Investigation of the CaO-Al2O3-SiO2-CaSO4-CaCO3-H2O system at 25 degrees C by thermodynamic calculation

D. Damidot; S. J. Barnett; F. P. Glasser; D. E. Macphee

Investigation of the CaO-Al2O3-SiO2-CaSO4-CaCO3-H2O system at 25 degrees C by thermodynamic calculation

D. Damidot, S. J. Barnett, F. P. Glasser, D. E. Macphee

School of Civil Engineering & Surveying

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

Abstract

The phase diagram of the CaO-Al2O3-SiO2-CaSO4-CaCO3-H2O system relevant to cement has been calculated at 25degreesC and 1 bar pressure. It is composed of 331 stable phase assemblages in equilibrium with the aqueous phase and contains 30 invariant points with 15 solids. Thaumasite appears to be a stable phase with a wide stability domain. Compared to ettringite, thaumasite is stable to lower pH and generally demands higher sulphate concentrations to be stable.

Original language	English
Pages (from-to)	69-76
Number of pages	8
Journal	Advances in Cement Research
Volume	16
Publication status	Published - 2004

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title = "Investigation of the CaO-Al2O3-SiO2-CaSO4-CaCO3-H2O system at 25 degrees C by thermodynamic calculation",

abstract = "The phase diagram of the CaO-Al2O3-SiO2-CaSO4-CaCO3-H2O system relevant to cement has been calculated at 25degreesC and 1 bar pressure. It is composed of 331 stable phase assemblages in equilibrium with the aqueous phase and contains 30 invariant points with 15 solids. Thaumasite appears to be a stable phase with a wide stability domain. Compared to ettringite, thaumasite is stable to lower pH and generally demands higher sulphate concentrations to be stable.",

author = "D. Damidot and Barnett, \{S. J.\} and Glasser, \{F. P.\} and Macphee, \{D. E.\}",

year = "2004",

language = "English",

volume = "16",

pages = "69--76",

journal = "Advances in Cement Research",

issn = "0951-7197",

publisher = "ICE Publishing Company",

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T1 - Investigation of the CaO-Al2O3-SiO2-CaSO4-CaCO3-H2O system at 25 degrees C by thermodynamic calculation

AU - Damidot, D.

AU - Barnett, S. J.

AU - Glasser, F. P.

AU - Macphee, D. E.

PY - 2004

Y1 - 2004

N2 - The phase diagram of the CaO-Al2O3-SiO2-CaSO4-CaCO3-H2O system relevant to cement has been calculated at 25degreesC and 1 bar pressure. It is composed of 331 stable phase assemblages in equilibrium with the aqueous phase and contains 30 invariant points with 15 solids. Thaumasite appears to be a stable phase with a wide stability domain. Compared to ettringite, thaumasite is stable to lower pH and generally demands higher sulphate concentrations to be stable.

AB - The phase diagram of the CaO-Al2O3-SiO2-CaSO4-CaCO3-H2O system relevant to cement has been calculated at 25degreesC and 1 bar pressure. It is composed of 331 stable phase assemblages in equilibrium with the aqueous phase and contains 30 invariant points with 15 solids. Thaumasite appears to be a stable phase with a wide stability domain. Compared to ettringite, thaumasite is stable to lower pH and generally demands higher sulphate concentrations to be stable.

M3 - Article

SN - 0951-7197

VL - 16

SP - 69

EP - 76

JO - Advances in Cement Research

JF - Advances in Cement Research

ER -

Investigation of the CaO-Al2O3-SiO2-CaSO4-CaCO3-H2O system at 25 degrees C by thermodynamic calculation

Abstract

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