United States Department of Transportation
i
Evaluation of the Effects of Deicers on Concrete Durability [Research Brief]
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2018-07-01
[PDF-292.88 KB]
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Abstract:Wisconsin experiences approximately 13 to 55 winter events per year, with annual snowfall ranging from 15 to 132 inches. Wisconsin has traditionally used solid rock salt (NaCl) as the primary deicing chemical in winter maintenance. However, recent changes regarding the use of liquid anti-icing solutions and newer deicing chemicals have raised concerns about the potential impacts on concrete pavement durability. Previous laboratory studies indicated that these new chemicals, especially calcium chloride (CaCl2) and magnesium chloride (MgCl2), cause more damage to concrete than rock salt does. Anti-icing prior to winter events causes much more rapid ingress of the deicing chemicals because the dry concrete surface absorbs the anti-icing solution very readily. The objectives of this research were to investigate the use of deicing and anti-icing materials in Wisconsin and the effects they have on concrete pavement durability.
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