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Strätlingite formation in high alimina cement - silica fume systems: significance of sodium ions

Ding, J. / Fu, Y. / Beaudon, J.J.

The effect of sodium sulphate on strätlingite formation in the high alumina cement - silica fume - water system is described. The reaction mechanisms associated with strätlingite and hydrogarnet formation are discussed. The effect of silica fume addition on the microstructure of high alumina cement paste is also reported. Sodium ions have a significant influence on strätlingite formation in these systems. A mechanism for strätlingite formation is postulated. It involves reactions between (CaO)(Al2O3)(10H2O) or (2CaO)(Al2O3)(8H2O) and dissolved silica. Presence of sodium ions accelerates dissolution of silica required for strätlingite formation.

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Strätlingite formation in high alimina cement - silica fume systems: significance of sodium ions

Ding, J. / Fu, Y. / Beaudon, J.J.

The effect of sodium sulphate on strätlingite formation in the high alumina cement - silica fume - water system is described. The reaction mechanisms associated with strätlingite and hydrogarnet formation are discussed. The effect of silica fume addition on the microstructure of high alumina cement paste is also reported. Sodium ions have a significant influence on strätlingite formation in these systems. A mechanism for strätlingite formation is postulated. It involves reactions between (CaO)(Al2O3)(10H2O) or (2CaO)(Al2O3)(8H2O) and dissolved silica. Presence of sodium ions accelerates dissolution of silica required for strätlingite formation.

Strätlingite formation in high alimina cement - silica fume systems: significance of sodium ions

Ding, J. / Fu, Y. / Beaudon, J.J.

The effect of sodium sulphate on strätlingite formation in the high alumina cement - silica fume - water system is described. The reaction mechanisms associated with strätlingite and hydrogarnet formation are discussed. The effect of silica fume addition on the microstructure of high alumina cement paste is also reported. Sodium ions have a significant influence on strätlingite formation in these systems. A mechanism for strätlingite formation is postulated. It involves reactions between (CaO)(Al2O3)(10H2O) or (2CaO)(Al2O3)(8H2O) and dissolved silica. Presence of sodium ions accelerates dissolution of silica required for strätlingite formation.

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Title:

Strätlingite formation in high alimina cement - silica fume systems: significance of sodium ions

Additional title:

Strätlingitbildung in Hochtonerdezement-Silicafeinststaub-Systemen: Signifikanz von Natriumionen

Contributors:

Ding, J. (author) / Fu, Y. (author) / Beaudon, J.J. (author)

Published in:

Cement and Concrete Research ; 25 ; 1311-1319

Publication date:

1995

Size:

9 Seiten, 6 Bilder, 3 Tabellen, 18 Quellen

ISSN:

DOI:

https://doi.org/10.1016/0008-8846(95)00124-U

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Tonerdezement , Zusatzstoff , Natriumsulfat , Siliciumoxid , Siliciumdioxid , Hydratisieren , Phasenzusammensetzung , Calciumaluminatbinder , Calciumaluminathydrat , Wasserabbinden von Zement , hydraulisches Bindemittel , hydraulischer Zement , Granat

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