EFFECTS OF TWO YEARS WEATHERING ON HIGH STRENGTH FRICTION GRIP BOLTED JOINTS

This report gives the results obtained over the first two years of a ten year study of the effects of weathering on the performance of high strength friction grip bolted joints. Specimen joints, having different surface treatments applied to the plies, have been exposed to an aggressive environment for periods of up to two years. After exposure they have been tested to determine changes to the slip factor and load-slip relationship resulting from corrosion of the joint interfaces. It was found that there was a general improvement in slip factor after exposure, but slip, once initiated, developed more rapidly in weathered joints. The condition of the joint interfaces and bolts, after exposure, is described and details are given of the variation in bolt tension during the exposure period.(a) /TRRL/

• Corporate Authors:

  Transport and Road Research Laboratory (TRRL)

  Wokingham, Berkshire  United Kingdom 
• Authors:
  • Moss, D S
• Publication Date: 1976

Language

• English

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: 27 p.

Subject/Index Terms

• TRT Terms: Bolts; Corrosion; Friction; High strength; Interfaces; Joints; Loads; Slip form pavers; Surface treating; Tension; Weathering
• Old TRIS Terms: Friction bolt; High strength bolts; Joint; Slip forms
• ITRD Terms: 5252: Aggression (mater); 5252: Aggressivity; 5252: Attack (mater); 3888: Bolt; 5252: Corrosion; 5252: Corrosivity; 5452: Friction; 5537: High strength; 2998: Joint (structural); 5252: Rust; 5502: Tension; 5281: Weathering
• Subject Areas: Bridges and other structures; Design; Geotechnology; Highways; Materials; I24: Design of Bridges and Retaining Walls; I34: Steels and Metals;

Filing Info

• Accession Number: 00138938
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: TRRL SR 191 UC
• Files: ITRD, TRIS
• Created Date: Nov 17 1976 12:00AM