 1 July 1995
- journal article
- Published by Thomas Telford Ltd. in Advances in Cement Research
- Vol. 7 (27) , 129-134
- https://doi.org/10.1680/adcr.1995.7.27.129
Abstract
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
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