Quantitative study of Portland cement hydration by X-ray diffraction/Rietveld analysis and independent methods

X-ray diffraction (XRD) is a powerful technique for the study of crystalline materials. The technique of Rietveld refinement now enables the amounts of different phases in anhydrous cementitious materials to be determined to a good degree of precision. This paper describes the extension of this tech...

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Bibliographic Details
Published in:Cement and concrete research 2004-09, Vol.34 (9), p.1541-1547
Main Authors: Scrivener, K.L., Füllmann, T., Gallucci, E., Walenta, G., Bermejo, E.
Format: Article
Language:English
Subjects:
Applied sciences
Buildings. Public works
Cement concrete constituents
Cement paste
Cements
Exact sciences and technology
Hydration
Hydration products
Materials
Properties of anhydrous and hydrated cement, test methods
Rietveld analysis
X-ray diffraction
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Summary:X-ray diffraction (XRD) is a powerful technique for the study of crystalline materials. The technique of Rietveld refinement now enables the amounts of different phases in anhydrous cementitious materials to be determined to a good degree of precision. This paper describes the extension of this technique to a pilot study of the hydration of a typical Portland cement. To validate this XRD–Rietveld analysis technique, its results were compared with independent measures of the same materials by the analysis of backscattered electron images (BSE/IA) and thermogravimetric analysis (TGA). In addition, the internal consistency of the measurements was studied by comparing the XRD estimates of the amounts of hydrates formed with the amounts expected to form from the XRD estimates of the amounts of anhydrous materials reacted.
ISSN:0008-8846
1873-3948
DOI:10.1016/j.cemconres.2004.04.014