REINFORCED CONCRETE BEAMS WITH STEEL PLATES GLUED TO THEIR SOFFITS: PREVENTION OF PLATE SEPARATION INDUCED BY FLEXURAL PEELING

Reinforced concrete beams are strengthened or stiffened by gluing mild steel plates to the tension face of the beam. However, experimental tests have shown that these externally bonded plates have a tendency to peel away after the formation of shear diagonal cracks or when the curvature in the beam is increased. Fifty seven plated reinforced concrete beams have been tested to study peeling induced by increasing curvature; in these tests, the geometry and material properties of the beams were varied, and the reinforced concrete beams were subjected to precracking and precambering, as might occur in an existing structure. A method has been derived of determining the moment at which peeling starts (serviceability limit) and the moment that causes complete separation of the plate (ultimate limit). This method, which depends on the flexural rigidity of the plated beam, the thickness of the plate and the tensile strength of the concrete, can be used to adjust the size and extent of plating so that flexural peeling does not occur under the design load (a).

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/09091386
• Corporate Authors:

  University of Adelaide

  Department of Civil and Environmental Engineering
  Adelaide, South Australia  Australia  5005
• Authors:
  • OEHLERS, D J
• Publication Date: 1988-8

Language

• English

Media Info

• Pagination: 34 p.
• Serial:
  • Issue Number: R80

Subject/Index Terms

• TRT Terms: Axial loads; Beams; Cracking; Curvature; Design; Flexure; Glue; Loads; Reinforced concrete; Shear strength; Steel; Stiffness; Structural plates; Tension
• Uncontrolled Terms: Axial; Peeling tests; Plate; Rigid
• ITRD Terms: 6405: Axis; 3472: Beam; 5211: Cracking; 5586: Deflection; 2870: Degree of curvature; 9011: Design (overall design); 4539: Glue; 5567: Load; 6268: Peeling test; 4794: Reinforced concrete; 5531: Shear; 3491: Slab; 4542: Steel; 5931: Stiffness; 5502: Tension
• Subject Areas: Design;

Filing Info

• Accession Number: 00487263
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS, ATRI
• Created Date: Sep 30 1989 12:00AM