Water chemical potential: A key parameter to determine the thermodynamic stability of some hydrated cement phases in concrete? - Mines Saint-Étienne Access content directly
Journal Articles Cement and Concrete Research Year : 2006

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

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.

Dates and versions

emse-00612122 , version 1 (28-07-2011)

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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, 2006, 30 (5), pp.783-790. ⟨10.1016/j.cemconres.2005.12.016⟩. ⟨emse-00612122⟩
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