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Title: Measurement and interpretation of electrical freezing potential of soils
Authors: Gonzaga University.
Kelsh, D. J.
Taylor, Susan.
Keywords: Electrical freezing potential
Electrical potential
Frost heaving
Laboratory tests
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: CRREL report ; 88-10.
Description: CRREL Report
Abstract: When soil freezes, abrupt changes occur in the electrical potential measured between electrodes buried in frozen vs unfrozen regions. These "freezing potentials" can vary in polarity and magnitude depending on soil type, freezing rate, nature and concentration of electrolytes in the soil-water, etc. This report finds that electrical potential changes of the same order of magnitude as freezing potentials (i.e., about 100 mV) can be generated by simply compressing the soil at room temperature. This suggests that a significant and previously unrecognized source of electrical freezing potential could be due to pressure induced during frost heaving. Because many interrelated variables are responsible for electrical freezing potential, the use of freezing potential to predict corrosivity, water migration, or other physical properties of freezing soils is considered to be inappropriate.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:CRREL Report

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