Extent of immiscibility in the ettringite-thaumasite system

S. J. Barnett; Donald E MacPhee; N. J. Crammond

doi:10.1016/S0958-9465(03)00116-1

Extent of immiscibility in the ettringite-thaumasite system

S. J. Barnett, Donald E MacPhee, N. J. Crammond

Chemistry

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

27 Citations (Scopus)

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	4
Journal	Cement & Concrete Composites
Volume	25
Issue number	8
Early online date	19 Sept 2003
DOIs	https://doi.org/10.1016/S0958-9465(03)00116-1
Publication status	Published - Dec 2003

Keywords

thaumasite
ettringite
solid solution
center-dot 26H(2)O
crystal structure
solid-solutions
5-75-degrees-C
solubility

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10.1016/S0958-9465(03)00116-1

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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.",

keywords = "thaumasite, ettringite, solid solution, center-dot 26H(2)O, crystal structure, solid-solutions, 5-75-degrees-C, solubility",

author = "Barnett, {S. J.} and MacPhee, {Donald E} and Crammond, {N. J.}",

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TY - JOUR

T1 - Extent of immiscibility in the ettringite-thaumasite system

AU - Barnett, S. J.

AU - MacPhee, Donald 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.

KW - thaumasite

KW - ettringite

KW - solid solution

KW - center-dot 26H(2)O

KW - crystal structure

KW - solid-solutions

KW - 5-75-degrees-C

KW - solubility

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 & Concrete Composites

JF - Cement & Concrete Composites

IS - 8

ER -

Extent of immiscibility in the ettringite-thaumasite system

Abstract

Keywords

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