STRENGTH AND DUCTILITY OF REINFORCED CONCRETE BEAMS EXTERNALLY REINFORCED WITH CARBON FIBER FABRIC

This paper presents results obtained from an experimental study of reinforced concrete beams strengthened in flexure and shear using externally epoxy-bonded bidirectional carbon fiber fabric. Two series of 3 large-scale concrete beam models were built and tested under 4-point bending. The beams of the 2 series were internally reinforced with high-tensile steel for both shear and flexure. One beam for each series was used as a control beam without external reinforcement. The difference between the 2 series related to the amount of internal stirrups and concrete strength. To study effects of external composite reinforcement, variations in the number of layers applied and in the external end arrangements were made. One type of external reinforcement consisted of 2 layers of fabric bonded to the tension face of the beam and partly extended up to the vertical sides. The second arrangement consisted of 4 layers of fabric and supplementary end anchorages. The composite reinforcement led to an increase both in the load-carrying capacity at ultimate and flexural stiffness as compared with control beams. Significant reductions in deflection, curvature, and structural ductility were observed.

• Record URL:
  http://www.concrete.org/Publications/InternationalConcreteAbstractsPortal.aspx.aspx?m=details&i=11539
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/13846957
• Corporate Authors:

  American Concrete Institute (ACI)

  38800 Country Club Drive
  Farmington Hills, MI  United States  48331
• Authors:
  • Bencardino, F
  • Spadea, G
  • Swamy, R N
• Publication Date: 2002-3

Language

• English

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 163-171
• Serial:
  • ACI Structural Journal
  • Volume: 99
  • Issue Number: 2
  • Publisher: American Concrete Institute (ACI)
  • ISSN: 0889-3241
  • Serial URL: http://www.concrete.org/PUBS/JOURNALS/SJHOME.ASP

Subject/Index Terms

• TRT Terms: Beams; Bridge engineering; Carbon fibers; Composite materials; Concrete structures; Ductility; Fiber reinforced concrete; Flexural strength; Material reinforcement; Reinforced concrete; Reinforcing materials; Structural engineering; Structural materials; Structural members
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00921051
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 20 2002 12:00AM