United States Department of Transportation
i
and deicing salt cocktails.
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2016-05-01
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[PDF-2.30 MB]
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Abstract:Deicing salts are widely used for anti-icing and de-icing operations in pavements. While historically sodium chloride may have been the
deicer most commonly used, a wide range of deicing salts have begun to be used to operate at lower temperatures, to “stick to the road
better” and to improve other aspects of performance such as environmental impact or corrosion resistance. It has been observed that
some chloride based deicing salts can react with the calcium hydroxide in the mixture resulting in the formation of calcium oxychloride
an expansive phase that can damage concrete pavements, especially at the joints. This report describes the two main objectives of this
work. First, the report documents the development a standardized approach to use low temperature differential scanning calorimetry
(LT-DSC) to assess the influence of cementitious binder composition on the potential for calcium oxychloride formation. Second, this
work will assess the influence of blended salt cocktails on the formation of calcium oxychloride.
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