Author(s): A. Jensen; K. V. Hoyland; K. -U. Evers
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Keywords: No Keywords
Abstract: Physical and mechanical properties of level ice and ice ridges have been scaled and determined in laboratory tests. Tempering the ice surface scales the strength of the level ice, the unconsolidated ice rubble is as in nature already at the freezing point and this makes a temperature scaling impossible. Small-scale mechanical tests showed that the ice blocks from the ridge were stronger than the level ice. Salinity and ice temperature profiles were measured. Ice rubble properties in three trapezoidally shaped ridges were investigated. The consolidated layer was cut along the perimeter of a circular plate (d=O. 7 m), and the plate was loaded vertically in order to penetrate through the ice ridge. The force and displacement of the plate were recorded simultaneously. Results from the tests are reported together with material properties derived from a simplified analytical model.
Year: 2000