FATIGUE BEHAVIOR OF STEEL FIBER REINFORCED CONCRETE IN UNIAXIAL AND BIAXIAL COMPRESSION

The fatigue strength and behavior of plain and fiber concrete are investigated. Seventy-two steel reinforced concrete specimens, with 1 volume percent of 25-mm (1-in)-long fibers, were tested under compression fatigue loading. The S-N curves were obtained under four stress ratios of 0 (uniaxial), 0.2, 0.5, and 1.0, resulting in a series of fatigue stress envelopes for fiber concrete. Deformations in all three principal directions were measured. The S-N curves, strength envelopes, failure modes, and cyclic deformations of fiber concrete are compared to those of plain concrete. It is found that addition of fibers does not increase the endurance limit but is beneficial above the endurance limit in the low-cycle region. Furthermore, adding fibers to concrete increases its ductility, and changes failure modes from splitting-type to faulting-type. All these phenomena can be explained by the development of microcracks in the cement-sand matrix and at the bond surfaces between the matrix and aggregates.

• Record URL:
  http://www.concrete.org/Publications/InternationalConcreteAbstractsPortal.aspx.aspx?m=details&i=1415
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/13846872
• Corporate Authors:

  American Concrete Institute

  P.O. Box 19150, Redford Station, 22400 Seven Mile Road
  Detroit, MI  United States  48219
• Authors:
  • Yin, W
  • Hsu, TTC
• Publication Date: 1995-1

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 71-81
• Serial:
  • ACI Materials Journal
  • Volume: 92
  • Issue Number: 1
  • Publisher: American Concrete Institute (ACI)
  • ISSN: 0889-325X
  • Serial URL: https://www.concrete.org/publications/acimaterialsjournal.aspx

Subject/Index Terms

• TRT Terms: Biaxial stress; Compressive strength; Concrete; Deformation; Ductility; Failure; Fatigue (Mechanics); Fibers; Loads; Repeated loads; Strain (Mechanics); Stresses; Tests
• Old TRIS Terms: Biaxial loads; Failure mode
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00674176
• Record Type: Publication
• Files: TRIS
• Created Date: Feb 28 1995 12:00AM