Water chemical potential: A key parameter to determine the thermodynamic stability of some hydrated cement phases in concrete?

Blandine Albert 1, 2, 3 Guy Bernard 1, 2, 3 Denis Damidot 4
3 LMV-ENSMSE - Laboratoire Magmas et Volcans
Mines Saint-Étienne MSE - École des Mines de Saint-Étienne, SPIN, CNRS - Centre National de la Recherche Scientifique : UMR6524, LMV - Laboratoire Magmas et Volcans : UMR 6524
Abstract : The CaO-Al2O3-SO3-H2O system at 25 °C under 1 bar of pressure has been investigated with phase diagrams software (Zen+k) based on chemical potentials (or activities). The reported invariant points are similar to those obtained previously using equilibrium calculations. However Zen+k enables us to calculate systems at different relative humidities, and in conditions where water is not in excess, calcium monosulfoaluminate could be a stable phase and thus, as observed experimentally, remain for long times in an ordinary Portland cement paste.
Type de document :
Article dans une revue
Cement and Concrete Research, Elsevier, 2006, 30 (5), pp.783-790. 〈10.1016/j.cemconres.2005.12.016〉
Liste complète des métadonnées

https://hal-emse.ccsd.cnrs.fr/emse-00612122
Contributeur : Andrée-Aimée Toucas <>
Soumis le : jeudi 28 juillet 2011 - 11:04:13
Dernière modification le : mercredi 31 octobre 2018 - 11:20:04

Identifiants

Citation

Blandine Albert, Guy Bernard, Denis Damidot. Water chemical potential: A key parameter to determine the thermodynamic stability of some hydrated cement phases in concrete?. Cement and Concrete Research, Elsevier, 2006, 30 (5), pp.783-790. 〈10.1016/j.cemconres.2005.12.016〉. 〈emse-00612122〉

Partager

Métriques

Consultations de la notice

122