PERMEABILITY AND STRENGTH OF AGING SNOW (TEST RESULTS).

Abstract

Old snow or ice disaggregated at -10 degrees C or below produces a noncohesive aggregation of granular particles resembling sand. In contrast to rock particles, the surface properties of ice granules are not passive. Such aggregations are metamorphic, exhibiting a broad range of property changes in a relatively short time. Two mechanical properties, compressive strength and air permeability, characterize this behavior. Results of tests with disaggregated snow reported here show this time dependency of these properties -- their density and temperature dependency is also indicated. The initial noncohesive aggregations are characterized by density, mean particle size and the standard geometric deviation of the size distribution. (Author)

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1969
Accession Number
AD0687278

Entities

People

  • Lawrence Bunten
  • Robert W. Waterhouse

Organizations

  • Cold Regions Research and Engineering Laboratory

Tags

DTIC Thesaurus Topics

  • Compressive Strength
  • Contrast
  • Mechanical Properties
  • Particle Size
  • Particles
  • Permeability
  • Physical Properties
  • Standards
  • Surface Properties

Readers

  • Aerosol Science/Aerosol Physics
  • Mechanical Engineering/Mechanics of Materials.
  • Polar and Arctic Studies