Quantitative in-situ X-ray diffraction analysis of early hydration of Portland cement at defined temperatures

Götz-Neunhoeffer F, Neubauer J, Hesse C, Gäberlein P, Bräu M (2009)

Publication Language: English

Publication Type: Journal article

Publication year: 2009

Journal

Powder Diffraction Cambridge University Press (CUP)

Publisher: Cambridge University Press (CUP)

Book Volume: 24

Pages Range: 112-115

Journal Issue: 2

DOI: 10.1154/1.3120603

Abstract

Investigation into the early hydration of Portland cement was performed by in situ X-ray diffraction (XRD). Technical white cement was used for the XRD analysis on a D5000 diffractometer (Siemens). All diffraction patterns of the in situ measurement which were recorded up to 22 h of hydration at defined temperatures were analyzed by Rietveld refinement. The resulting phase composition was transformed with respect to free water and C-S-H leading to the total composition of the cement paste. The hydration reactions can be observed by dissolution of clinker phases as well as by the formation of the hydrate phases ettringite and portlandite. With increasing temperatures the reactions proceed faster. The formation of ettringite is directly influenced by the rate of dissolution of anhydrite and tricalcium aluminate (C3 A). The beginning of the main period of hydration is marked by the start of portlandite formation. The experiments point out that a quantitative phase analysis of the cement hydration is feasible with standard laboratory diffractometers. © 2009 International Centre for Diffraction Data.

Authors with CRIS profile

Friedlinde Götz-Neunhoeffer Lehrstuhl für Mineralogie Jürgen Neubauer Lehrstuhl für Mineralogie

Involved external institutions

BASF Construction Solutions GmbH DE Germany (DE)

How to cite

APA:

Götz-Neunhoeffer, F., Neubauer, J., Hesse, C., Gäberlein, P., & Bräu, M. (2009). Quantitative in-situ X-ray diffraction analysis of early hydration of Portland cement at defined temperatures. Powder Diffraction, 24(2), 112-115. https://doi.org/10.1154/1.3120603

MLA:

Götz-Neunhoeffer, Friedlinde, et al. "Quantitative in-situ X-ray diffraction analysis of early hydration of Portland cement at defined temperatures." Powder Diffraction 24.2 (2009): 112-115.

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