The inclusion of steel fibers in a concrete matrix has a marked effect on workability. A systematic approach was followed and a mix design method for fiber-reinforced concrete was developed. The flexural strength properties of steel-fiber-reinforced concrete were investigated. Test data indicated that the ultimate flexural strength increased by an average of 19% by using 2% by volume of fibers. However, toughness increased 9 times by using 1% by volume of fibers. Laboratory tests were conducted on concrete overlays subjected to simulated temperature effects. Bond between the base slab and the overlay was prevented for different lengths at the joint. Test results indicated that improvement of cracking resistance was obtainable by increasing the length of the unbonded portions of the overlay. Examination of steel-fiber-reinforced-concrete overlays in an outdoor test installation indicated that the inclusion of steel fibers in a concrete overlay reduced the width of reflection cracking. The inclusion of fibers had no effect on the temperature gradient within the overlay. The investigation concluded that the inclusion of steel fibers in concrete overlays improved the performance to a limited degree. /Author/

  • Corporate Authors:

    Portland Cement Association

    5420 Old Orchard Road
    Skokie, IL  United States  60077
  • Authors:
    • Hanna, A N
  • Publication Date: 1977

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 18 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00153118
  • Record Type: Publication
  • Report/Paper Numbers: Bulletin RD049.01P Monograph
  • Files: TRIS
  • Created Date: Jun 22 1977 12:00AM