Galvanizing In Action

Capping Corrosion on Bridges with HDG Steel

From JPCL, January 2021

By John Krzywicki, American Galvanizers Association

Hot-dip galvanizing, a process in which steel components are immersed in a molten bath to form a zinc protective coating, has been used for decades in industrial construction to provide a protective layer from corrosive elements. This article will highlight four bridge projects that employed galvanizing—both with and without duplex protective coating systems—to provide long-term, maintenance-free corrosion protection in different service environments....


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Comment from Michael Halliwell, (3/1/2021, 12:08 PM)

I'm glad Quebec is taking the issue of bridge corrosion seriously, but I have to think that the amount of salt they are using has something to do with the issue. Having traveled in Quebec, the most stunning realization hit me one day going from Ottawa to Gatineau one summer (literally right across the river)...the roads in Quebec are white. They use so much salt that corrosion of bridges and vehicles (there is a standing joke about used cars from Quebec turning to rust) and the salt infiltration into the roads are quite evident. Perhaps they also need to revisit how much they use to assist with the longevity of their infrastructure.


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