ADHESION OF ICE TO CONCRETE SURFACES-PRELIMINARY RESULTS

We are involved in a project whose objective is to determine the relative importance of the two components of binding between ice and concrete, namely: the actual microscopic forces between water and substrate molecules; and mechanical interlocking of ice with a porous surface. Tensile interfacial-strength tests of ice-concrete are being performed, as well as a fundamental examination of adsorption isotherms and immersional heats of wetting. Bulk strength tests of ice are also being conducted in order to characterize the samples. Results obtained to date are: (1) Bulk ice compressive strengths (typically 36 Kg/sq cm), tensile ring strengths (13 Kg/sq cm) and flexural strengths (11 Kg/sq cm), show good agreement with previous work of others on lake ice. (2) The interfacial tensile strength, S, for pure ice-concrete shows no dependence upon percentage air entrapment in the concrete in the range 2 to 8% air, suggesting that the total binding force is nearly independent of pore structure. Below -7 deg C, S is nearly independent of temperature, typically 8.3 Kg/sq cm. Above -7 deg C, preliminary results indicate that S is significantly lower, 6.1 Kg/sq cm. A model is proposed by which, with a more complete data base, one should be able to determine the relative importance of the ice-concrete adhesion mechanisms. /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:
    • Ashworth, T
    • Tollefsen, B
    • Weyland, J A
  • Conference:
  • Publication Date: 1979

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 23-29
  • Monograph Title: SNOW REMOVAL AND ICE CONTROL RESEARCH
  • Serial:

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Filing Info

  • Accession Number: 00193852
  • Record Type: Publication
  • Files: TRIS, TRB, ATRI, STATEDOT
  • Created Date: Jun 13 1979 12:00AM