Chemistry of Deicing Roads: Breaking the Bond between Ice and Road
Publication: Journal of Transportation Engineering
Volume 113, Issue 1
Abstract
The rates for breaking the bond between ice and road surfaces are measured as a function of temperature, type of road surface, and chemical application. Surfaces of asphalt, concrete, and brick give indistinguishable results. Chemicals used include sodium chloride, calcium chloride, urea, and calcium magnesium acetate (CMA). The results are analyzed in terms of the maximum areas undercut and the rates at which the areas are undercut. The areas for all chemicals can be correlated with arguments based on freezing point depression. The rates seem consistent with diffusion controlled melting.
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References
1.
Chollar, B. H. (1984). “Federal highway administration research on calcium magnesium acetate—an alternative deicer,” Public Roads, 47(4), 113–118.
2.
Cussler, E. L., Diffusion, Cambridge University Press (1984).
3.
Dunn, S. A., and Schenk, R. V. (1980). “Alternative highway de‐icing chemicals,” Federal Highway Administration Report FHWA‐RD‐79–109.
4.
Glancy, A. B. (1986). “Preparation of high quality calcium magnesium acetate using a pilot plant process,” Federal Highway Administration Report FHWA/RD‐86/006.
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Schenk, R. V. (1983–1985). “Ice melting characteristics of calcium magnesium acetate,” Federal Highway Administration, unnumbered final report.
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Sinke, G. C., and Mossner, E. H. (1981). “Laboratory comparison of calcium chloride and rock salt as ice removal agents,” Transportation Research Record, 598, 54–57.
Information & Authors
Information
Published In
Journal of Transportation Engineering
Volume 113 • Issue 1 • January 1987
Pages: 15 - 26
Copyright
Copyright © 1987 ASCE.
History
Published online: Jan 1, 1987
Published in print: Jan 1987
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