Evaluating the Use of High Strength Concrete Pavement Quality Course Made with Steel Fiber and Silica Fume

Steel fiber and silica fume was incorporated in high strength concrete pavement quality course to enhance properties of the structures. It was shown that compressive strength and flexural strength of concrete was increased, due to partial replacement of cement by silica fume. Five percent, 10% and 15% of silica fume was used as a replacement for cement with 0.5%, 1.0% and 1.5% percentage of steel fiber. Optimum percentage of steel fiber was found to be 1.5% by volume of the specimen beyond which balling effect and segregation of the ingredients was observed, and concrete was no longer workable. The properties of concrete in a fresh and hardened state were investigated. A slump cone test was conducted on fresh concrete, and compressive strength tests and flexural strength tests were conducted on hardened concrete at random and one-third positions of steel fiber from the top of the pavement surface. For 1.5% steel fiber and 15% silica fume in high strength concrete, the best possible results were obtained in both positions of steel fiber. Steel fiber in concrete increases the flexural strength and ductility. At one third depth from the top of the pavement surface, it was observed that beams undergo maximum displacement, and an increase in ductility was observed. The thickness of rigid pavements was found by guidelines given in IRC:58-2015. With steel fiber and silica fume used in concrete pavements, the thickness of pavements was considerably reduced.

  • Availability:
  • Authors:
    • Kadam, S S
    • Karjinni, V V
  • Publication Date: 2018-2

Language

  • English

Media Info

  • Media Type: Print
  • Features: Figures; Photos; References; Tables;
  • Pagination: pp 11-18
  • Serial:
    • Indian Highways
    • Volume: 46
    • Issue Number: 2
    • Publisher: Indian Roads Congress
    • ISSN: 0376-7256

Subject/Index Terms

Filing Info

  • Accession Number: 01685520
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 5 2018 3:09PM