FATIGUE STRENGTH OF EPOXY RESIN ADHESIVE JOINTS AT LOW TEMPERATURES

This report describes a series of fatigue tests in shear on double lap, steel to steel adhesive joints at temperatures down to minus 25 degrees centigrade, the lowest likely to be encountered on bridge sites in the UK. A second series of tests were used to investigate the effect of curing similar lap joints at 0 degrees centigrade on their subsequent static and fatigue strengths. The specimens were constructed using epoxy adhesive. Two types were utilized, a white thixotropic paste, or a white pigmented epoxy resin with aromatic hardener. It was found that the fatigue performance of both adhesives were sufficient for use in UK conditions. Applied peak mean shear stresses which cause failure at endurances up to 50 million cycles were well in excess of those which could be resisted by the concrete in such applications. The 0 degrees centigrade curing temperature, however resulted in a significant reduction in both static and fatigue performance, making it inadvisable to start bonding operations if a period of low temperatures is anticipated during curing.

• Corporate Authors:

  Dundee University, Scotland

  Wolfston Bridge Research Unit
  Dundee, Deeside, ZZ Scotland   
• Authors:
  • MAYS, G C
• Publication Date: 1980-11

Language

• English

Media Info

• Pagination: 46 p.

Subject/Index Terms

• TRT Terms: Adhesion; Bridge decks; Epoxy resins; Fatigue (Mechanics); Glue; Joints (Engineering); Reinforced concrete; Reinforcement (Engineering); Reinforcing materials; Shear strength; Steel; Strength of materials; Temperature; Test procedures
• ITRD Terms: 5942: Adhesion; 3482: Bridge deck; 7468: Epoxy resin; 5579: Fatigue (mater); 4539: Glue; 2998: Joint (structural); 4794: Reinforced concrete; 3471: Reinforcement (in mater); 5531: Shear; 4542: Steel; 5544: Strength (mater); 6722: Temperature; 6288: Test method
• Subject Areas: Bridges and other structures; Materials;

Filing Info

• Accession Number: 00498738
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Sep 30 1990 12:00AM