BONDED EXTERNAL REINFORCEMENT FOR STRENGTHENING CONCRETE BRIDGES

The authors outline the general principles of bonded external reinforcement and stress the importance of establishing the cause of defects (inadequate reinforcement, poor concrete, excessive deflections, corrosion of the internal reinforcement, structural damage) when the use of additional reinforcement is considered. The characteristics of suitable adhesives, such as epoxy resin, are examined, and design considerations covering shear stresses, plate thickness and width, location and anchorage of plate ends, jointing and lapping of plates, and durability and fatigue are presented. Details are given of surface preparation methods for concrete and steel, preparation and curing of bonded joints, quality control and materials testing, and inspection and maintenance. Some examples of bridge strengthening in the United Kingdom are given. (TRRL)

• Corporate Authors:

  Dundee University

  Dundee, ZZ Scotland   
• Authors:
  • MAYS, G C
  • Raithby, K D
• Publication Date: 0

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: 70 p.

Subject/Index Terms

• TRT Terms: Adhesion; Adhesives; Anchorages; Bridges; Concrete; Concrete bridges; Defects; Deflection; Design; Durability; Epoxy resins; Fatigue (Mechanics); Fatigue (Physiological condition); Glue; Joints (Engineering); Materials tests; Plates (Engineering); Quality control; Reinforcement (Engineering); Reinforcing materials; Repairing; Shear strength; Shear stress; Steel; Strength of materials; Strengthening (Maintenance); Stresses; Surface treating; Tests; Thickness; Width
• Uncontrolled Terms: Outside; Plate; Plates
• Geographic Terms: United Kingdom
• Old TRIS Terms: Bonded external reinforcement; Joint
• ITRD Terms: 5942: Adhesion; 3420: Anchorage; 3455: Bridge; 4755: Concrete; 5238: Defect (tech); 5586: Deflection; 9011: Design (overall design); 5910: Durability; 7468: Epoxy resin; 5579: Fatigue (mater); 4539: Glue; 2998: Joint (structural); 9058: Outside; 9111: Reinforcement (gen); 3471: Reinforcement (in mater); 3635: Repair; 5531: Shear; 3491: Slab; 4542: Steel; 5544: Strength (mater); 5575: Stress (in material); 6255: Test; 5933: Thickness; 8119: United Kingdom; 6479: Width
• Subject Areas: Bridges and other structures; Design; Highways; Maintenance and Preservation; I24: Design of Bridges and Retaining Walls; I61: Equipment and Maintenance Methods;

Filing Info

• Accession Number: 00396239
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Jan 31 1986 12:00AM