Accession Number:

AD0687278

Title:

PERMEABILITY AND STRENGTH OF AGING SNOW (TEST RESULTS).

Descriptive Note:

Special rept.,

Corporate Author:

COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H

Personal Author(s):

• Waterhouse,Robert W.
• Bunten,Lawrence

Report Date:

1969-03-01

Pagination or Media Count:

24.0

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

Descriptors:

• (*SNOW
• COMPRESSIVE PROPERTIES)
• AGING(MATERIALS)
• SURFACE PROPERTIES
• PARTICLE SIZE
• DENSITY
• PERMEABILITY
• TEMPERATURE
• CLASSIFICATION
• GREENLAND

Subject Categories:

• Snow, Ice and Permafrost

Distribution Statement:

APPROVED FOR PUBLIC RELEASE