Experimental Investigation of the Contribution of Bonded C-FRP Jackets to Shear Capacity of RC Beams

This paper addresses the issue of the shear capacity of concrete elements with T Cross-section strengthened externally by applied epoxy bonded Carbon Fiber Reinforced Polymer (C-FRP) jackets. The experimental program includes four beams constructed and tested for this purpose. Two of them were rectangular cross-sections and two were T-beams. One specimen pf each pair was strengthened with bonded C-FRP jackets. The rectangular one was totally wrapped around the cross-section and in the case of the T-beam C-FRP jackets wrapped the vertical side and the width of the web (U-jacket). All beams were tested in monotonic increased loading until total failure. The strengthened beams exhibited an increase of the maximum shear strength equal to 300% for the totally wrapped rectangular concrete member and 39% for the U-wrapped T-beam in respect to the corresponding non-strengthened beams. The strengthened beam with slab (T-beam) exhibited shear diagonal cracks and quite brittle shear failure. Premature debonding failure at the concrete—C-FRP adhesive was observed. On the contrary the entire shear performance of the strengthened rectangular beam was substantially improved in comparison to the non-strengthened rectangular one and it exhibited flexural and rather ductile response while failure finally appeared at a high level of loading and deformation along with C-FRP jackets rupture.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0727732471
• Corporate Authors:

  Thomas Telford Limited

  London,   United Kingdom 
• Authors:
  • Karayannis, C G
  • Chalioris, C E
• Conference:
  • Proceeding of the International Symposium Dedicated to Professor Surendra Shah, Northwestern University, USA
  • Location: Dundee Scotland, United Kingdom
  • Date: 2003-9-3 to 2003-9-4
• Publication Date: 2003

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References;
• Pagination: pp 689-696
• Monograph Title: Role of Concrete in Sustainable Development

Subject/Index Terms

• TRT Terms: Beams; Concrete; Debonding; Epoxy coatings; Failure analysis; Fiber reinforced concrete; Flexural strength; Reinforced concrete; Shear strength; Shear tests; Width
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 01010844
• Record Type: Publication
• ISBN: 0727732471
• Files: TRIS
• Created Date: Nov 29 2005 1:59PM