FLEXURAL STRENGTHENING OF REINFORCED CONCRETE BEAMS INVOLVING THE ADDITION OF NEW CONCRETE

Eleven reinforced concrete beams were tested to failure to study flexural repairs involving the addition of new concrete by the re-casting technique. The test programme comprised the investigation of methods of casting and compacting the new material, the performance of additional tensile reinforcement, the repair of the compression zone while under load, the load conditions, eg static, staticially repeated and dynamic loads, and the effect of the shear span ratio. The repaired beams were compared to unrepaired control beams wirh respect to deflections, concrete and steel strains, cracking, ultimate strengths, and modes of failure. Test results indicate that the flexural strength can be fully restored by the examined repair processes under predominantly static loads. However, under dynamic loading a beam repaired by re-casting in the tension zone to embed additional bars exhibited a performance poorer than the control beam. (A)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/14665123
• Corporate Authors:

  Institution of Structural Engineers

  11 Upper Belgrave Street
  London,   United Kingdom  SW1X 8BH
• Authors:
  • CLIMACO, JCTS
  • REGAN, P E
• Publication Date: 2001-12-4

Language

• English

Media Info

• Features: References;
• Pagination: p. 25-30
• Serial:
  • Structural Engineer
  • Volume: 79
  • Issue Number: 23-4
  • Publisher: Institution of Structural Engineers
  • ISSN: 1466-5123

Subject/Index Terms

• TRT Terms: Beams; Bearing capacity; Concrete tests; Deflection; Field tests; Flexural strength; Loads; Material reinforcement; Reinforced concrete; Repairing; Strength of materials; Structural tests
• ITRD Terms: 3472: Beam; 6269: Beam test; 3085: Bearing capacity; 5586: Deflection; 6226: In situ; 5567: Load; 4794: Reinforced concrete; 9111: Reinforcement (gen); 3635: Repair; 5544: Strength (mater)
• Subject Areas: Bridges and other structures;

Filing Info

• Accession Number: 00922315
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Apr 2 2002 12:00AM