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Extent of immiscibility in the ettringite-thaumasite system
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 20,95(10,475) A.U. and c congruent 21,3 A.U.. A combination of quantitative X-ray powder diffraction and infrared spectroscopy enabled the authors to define the miscibility gap in terms of Al:Si ratio. Ettringite can accept the replacement of 1/2 its Al by Si, while in thaumasite around 1/8 of the Si can be replaced by Al.
Extent of immiscibility in the ettringite-thaumasite system
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 20,95(10,475) A.U. and c congruent 21,3 A.U.. A combination of quantitative X-ray powder diffraction and infrared spectroscopy enabled the authors to define the miscibility gap in terms of Al:Si ratio. Ettringite can accept the replacement of 1/2 its Al by Si, while in thaumasite around 1/8 of the Si can be replaced by Al.
Extent of immiscibility in the ettringite-thaumasite system
Mischungslücke im System Ettringit-Thaumasit
Barnett, S.J. (Autor:in) / Macphee, D.E. (Autor:in) / Crammond, N.J. (Autor:in)
2002
8 Seiten, 6 Bilder, 1 Tabelle, 21 Quellen
Aufsatz (Konferenz)
Datenträger
Englisch
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