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

Details

• Creators:
  Tuan, Christopher Y. ; Albers II, Tregan
• Corporate Creators:
  University of Nebraska--Lincoln. Dept. of Civil Engineering
• Subject/TRT Terms:
  • Deicing chemicals
  • Melting
  • Winter maintenance
  • Mechanical tests
  • Experiments
  • Test procedures
• 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.
  More +
• Format:
  PDF
• Funding:
  26-1121-4011-001
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/27475/dot_27475_DS1.pdf
• File Type:
  [PDF - 1.56 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:9d25a86f42cac0a5433f645a71ad3d7809bccde030c0119ff680a13fb3194836