EVOLUTION IN THE CREEP OF CONCRETE AS A FUNCTION OF MIX DESIGN, STRESS LEVEL AND AGE

L'EVOLUTION DUU FLUAGE DU BETON EN FONCTION DE SA COMPOSITION, DU TAUX DE CONTRAINTE ET DE L'AGE

In the successive editions of the recommendations published by the European committee for concrete (CEB) mathematical expressions are given for the evaluation of concrete creep. As these recommendations have been incorporated in the new standard nbn b15, this estimated value of concrete creep appeared worth studying. A comparative study was conducted between the experimental and estimated creep deformation values of 59 types of concrete. The absolute deformation was analyzed, more precisely the difference between the real and calculated values of this deformation, and also the value of the relative deformation at various ages in relation to the final creep. The time-related evolution in creep, which was proposed in the recommendations dated 1970 (kt coefficient) is acceptable. As regards the creep coefficient (phi) given in the 1975 proposals, it is less acceptable for it gives a less rapid variation in creep as a function of time. From a practical point of view, it seems preferable to keep the 1970 recommendations to evaluate creep deformation instead of adopting a formula more complex in use and which does not give a better time-related creep curve. (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03730891
• Corporate Authors:

  Nouvelle Imprimerie Commerciale et Industrislle

  Lousbergskaai 32
  9000 Ghent,   Belgium 
• Authors:
  • LAMBOTTE, H
  • Mommens, A
• Publication Date: 1977

Language

• French

Media Info

• Features: Figures; Tables;
• Pagination: p. 323-331
• Serial:
  • Annales des Travaux Publics de Belgiquo
  • Issue Number: 4
  • Publisher: Nouvelle Imprimerie Commerciale et Industrislle
  • ISSN: 0373-0891

Subject/Index Terms

• TRT Terms: Age; Aging (Materials); Alternatives analysis; Concrete; Creep; Deformation; Evaluation and assessment; Mathematical analysis; Mix design; Stresses; Tests
• Uncontrolled Terms: Comparative analysis
• Old TRIS Terms: Concrete creep
• ITRD Terms: 1757: Age; 5292: Ageing; 4755: Concrete; 4732: Creep (mater); 5595: Deformation; 9020: Evaluation (assessment); 4714: Mix design; 5575: Stress (in material); 6255: Test
• Subject Areas: Highways; Materials; Planning and Forecasting; I32: Concrete; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00317304
• Record Type: Publication
• Source Agency: Centre de Recherches Routieres (CRR)
• Files: ITRD, TRIS
• Created Date: Feb 6 1981 12:00AM