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Title: Ultimate strength of ice
Authors: Butkovich, Theodore R.
Keywords: Ice
Lake ice
Artificial ice
Ice strength
Ice cover strength
Ultimate strength
Publisher: U.S. Army Snow, Ice, and Permafrost Research Establishment.
Engineer Research and Development Center (U.S.)
Description: Research Report
Summary: The crushing and torsional shear strengths of clear lake ice, natural snow ice and commercial artificial ice as well as the tensile strength of commercial ice were measured in the laboratory. Data are tabulated and graphed, and earlier results obtained by different investigators are reviewed. Specimen shape influenced crushing-strength values with machined cylindrical specimens yielding the highest values. Crushing strength parallel to the ice sheet was about 75% of that normal to the ice sheet for clear lake ice, but differences between the 2 orientations were insignificant for natural snow ice. Values obtained for commercial ice were slightly lower than those obtained for clear lake ice. Torsional shear strength for clear lake ice showed a strong temperature dependence as well as anisotropism between shear and orientation, while for snow ice temperature dependence was weak and anisotropism absent. Tensile strength for commercial ice increased linearly with decreasing temperatures to -40°C,; a sudden increase in strength occurred with further temperature lowering.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Research Report

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