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Title: Flexural strength of clear lake ice
Authors: Michigan Technological University. Department of Civil Engineering
Hitch, Robert D.
Keywords: Lake ice
Flexural strength
Ice cover strength
Ice thickness
Temperature effects
Ice crystals
Ice crystal size
Publisher: U.S. Army Snow, Ice, and Permafrost Research Establishment.
Engineer Research and Development Center (U.S.)
Series/Report no.: SIPRE report ; 65.
Description: Technical Report
Summary: Values for the modulus of elasticity and strength of freshwater lake ice in flexure were determined by laboratory experiments on 63 beams tested under various rates of loading at -5°C and -20°C. The results were obtained by measuring the center deflection of the test beam and the load simultaneously. Third point loading was used in order to develop a more favorable distribution of bending stresses in the middle third of the beam than with a simple beam. The experiments indicate that properties of ice vary according to loading rate, temperature, and crystal size. Specifically the results show: (1) lower temperatures give higher values of the modulus of elasticity and strength, (2) ice with larger crystals will have a higher modulus of elasticity but little difference in strength, (3) the rate of loading increases the modulus of elasticity but has little effect on the strength except at low temperatures where higher strength values are obtained with a faster rate of loading.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Technical Report

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