The hydration of alite: a time-resolved quantitative X-ray diffraction approach using the G-factor method compared with heat release

The classical external‐standard method derived from the work of O'Connor & Raven [Powder Diffr. (1988), 3, 2–6] was used to examine the hydration of the major phase, alite, of ordinary Portland cements at different temperatures and different water/alite ratios. In order to estimate the accu...

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Bibliographic Details
Published in:Journal of applied crystallography 2011-10, Vol.44 (5), p.895-901
Main Authors: Jansen, Daniel, Bergold, Sebastian T., Goetz-Neunhoeffer, Friedlinde, Neubauer, Jürgen
Format: Article
Language:English
Subjects:
alite hydration
Crystallography
Diffraction
Dissolution
Estimates
G-factor method
Heat
heat-flow calorimetry
Hydration
in situ X-ray diffraction analysis
Mathematical analysis
Tricalcium silicate
X-rays
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Summary:The classical external‐standard method derived from the work of O'Connor & Raven [Powder Diffr. (1988), 3, 2–6] was used to examine the hydration of the major phase, alite, of ordinary Portland cements at different temperatures and different water/alite ratios. In order to estimate the accuracy of the method, heat‐flow curves were calculated from the alite dissolution curves obtained from X‐ray diffraction in situ experiments. The heat‐flow curves calculated in this way were compared with heat‐flow curves recorded using a calorimeter. It is shown that the calculated curves agree well with the curves obtained from heat‐flow experiments.
ISSN:1600-5767
0021-8898
1600-5767
DOI:10.1107/S0021889811025933