Structures throughout the transportation industry are exposed to various corrosive environments. From blazing sun and temperatures to UV rays, the hot-dip galvanized coating can withstand many extreme environments. When making use of taxpayer dollars, it is imperative to extend design life and ensure as little costly and disruptive maintenance as possible.
There are four main macro environments transportation infrastructure elements are exposed to, and each has different factors that dictate the corrosivity to galvanized steel. Some structures, such as bridges, are often exposed to more than one of these environments at the same time. These next pages will examine galvanizing's longevity in each of the following:
- In the Atmosphere
- At Ground Level/In Soil
- In Moisture-Rich Environments
- In Concrete