Author(s): Jacqueline A. Richter-Menge
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Keywords: No Keywords
Abstract: Unconfined, uniaxial compressive strength tests were performed on frazil sea ice samples collected in the Weddell Sea, Antarctica. The tests were done at constant strain rates ranging from 10-2 to 10-5 s-1 and temperatures of -5 and -10C. These conditions covered the brittle-to-ductile transition of this ice type. Results of these tests are presented and the compressive strength of the frazil samples is compared to the strength of transversely isotropic, columnar saline ice loaded perpendicular to the growth direction. This analysis indicates that the strength of the frazil and columnar ice is comparable at a given porosity. We discuss this finding with respect to the variations in the structural characteristics of each ice type. In particular, we consider the influence of grain size and the spacing of brine inclusions.
Year: 1992