PERMEABILITY AND STRENGTH OF AGING SNOW (TEST RESULTS).

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...

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Bibliographic Details
Main Authors: Waterhouse,Robert W., Bunten,Lawrence
Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
Format: Text
Language:English
Published: 1969
Subjects:
Snow
Ice and Permafrost
(*SNOW
COMPRESSIVE PROPERTIES)
AGING(MATERIALS)
SURFACE PROPERTIES
PARTICLE SIZE
DENSITY
PERMEABILITY
TEMPERATURE
CLASSIFICATION
GREENLAND
AGGREGATES(MATERIALS)
REMOTE AREAS
Greenland
Ice
permafrost
Online Access:http://www.dtic.mil/docs/citations/AD0687278
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0687278
Description
Summary: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)

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