DOUBLE POWER LAW FOR BASIC CREEP OF CONCRETE
THE RELATION BETWEEN CREEP, LOADING TIME, AGE OF CONCRETE AND TIME AT WHICH LOADING IS APPLIED CAN BE EXPRESSED BY A LAW WHICH APPLIES ONLY TO CONCRETE NOT EXPOSED TO THE SURROUNDING AIR, BUT IF THE VALUES OF THE MATERIAL PARAMETERS ARE CHANGED, IT CAN ALSO EXPRESS DRYING CREEP AT A GIVEN TIME. THE INTRODUCTION OF THE AGE FUNCTION IN THE EQUATIONS WIDENS THEIR FIELD OF APPLICATION AND INCREASES THE FEASIBILITY OF THE LONG-TERM EXTRAPOLATION OF CREEP DATA. IF IT IS ASSUMED THAT T-T' = 0,001 DAY, THE LAW GIVES ALSO THE CORRECT RELATION BETWEEN THE AGE AND CONVENTIONAL MODULUS OF ELASTICITY (E). IF E WAS REPLACED BY EO, THE AGE FUNCTION OF THE CREEP CURVES OBTAINED BY ANALYSIS OF THE RESULTS WOULD GIVE RISE TO A GREATER DISPERSION; THE AGE FUNCTION E SHOULD THEN BE EXPRESSED BY AN INDEPENDENT FORMULA AND MORE MATERIAL PARAMETERS WOULD BE NEEDED TO OBTAIN A GOOD AGREEMENT WITH THE TEST RESULTS. THE SIMPLICITY OF THE DOUBLE POWER LAW AFFORDS A MARKED ADVANTAGE FOR THE STATISTICAL EVALUATION OF TEST RESULTS.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/00255432
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Authors:
- BAZANT, Z P
- OSMAN, E
- Publication Date: 1976-1
Language
- English
Media Info
- Pagination: 3-11
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Serial:
- MATER CONSTR
- Issue Number: 49
- ISSN: 0025-5432
Subject/Index Terms
- TRT Terms: Age; Concrete; Creep; Drying; Loads; Mathematical models; Modulus of elasticity; Time
- ITRD Terms: 1757: Age; 4755: Concrete; 4732: Creep (mater); 5184: Drying; 5567: Load; 6473: Mathematical model; 5919: Modulus of elasticity; 5414: Time
- Subject Areas: I32: Concrete;
Filing Info
- Accession Number: 01297316
- Record Type: Publication
- Source Agency: Institut Francais des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)
- Files: ITRD
- Created Date: Nov 21 2010 6:18AM