If you live in the snow belt, chances are you have seen a truck with a white plastic tank spraying a brine on the roads before a storm. This new strategy, called "anti-icing," can prevent ice and hard pack from forming. The solution, or brine, is composed of Magnesium or Calcium Chloride. On paper and in laboratory testing, these chemicals are typically 50% less corrosive on steel than road salt. This is a strong selling point when you consider that the same people who operate the salt trucks also maintain the bridges.
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