ANALYSIS OF REINFORCED FIBROUS CONCRETE BEAMS

A method has been developed to predict the ultimate strength of concrete beams reinforced with a combination of steel bars and randomly distributed steel fibers. Strengths of three full-size beams were obtained experimentally to verify the analytical method. The method, which applies to beams using a cement-rich mortar mix with the steel fibers, shows good correlation with experimental results. A dynamic bond stress of 333 psi was assumed for the fibers. Fiber lengths were from 1-1/2 in. to 2-1/4 in. and the fiber amount was varied from 1.22, to 1.51, by volume. The test programs showed that: (1) Steel fibrous concrete increased the flexural load capacity of the reinforced beams by about 25,; (2) crack width and crack spacing were less than in a conventional reinforced beam; and (3) the post-cracking stiffness of the fibrous beams was greater than a conventional beam.

  • Corporate Authors:

    American Society of Civil Engineers

    345 East 47th Street
    New York, NY  United States  10017-2398
  • Authors:
    • Henager, C H
    • Doherty, T J
  • Publication Date: 1976-1

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: p. 177-188
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00135053
  • Record Type: Publication
  • Report/Paper Numbers: ASCE #11847
  • Files: TRIS
  • Created Date: Aug 11 1976 12:00AM