The Effects of Increased Salt Usage on the Chloride Concentration in South Dakota Department of Transportation Bridges and Roads
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The Effects of Increased Salt Usage on the Chloride Concentration in South Dakota Department of Transportation Bridges and Roads



English
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Details:

  • Creators:
    Marks, Kenneth E
  • Corporate Creators:
    South Dakota. Department of Transportation. Office of Research
  • Subject/TRT Terms:
  • Resource Type:
    Tech Report
  • Geographical Coverage:
  • Corporate Publisher:
    South Dakota. Department of Transportation
  • Abstract:
    Due to the concern for public safety during the 1988 Legislative Session, a law (HB 1162) was passed to create a winter safe highway maintenance program which included a special fund to be used for the increased salting of State highways and bridges. Departmental policy and standards were developed to apply more salt for the increased removal of snow and ice. Due to this law and changes in policy, there has been a significant increase in the amount of salt bought by the South Dakota Department Of Transportation (SDDOT). The SDDOT bought 97%, and 144% more salt the first two years after the new policy compared to the year before the new policy. A table showing the amount of salt bought each year since 1972 is shown in Appendix A. After that legislative action, a project was developed to see what effect the increased use of salt would have on bridges and highways. Fifty-three bridges of three types and 19 sections of highways were sampled. Each of the bridges or highways sections had eight samples removed for analysis. The first samples were taken in the fall of 1988 and the second set of samples .wJ,./}i(;/ taken in the summer of 1989. The samples were checked for chloride concentration (pounds per cubic yard) by Atomic Absorption Spectroscopic Analysis.
  • Format:
    PDF
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  • File Type:
    Filetype[PDF-282.84 KB]

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