THE APPLICATION OF RATE THEORY TO TIME-DEPENDENT DEFORMATION OF CONCRETE
On the basis of rate theory a formula is derived which describes creep of concrete under sealed and drying conditions. A series of exponential expressions is introduced for the time dependence of shrinkage. Small specimens of hardened cement paste were tested under sealed conditions at 90% r.h and 53% r.h. Creep was also determined on specimens equilibrated at 90% r.h. but tested at 53% r.h. similar experiments were carried out on hollow cylinders of hardened cement paste. The observed behaviour could be satisfactorily described with the help of the derived formula. The validity of the equation and some advantages of its application are further established by a critical comparison with suitable concrete creep data in the literature. Possible extensions and further applications of the approach are discussed. /TRRL/
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/00249831
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Corporate Authors:
An Foras Forbartha
St Martin's House, Waterloo Road
Dublin 4, Ireland -
Authors:
- Wittmann, F H
- Lukas, J
- Publication Date: 1974-12
Language
- English
Media Info
- Features: Figures; References; Tables;
- Pagination: p. 191-197
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Serial:
- MAGAZINE OF CONCRETE RESEARCH
- Volume: 26
- Issue Number: 89
- Publisher: Thomas Telford Limited
- ISSN: 0024-9831
Subject/Index Terms
- TRT Terms: Cement paste; Concrete; Creep; Deformation; Equations; Forecasting; Mathematical models; Shrinkage; Testing; Time
- Old TRIS Terms: Concrete creep; Rate process theory
- ITRD Terms: 4767: Cement paste; 4755: Concrete; 4732: Creep (mater); 5595: Deformation; 132: Forecast; 6473: Mathematical model; 4743: Shrinkage; 5414: Time
- Subject Areas: Highways; Materials; Planning and Forecasting; I32: Concrete; I72: Traffic and Transport Planning;
Filing Info
- Accession Number: 00125202
- Record Type: Publication
- Source Agency: Transport and Road Research Laboratory (TRRL)
- Files: ITRD, TRIS
- Created Date: Nov 18 1975 12:00AM