Solubility properties of ternary and quaternary compounds in the CaO Al2O3 SO3H2O system

M. Atkins; D. Macphee; A. Kindness; F. P. Glasser

doi:10.1016/0008-8846(91)90058-P

Solubility properties of ternary and quaternary compounds in the CaO Al₂O₃ SO₃H₂O system

M. Atkins^*, D. Macphee, A. Kindness, F. P. Glasser

^*Corresponding author for this work

CSIRO

Research output: Contribution to journal › Article › peer-review

41 Citations (Scopus)

Abstract

Solubility measurements are reported for four hydrated cement phases. A technique employing repeated dispersion and filtration is described which enabled the solubility (activity) products of ettringite (C₆AS₃H₃₂) and hydrogarnet (C₃AH₆) to be calculated with confidence. Free energies of formation are also given. These phases dissolve congruently, whereas monosulphate (C₄ASH₂) and tetra-calcium aluminate hydrate (C₄AH₁₃) exhibit incongruent dissolution, and can therefore not be described by a conventional solubility product. The results represent additional data for inclusion in thermodynamic databases currently being applied to the modelling of cement systems.

Original language	English
Pages (from-to)	991-998
Number of pages	8
Journal	Cement and Concrete Research
Volume	21
Issue number	6
DOIs	https://doi.org/10.1016/0008-8846(91)90058-P
Publication status	Published - 1 Jan 1991

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10.1016/0008-8846(91)90058-P

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title = "Solubility properties of ternary and quaternary compounds in the CaO Al2O3 SO3H2O system",

abstract = "Solubility measurements are reported for four hydrated cement phases. A technique employing repeated dispersion and filtration is described which enabled the solubility (activity) products of ettringite (C6AS3H32) and hydrogarnet (C3AH6) to be calculated with confidence. Free energies of formation are also given. These phases dissolve congruently, whereas monosulphate (C4ASH2) and tetra-calcium aluminate hydrate (C4AH13) exhibit incongruent dissolution, and can therefore not be described by a conventional solubility product. The results represent additional data for inclusion in thermodynamic databases currently being applied to the modelling of cement systems.",

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T1 - Solubility properties of ternary and quaternary compounds in the CaO Al2O3 SO3H2O system

AU - Atkins, M.

AU - Macphee, D.

AU - Kindness, A.

AU - Glasser, F. P.

PY - 1991/1/1

Y1 - 1991/1/1

N2 - Solubility measurements are reported for four hydrated cement phases. A technique employing repeated dispersion and filtration is described which enabled the solubility (activity) products of ettringite (C6AS3H32) and hydrogarnet (C3AH6) to be calculated with confidence. Free energies of formation are also given. These phases dissolve congruently, whereas monosulphate (C4ASH2) and tetra-calcium aluminate hydrate (C4AH13) exhibit incongruent dissolution, and can therefore not be described by a conventional solubility product. The results represent additional data for inclusion in thermodynamic databases currently being applied to the modelling of cement systems.

AB - Solubility measurements are reported for four hydrated cement phases. A technique employing repeated dispersion and filtration is described which enabled the solubility (activity) products of ettringite (C6AS3H32) and hydrogarnet (C3AH6) to be calculated with confidence. Free energies of formation are also given. These phases dissolve congruently, whereas monosulphate (C4ASH2) and tetra-calcium aluminate hydrate (C4AH13) exhibit incongruent dissolution, and can therefore not be described by a conventional solubility product. The results represent additional data for inclusion in thermodynamic databases currently being applied to the modelling of cement systems.

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ER -

Solubility properties of ternary and quaternary compounds in the CaO Al₂O₃ SO₃H₂O system

Abstract

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