Extent of immiscibility in the ettringite-thaumasite system

S. J. Barnett; D. E. Macphee; N. J. Crammond

doi:10.1016/s0958-9465(03)00116-1

Extent of immiscibility in the ettringite-thaumasite system

S. J. Barnett, D. E. Macphee, N. J. Crammond

School of Civil Engineering & Surveying

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

Abstract

Solid solutions between thaumasite and the related phase ettringite were prepared and characterised by X-ray diffraction and infrared spectroscopy. A miscibility gap in the solid solution is identified and defined. Crystallographically, the miscibility gap is identified as a gap in the unit cell dimensions of the solid phases formed between c congruent to 20.95 (10.475) and c congruent to 21.3 Angstrom. A combination of quantitative X-ray powder diffraction and infrared spectroscopy enabled us to define the miscibility gap in terms of Al:Si ratio. Ettringite can accept the replacement of 1/2 its Al by Si, while thaumasite tolerates little or no At in its structure. (C) 2003 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	851-855
Number of pages	5
Journal	Cement and Concrete Composites
Volume	25
DOIs	https://doi.org/10.1016/s0958-9465(03)00116-1
Publication status	Published - Dec 2003

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title = "Extent of immiscibility in the ettringite-thaumasite system",

abstract = "Solid solutions between thaumasite and the related phase ettringite were prepared and characterised by X-ray diffraction and infrared spectroscopy. A miscibility gap in the solid solution is identified and defined. Crystallographically, the miscibility gap is identified as a gap in the unit cell dimensions of the solid phases formed between c congruent to 20.95 (10.475) and c congruent to 21.3 Angstrom. A combination of quantitative X-ray powder diffraction and infrared spectroscopy enabled us to define the miscibility gap in terms of Al:Si ratio. Ettringite can accept the replacement of 1/2 its Al by Si, while thaumasite tolerates little or no At in its structure. (C) 2003 Elsevier Ltd. All rights reserved.",

author = "Barnett, \{S. J.\} and Macphee, \{D. E.\} and Crammond, \{N. J.\}",

year = "2003",

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doi = "10.1016/s0958-9465(03)00116-1",

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journal = "Cement and Concrete Composites",

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T1 - Extent of immiscibility in the ettringite-thaumasite system

AU - Barnett, S. J.

AU - Macphee, D. E.

AU - Crammond, N. J.

PY - 2003/12

Y1 - 2003/12

N2 - Solid solutions between thaumasite and the related phase ettringite were prepared and characterised by X-ray diffraction and infrared spectroscopy. A miscibility gap in the solid solution is identified and defined. Crystallographically, the miscibility gap is identified as a gap in the unit cell dimensions of the solid phases formed between c congruent to 20.95 (10.475) and c congruent to 21.3 Angstrom. A combination of quantitative X-ray powder diffraction and infrared spectroscopy enabled us to define the miscibility gap in terms of Al:Si ratio. Ettringite can accept the replacement of 1/2 its Al by Si, while thaumasite tolerates little or no At in its structure. (C) 2003 Elsevier Ltd. All rights reserved.

AB - Solid solutions between thaumasite and the related phase ettringite were prepared and characterised by X-ray diffraction and infrared spectroscopy. A miscibility gap in the solid solution is identified and defined. Crystallographically, the miscibility gap is identified as a gap in the unit cell dimensions of the solid phases formed between c congruent to 20.95 (10.475) and c congruent to 21.3 Angstrom. A combination of quantitative X-ray powder diffraction and infrared spectroscopy enabled us to define the miscibility gap in terms of Al:Si ratio. Ettringite can accept the replacement of 1/2 its Al by Si, while thaumasite tolerates little or no At in its structure. (C) 2003 Elsevier Ltd. All rights reserved.

U2 - 10.1016/s0958-9465(03)00116-1

DO - 10.1016/s0958-9465(03)00116-1

M3 - Article

SN - 0958-9465

VL - 25

SP - 851

EP - 855

JO - Cement and Concrete Composites

JF - Cement and Concrete Composites

ER -

Extent of immiscibility in the ettringite-thaumasite system

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