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Differential scanning calorimetry study of ordinary Portland cement

Sha, W. / O'Neill, E.A. / Guo, Z.

The present work involves using differential scanning calorimeter (DSC) in an investigation of the thermal behaviour of hydration products in ordinary Portland cement as a function of age. The two-step loss of water from calcium silicate hydrate, dehydroxylation of calcium hydroxide, and decarbonation of calcium carbonate contribute respectively to the three major endothermic peaks in the DSC curves. Peaks due to the formation of ettringite and iron-substituted ettringite, C₄AH₁₃ and Fe₂O₃ solid solution, were also found. Some DSC observations were supplemented by X-ray diffraction analysis.

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Differential scanning calorimetry study of ordinary Portland cement

Sha, W. / O'Neill, E.A. / Guo, Z.

The present work involves using differential scanning calorimeter (DSC) in an investigation of the thermal behaviour of hydration products in ordinary Portland cement as a function of age. The two-step loss of water from calcium silicate hydrate, dehydroxylation of calcium hydroxide, and decarbonation of calcium carbonate contribute respectively to the three major endothermic peaks in the DSC curves. Peaks due to the formation of ettringite and iron-substituted ettringite, C₄AH₁₃ and Fe₂O₃ solid solution, were also found. Some DSC observations were supplemented by X-ray diffraction analysis.

Differential scanning calorimetry study of ordinary Portland cement

Sha, W. / O'Neill, E.A. / Guo, Z.

The present work involves using differential scanning calorimeter (DSC) in an investigation of the thermal behaviour of hydration products in ordinary Portland cement as a function of age. The two-step loss of water from calcium silicate hydrate, dehydroxylation of calcium hydroxide, and decarbonation of calcium carbonate contribute respectively to the three major endothermic peaks in the DSC curves. Peaks due to the formation of ettringite and iron-substituted ettringite, C₄AH₁₃ and Fe₂O₃ solid solution, were also found. Some DSC observations were supplemented by X-ray diffraction analysis.

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Title:

Differential scanning calorimetry study of ordinary Portland cement

Additional title:

Differentielle Rasterkalometrieuntersuchung an normalem Portlandzement

Contributors:

Sha, W. (author) / O'Neill, E.A. (author) / Guo, Z. (author)

Published in:

Cement and Concrete Research ; 29 ; 1487-1489

Publication date:

1999

Size:

3 Seiten, 9 Quellen

ISSN:

DOI:

https://doi.org/10.1016/S0008-8846(99)00128-3

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Differenzialrasterkalorimetrie , Thermoanalyse , Hydratisieren , Carbonisieren , Hydrat , Silicat , Calciumhydroxid , Carbonat , Kennzeichnung , Eisenoxid , Röntgenbeugung , Röntgenanalyse , Calciumsilicat , Calciumcarbonat , anorganische Verbindung , Portlandzement , Zementpaste , Hydroxylierung

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