The Initial creep of columnar-grained ice. Part I. Observed behavior. Part II. Analysis

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TypeArticle
Journal titleCanadian Journal of Physics
ISSN0008-4204
Volume43
Pages14141422; # of pages: 9
Subjectice; creep; strain; compressive stresses
AbstractPreviously undeformed columnar-grained ice exhibits a period of increasing or constant creep rate during the transient creep stage when loaded in simple compression perpendicular to the long axis of the columns. It is shown that this behavior is associated with the formation of small-angle boundaries and internal cracks. Creep strain beyond 0.25% for first load tends to a power-law dependence on time. On reload, specimens exhibit a normal transient creep behavior and have, initially, a lower resistance to deformation than for first load. With deformation, this resistance increases so that the reload creep curves cross the first load curves at about 0.2% creep. For reload, creep strain less than about 0.25% and greater than about 0.2% appears to have a power-law dependence on time with exponent about equal to that for first load.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
IdentifierDBR-RP-261
NRC number8475
1317
NPARC number20378618
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Record identifier814601d9-d782-4f57-ae0d-aaa4b10039dc
Record created2012-07-24
Record modified2016-05-09
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