Ductility of Steel Fibre Reinforced Concrete Exposed to High Temperature

This paper describes an attempt to assess ductility of steel fiber reinforced concrete exposed to high temperatures. A high number of cube, cylinder, prism and 36 beam specimens were tested to assess compressive strength, tensile strength, modulus of rupture, axial and curvature ductility factors, etc. Specimens were cast using various fiber volume fractions and fiber lengths. Different percentages of conventional steel reinforcements were provided in beam specimen. All the specimens were heated in an electric furnace to various level of temperature (up to 500 degree Celsius) for four hours and then cooled to room temperature before testing. The beams were tested under two point symmetrical loading on simple supports. Analysis was carried out on experimental data and expressions to determine the compressive strength, tensile strength, modulus of rupture determined. Furthermore, a stress-strain relationship under direct compressions was developed. Finally, the effect of temperature on axial and curvature ductility factors was assessed. As sufficient data was not available to compare the relative efficiency of conventional reinforcements to steel fiber reinforced concrete in connection to ductility, such knowledge of relative efficiency may be useful for devising design methods in this regard. In general a good agreement between theoretical and experimental results were observed.

Language

  • English

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 113-125
  • Monograph Title: Role of Concrete in Sustainable Development

Subject/Index Terms

Filing Info

  • Accession Number: 01010811
  • Record Type: Publication
  • ISBN: 0727732471
  • Files: TRIS
  • Created Date: Nov 28 2005 11:37AM