Development of a mechanical rocker test procedure for ice melting capacity evaluation.
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Development of a mechanical rocker test procedure for ice melting capacity evaluation.

Filetype[PDF-1.56 MB]


English
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Details:

  • Creators:
  • Corporate Creators:
    University of Nebraska--Lincoln. Dept. of Civil Engineering
  • Subject/TRT Terms:
  • Publication/ Report Number:
    NDOR Project: M322
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    Nebraska
  • Corporate Publisher:
    Nebraska. Dept. of Roads
  • Abstract:
    During Phase 2 of the NDOR deicing chemicals performance evaluation project (No. SPR-P1(10) P328), a

    simple and economical test using a martini shaker to evaluate ice melting capacity of liquid deicers showed

    good potential to become a standardized test. There is a need to support an internal effort at NDOR to further

    develop the shaker test into a deicing chemicals test protocol. A number of parameters of the testing

    procedure need to be precisely specified to ensure repeatability and accuracy. The main objective of this

    research is to transform the shaker test into a gold standard for ice melting capacity evaluation of liquid

    deicing chemicals. This research focused on the use of a mechanical rocker for shaking instead of shaking by

    hand which can introduce significant error due to the variability of shaking. In this test, 33 ice cubes of 1.3-

    mL each and 30-mL of liquid deicing chemical are mixed in a vacuum sealed thermos on a mechanical rocking

    platform. The rocker is set to a frequency of 90 RPM with a tilt angle of ±10°. The time duration for rocking

    is set for 15 minutes. Styrofoam dish or cup should be used for measuring the mass of ice. With these test

    parameters, a standard deviation of 1.15% has been achieved when testing with Apex Meltdown™. This

    Mechanical Rocker Ice Melting Test procedure will be submitted to selected Departments of Transportation

    and Clear Roads for parallel testing and feedback. The Mechanical Rocker Ice Melting Test can be used for

    screening of new deicing products submitted to NDOR by vendors each year. Once validated by other

    independent organizations, the Mechanical Rocker Ice Melting Test may be proposed to the AASHTO for

    adoption for ice melting capacity evaluation of liquid deicing chemicals.

  • Format:
    PDF
  • Funding:
    26-1121-4011-001
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