THE STRENGTHENING OF CONCRETE BEAMS BY BONDED STEEL PLATES

It may sometimes be necessary to strengthen existing concrete bridges. One method is that of bonding steel reinforcing plates to the structure with epoxy resin. To study the use of this method for strengthening beams in flexure comparative tests have been made on two reinforced concrete beams, one with the addition of a reinforcing plate and one without. The results show that for the type of beam tested the crack widths were substantially reduced (equivalent to a doubling of the applied bending moment permitted by the limit of serviceability) although the ultimate moment was increased by only 18 per cent. The results are also compared with a simple analysis and practical considerations are reviewed. (A) /TRRL/

• Corporate Authors:

  Transport and Road Research Laboratory (TRRL)

  Wokingham, Berkshire  United Kingdom 
• Authors:
  • Irwin, CAK
• Publication Date: 1975

Language

• English

Media Info

• Features: Figures; Photos; References;
• Pagination: 21 p.
• Serial:
  • Issue Number: 160

Subject/Index Terms

• TRT Terms: Adhesion; Beams; Bending moments; Bonding; Bridges; Concrete; Cracking; Deflection; Engineering moments; Epoxy resins; Failure; Pavements; Reinforced concrete; Reinforced concrete bridges; Slabs; Steel; Steel plates; Strength of materials; Structural plates; Structural strengthening; Torque
• Uncontrolled Terms: Plates; Strength development
• Old TRIS Terms: Bridge dynamics
• ITRD Terms: 5942: Adhesion; 3472: Beam; 3455: Bridge; 4755: Concrete; 5211: Cracking; 5586: Deflection; 7468: Epoxy resin; 5520: Failure; 5410: Moment (force); 4794: Reinforced concrete; 3491: Slab; 4542: Steel; 3096: Strengthening (pavement)
• Subject Areas: Bridges and other structures; Design; Highways; Maintenance and Preservation; Pavements; I24: Design of Bridges and Retaining Walls; I61: Equipment and Maintenance Methods;

Filing Info

• Accession Number: 00132268
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: R&D Rept.
• Files: ITRD, TRIS
• Created Date: Jul 13 1976 12:00AM