Characterization of slip resistance for metallized-galvanized faying surfaces in slip-critical joints

C. D. Annan, A. Chiza, A. El Refai, E. Levesque

Research output: Contribution to conferencePaperpeer-review

Abstract

Exposed structural steel surfaces, particularly in steel girder bridge construction, require coating protection from harsh environmental conditions to preserve structural integrity and provide longevity. Consequently, galvanization and metallization have evolved as effective long-term protection. Practical situations exist where galvanized secondary structural members are joined to primary elements that are metallized in a slip-critical connection. Design provisions for bolted connections in contemporary standards, such as the Canadian Highway Bridge Design Code CAN/CSA S6-06, do not specify slip coefficient for slip-resistant connections with galvanized-metallized faying surfaces (i.e. one connected face metallized and the other face galvanized). Bridge fabricators are thus compelled to mask off connection faying surfaces before applying the protective coatings on structural members. This practice is time-consuming, expensive, and exposes the connection to corrosion before assembling. In this investigation, the resistance of slip-critical joints having metallized-galvanized faying surfaces is characterized in view of the Canadian steel bridge design standard. The mean slip coefficient is determined from compression test regime and for varying parameters of coating thickness, surface conditions, and bolt preload.

Original languageEnglish
Pages2671-2681
Number of pages11
Publication statusPublished - 2013
EventAnnual Conference of the Canadian Society for Civil Engineering 2013: Know-How - Savoir-Faire, CSCE 2013 - Montreal, Canada
Duration: May 29 2013Jun 1 2013

Other

OtherAnnual Conference of the Canadian Society for Civil Engineering 2013: Know-How - Savoir-Faire, CSCE 2013
Country/TerritoryCanada
CityMontreal
Period5/29/136/1/13

ASJC Scopus subject areas

  • General Engineering

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