PROBLEMS OF HIGH STRENGTH BOLTED CONNECTIONS IN STEEL CONSTRUCTION. THE EFFECT OF WEATHERING ON ASSEMBLED HIGH STRENGTH BOLTED CONNECTIONS UNDER VARIOUS CONDITIONS

The report describes tests with unprotected and protected faying surfaces of bolted test specimens, exposed, after assembly, to accelerated weathering in an SO sub 2 atmosphere in the Kesternich apparatus and subsequently subjected to a static tensile test of short duration in order to determine the coefficient of friction. The weathering of the externally unprotected test specimens during 20-60 test cycles should show the effect of increased corrosion on the coefficient of friction and on the losses in pretension of the bolts. The report also describes the determination of friction coefficients of faying surfaces treated with alkaline silicate zinc dust paint, exposed, prior to assembly, to natural weathering in a marine atmosphere for several months and it assesses studies made by other bodies concerning the various effects of weathering before and after the assembly of high strength bolted connections.

• Supplemental Notes:
  • Restrictions on the use of this document are contained in the explanatory material.
• Corporate Authors:

  International Union of Railways

  Office of Research and Experiments
  Utrecht,   Netherlands 
• Publication Date: 1973-4

Media Info

• Features: Appendices; Figures; Photos; References; Tables;
• Pagination: 30 p.

Subject/Index Terms

• TRT Terms: Bolted joints; Bolts; Coatings; Construction joints; High strength; Protective coatings; Weathering
• Old TRIS Terms: High strength bolts; Question d90
• Subject Areas: Bridges and other structures; Materials; Railroads;

Filing Info

• Accession Number: 00052523
• Record Type: Publication
• Source Agency: International Union of Railways
• Report/Paper Numbers: D90/RP 7/E
• Files: TRIS
• Created Date: Jun 24 1974 12:00AM