Pressure-temperature effects on the compressive behavior of laboratory-grown and iceberg ice

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DOIResolve DOI: http://doi.org/10.1016/S0165-232X(02)00077-0
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TypeArticle
Journal titleCold Regions Science and Technology
Volume36
Issue1-3
Pages2536; # of pages: 12
Subject1; Activation Energy; Creep; Hydrostatic Pressure; Ice
AbstractThe compressive behavior of freshwater ice subjected to a nominally constant compressive stress of 15 MPa while under confinement is investigated. Cylindrical ice specimens 155 mm in length and 70 mm in diameter were machined from polycrystalline ice made with ultra pure water and from genuine iceberg ice. The confining pressures ranged from 10 to 65 MPa. Test temperature varied from about -5 to -26 oC. The activation energy for the laboratory ice is determined at five distinct levels of hydrostatic pressure: 15, 35, 55, 65 and 70 MPa. It displays a substantial increase above 55 MPa. A similar increase in minimum strain rate is observed, which becomes more significant at higher temperatures. Our data are consistent with those of other investigators obtained from constant strain rate experiments. The iceberg ice tends to show a higher scatter than the laboratory ice, and is generally more compliant. Some implications for the behavior of this material upon fast compressive loading are discussed.
Publication date
LanguageEnglish
Peer reviewedNo
NPARC number12339268
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Record identifier15013374-91ff-47b0-958d-59782a9be0b2
Record created2009-09-11
Record modified2016-05-09
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