CREEP PREDICTION FOR CONCRETE UNDER MULTIAXIAL STRESS

PREVIOUS TESTS ASSUME THAT FOR THE PREDICTIONS OF CREEP STRAINS RESULTING FROM MULTIAXIAL STRESSES, THE POISSON'S RATIO FOR CREEP IS CONSTANT AND EQUAL TO THE STATIC ELASTIC VALUE. TO PREDICT CREEP UNDER MULTIAXIAL LOADING, THIS ASSUMPTION WAS COMBINED WITH THE RATE OF FLOW METHOD. CREEP PREDICTIONS, ON THE BASIS OF INDEPENDENTLY OBTAINED CONTROLLED DATA, ARE COMPARED WITH THE EXPERIMENTAL STRAINS OBTAINED FROM MULTIAXIALLY LOADED CONCRETE SPECIMENS. ONLY MODERATE STRESS LEVELS WERE CONSIDERED AND ALL SPECIMENS WERE SEALED. THE RESULTS OF THE COMPARISON INDICATE SATISFACTORY AGREEMENT BETWEEN THE PROPOSED METHOD AND THE TEST RESULTS. SECOND-ORDER EFFECTS NOT TAKEN INTO ACCOUNT IN THE ANALYSIS ARE DISCUSSED. A NUMERICAL EXAMPLE IS INCLUDED IN THE APPENDIX TO SHOW THE PROPOSED METHOD. /AUTHOR/

• Supplemental Notes:
  • TITLE NO 69-14
• Authors:
  • Illston, J M
  • Jordahn, I J
• Publication Date: 1972-3

Media Info

• Features: Figures; Photos; References;
• Pagination: p. 158-64
• Serial:
  • Am Concrete Inst Journal & Proceedings
  • Volume: 69
  • Issue Number: 3

Subject/Index Terms

• TRT Terms: Axial loads; Biaxial stress; Concrete; Creep; Creep properties; Loads; Strain (Mechanics); Stresses
• Old TRIS Terms: Biaxial loads; Concrete creep; Strains
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00209688
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 28 1972 12:00AM