The Failure Process in Columnar-Grained Ice

  1. (PDF, 12 MB)
DOIResolve DOI:
AuthorSearch for:
TypeTechnical Report
Series titleTechnical Paper, Division of Building Research, National Research Council Canada; Issue 369
Physical description164 p.
Subjectice; crackings (breaking); creep; strain
AbstractInformation is presented on the stress, strain, temperature and time dependence of crack formation in columnar-grained ice. It was observed that cracks began to form during creep when the constant compressive stress exceeded about 6 kg/cm[ 2]. For stresses less than about 10kg/cm[2], the cracking activity was confined mainly to the primary creep stage. When the stress was greater than about 12 kg/cm[2], crack formation brought on the failure condition before the secondary creep stage could be established. It is shown that before the onset of failure, the cracking activity was essentially random, and probably involved two independent processes--one with a probability of crack formation dependent on the strain, and one with a probability independent of the strain. Observations are presented on the probability distribution for crack density, width and orientation. The possible effect that modes of deformation and recovery might have on the temperature and strain dependence of the cracking activity is discussed.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number12637
NPARC number20374648
Export citationExport as RIS
Report a correctionReport a correction
Record identifier002e6a67-72d4-4839-8eae-b0a3abbb5875
Record created2012-07-23
Record modified2016-10-03
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)