$Hydrolysis of Pure and Sodium Substituted Calcium Aluminates and Cement Clinker Components Investigated by in Situ Synchrotron X-ray Powder Diffraction$

Hydrolysis of Pure and Sodium Substituted Calcium Aluminates and Cement Clinker Components Investigated by in Situ Synchrotron X-ray Powder Diffraction

The hydrolysis of pure and sodium‐substituted calcium aluminates and cement clinker phases was investigated in situ in the temperature range 25°–170°C, using the angle dispersive powder synchrotron powder X‐ray diffraction technique. The final hydrolysis product in all cases was Ca3Al2(OH)12. The in...

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Veröffentlicht in:	Journal of the American Ceramic Society 2004-08, Vol.87 (8), p.1488-1493
Hauptverfasser:	Christensen, Axel Nørlund, Jensen, Torben R., Scarlett, Nicola V. Y., Madsen, Ian C., Hanson, Jonathan C.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Buildings. Public works Calcium calcium aluminate Cement Cement concrete constituents Cements Ceramics Diffraction Exact sciences and technology Hydration hydrolysis Materials Properties of anhydrous and hydrated cement, test methods Sodium synchrotron radiation diffraction X-rays
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Beschreibung
Zusammenfassung:	The hydrolysis of pure and sodium‐substituted calcium aluminates and cement clinker phases was investigated in situ in the temperature range 25°–170°C, using the angle dispersive powder synchrotron powder X‐ray diffraction technique. The final hydrolysis product in all cases was Ca3Al2(OH)12. The intermediate phase Ca4Al2O7·19H2O was formed from the pure calcium aluminates, and the intermediate phases Ca4Al2O7·xH2O, x= 11, 13, or 19, were formed from the cement clinker phases.
ISSN:	0002-7820 1551-2916
DOI:	10.1111/j.1551-2916.2004.01488.x