STUDIES ON TENSILE STRENGTH OF WET SNOW

With a view to snow accretion on electric wires, railway trains, parabolic antennas and other structures, experimental studies were conducted on the tensile adhesive strength of wet snow onto various kinds of both hydrophilic and hydrophobic materials as a function of free water content of a snow sample ranging from 4 to 30% and compressive stress ranging from 1.5 to 18KN/sq m when the snow sample was initially brought to contact with a material. For a small initial stress the adhesive strength of snow was small, though varying with different material used, and remained constant for each of them regardless of the free water content of snow. Meanwhile, for a larger initial stress, it was large and increase in free water content; namely, for the initial stress more than 15KN/sq m, it had the maximum when the free water content was 12-16%, whereas it was unexpectedly large for hydrophobic materials, being of the same order of magnitude as the one for hydrophilic materials. For a heavily wet snow, a linear relationship was obtained between adhesive strength and initial stress. The adhesive strength of snow onto rubber materials was always small regardless of initial stress and free water content. Direct microscopic observations were made of behaviours of water in contact with a glass plate as it was found in a capillary state, enveloping or inundating wet snow particles. /Authors/

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    • This paper appeared in TRB Special Report 185, Snow Removal and Ice Control Research. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
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    Transportation Research Board

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  • Authors:
    • Wakahama, Gorow
    • Mizuno, Yikiko
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  • Publication Date: 1979

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 18-22
  • Monograph Title: SNOW REMOVAL AND ICE CONTROL RESEARCH
  • Serial:

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Filing Info

  • Accession Number: 00193849
  • Record Type: Publication
  • Files: TRIS, TRB, ATRI, STATEDOT
  • Created Date: Jun 13 1979 12:00AM