PROBLEMS OF HIGH STRENGTH BOLTED CONNECTIONS IN STEEL CONSTRUCTION. PROTECTION OF BOLTS, NUTS AND WASHERS

The report describes tests with high strength fasteners which were unprotected or protected by zinc or cadmium plating with and without additional passivation, in sulphur dioxide and saline atmospheres. The weathering tests of the bolt categories in the Kesternich apparatus and salt spray cabinet were made with 5 groups of assembled connections, the faying surfaces of which were unprotected or protected by metal spraying with aluminum or zinc or by coating with alkaline silicate zinc dust paint, and the external surfaces of which were left unprotected or, for comparison, had been given a coating of high build red lead paint. The degree of corrosion and the pretension losses in the bolts during the period of weathering were recorded. The results are discussed and recommendations made. The report also deals with methods of tightening and mentions the results of similar tests made by other bodies.

• 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: 1972-4

Media Info

• Features: Figures; Tables;
• Pagination: 45 p.

Subject/Index Terms

• TRT Terms: Bolted joints; Bolts; Coatings; Construction joints; Corrosion protection; High strength; Protective coatings; Tests; Weathering
• Old TRIS Terms: High strength bolts; Question d90
• Subject Areas: Construction; Railroads;

Filing Info

• Accession Number: 00052902
• Record Type: Publication
• Source Agency: International Union of Railways
• Report/Paper Numbers: D90/RP 6/E
• Files: TRIS
• Created Date: Feb 16 1977 12:00AM