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Activation energy and activation volume of creep of hardened cement paste

โœ Scribed by P. Klug; F. Wittmann

Publisher
Elsevier Science
Year
1974
Weight
300 KB
Volume
15
Category
Article
ISSN
0025-5416

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๐Ÿ“œ SIMILAR VOLUMES

The effect of thermal pretreatment on th
The effect of thermal pretreatment on the creep of hardened cement paste
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Miniature, saturated, hardened cement paste specimens were pretreated for 2 days at various temperatures in the range 20-92ยฐC. Specimens were then loaded for 6 days and unloaded; immediate, creep and recovery strains were monitored, as were changes in the microstructure --polysilicate and nitrogen $

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Tests were performed on miniature, thin-wall, hardened cement paste specimens; specimens under load were dried at various rates, re-wet and then unloaded. Deformation was monitored throughout. Appropriate control specimens for shrinkage/swelling, basic creep and weight change were also tested. Rela

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Spectrum and discrete distribution of retardation times for creep of hardened cement paste from very short times
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Creep and creep recovery tests have been performed in bending on beams of hardened cement paste, under controlled conditions at 60% R.H. and 35ยฐC, recording deformations from very short times (O.Is) to 7 days. Recoverable creep curves have been analyzed considering viscoelastic chain models involvin

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In this paper the authors tried to analyze their drying shrinkage data in terms of the Munich model. They have attributed the shrinkage below 40% RH to a change in the surface free energy (socalled Bangham shrinkage) and the shrinkage above 40% RH to the disjoining pressure. As the authors are propo