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Title: Strength data on lake ice
Authors: Frankenstein, Guenther E.
Keywords: Ice
Lake ice
Ice cover strength
Ice bearing strength
Ice strength
Temperature factors
Ice testing
Publisher: U.S. Army Snow, Ice, and Permafrost Research Establishment.
Engineer Research and Development Center (U.S.)
Series/Report no.: SIPRE report ; 59.
Description: Technical Report
Summary: The results of in-place cantilever beam tests and small-beam tests with center loading, conducted in 1956-57 on lake ice in Minnesota, Wisconsin, and Michigan, are reported; the testing procedures and equipment used are described; and the data are tabulated and graphed. The tests were made on clear ice, snow-ice (dense, medium, and rough), and a combination of clear ice and snow-ice. The flexural strength of clear ice was high when the bottom was in tension and low when the surface was in tension. The flexural strength of snow-ice was unusually high, especially when the surface ice was put in tension. The flexural strength of the combination of clear ice and snow-ice was approximately the same whether the surface was in tension or compression, and higher than that of cold clear ice. No significant relation was found between temperature and strength. The strength values in small-beam tests were much higher than in in-place beam tests, but had a wider scatter. The flexural strength of clear ice in late winter or early spring with the surface layer in tension decreases at a faster rate than with the surface layer in compression.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Technical Report

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