C<inf>4</inf>A<inf>3</inf><math><rm><ovl>S</ovl></rm></math> hydration, ettringite formation, and its expansion mechanism: II. Microstructural observation of expansion: Fid-Bau Portal

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C4A3 $S$ hydration, ettringite formation, and its expansion mechanism: II. Microstructural observation of expansion

Ogawa, K. / Roy, D.M.

AbstractC4A3 $S$ hydration reactions and consequent expansion mechanisms upon formation of ettringite are investigated. SEM studies using polished sections and EDX, as well as DSC and XRD are the methods used, combined with direct measurement of expansion. Irregular early stage hydration products are formed, changing to long needle-like crystals which become oriented radially around the C4A3 $S$ cores. Expansion starts when reaction zones intersect and stress is generated.

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C4A3 $S$ hydration, ettringite formation, and its expansion mechanism: II. Microstructural observation of expansion

Ogawa, K. / Roy, D.M.

AbstractC4A3 $S$ hydration reactions and consequent expansion mechanisms upon formation of ettringite are investigated. SEM studies using polished sections and EDX, as well as DSC and XRD are the methods used, combined with direct measurement of expansion. Irregular early stage hydration products are formed, changing to long needle-like crystals which become oriented radially around the C4A3 $S$ cores. Expansion starts when reaction zones intersect and stress is generated.

C4A3 $S$ hydration, ettringite formation, and its expansion mechanism: II. Microstructural observation of expansion

Ogawa, K. / Roy, D.M.

AbstractC4A3 $S$ hydration reactions and consequent expansion mechanisms upon formation of ettringite are investigated. SEM studies using polished sections and EDX, as well as DSC and XRD are the methods used, combined with direct measurement of expansion. Irregular early stage hydration products are formed, changing to long needle-like crystals which become oriented radially around the C4A3 $S$ cores. Expansion starts when reaction zones intersect and stress is generated.

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Title:

C4A3 $S$ hydration, ettringite formation, and its expansion mechanism: II. Microstructural observation of expansion

Contributors:

Ogawa, K. (author) / Roy, D.M. (author)

Published in:

Cement and Concrete Research ; 12 ; 101-109

Publication date:

1981-10-13

Size:

9 pages

ISSN:

DOI:

https://doi.org/10.1016/0008-8846(82)90104-1

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

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