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Freezing potentials in wet clays. I. Early results
Abstract Slurries of Regina clay were frozen in a cylindrical cell with a Lucite wall 75 mm high and 38 mm o.d. and a stainless steel base, by placing the cell on a cold plate maintained at about −15°C. An electrometer was used to measure potential differences between the steel base and a stainless steel electrode placed in the slurry. At room temperature an initial voltage of 9 to 15 mV was observed. During cooling this potential increased by 1 or 2 mV. When freezing began, the potential decreased by 10 to 20 mV in a time of 15 to 30 minutes; the magnitude of this decrease is called the freezing potential. Tests with a standard electrode indicate that the initial potential is electrokinetic in nature. Comparison with tests on freezing solutions indicate that the freezing potentials are due primarily to selective incorporation of ions. The probable effect on water redistribution in the sample during freezing and on corrosion of metal structures buried in the soil are discussed.
Freezing potentials in wet clays. I. Early results
Abstract Slurries of Regina clay were frozen in a cylindrical cell with a Lucite wall 75 mm high and 38 mm o.d. and a stainless steel base, by placing the cell on a cold plate maintained at about −15°C. An electrometer was used to measure potential differences between the steel base and a stainless steel electrode placed in the slurry. At room temperature an initial voltage of 9 to 15 mV was observed. During cooling this potential increased by 1 or 2 mV. When freezing began, the potential decreased by 10 to 20 mV in a time of 15 to 30 minutes; the magnitude of this decrease is called the freezing potential. Tests with a standard electrode indicate that the initial potential is electrokinetic in nature. Comparison with tests on freezing solutions indicate that the freezing potentials are due primarily to selective incorporation of ions. The probable effect on water redistribution in the sample during freezing and on corrosion of metal structures buried in the soil are discussed.
Freezing potentials in wet clays. I. Early results
S.J. Hanley, Thos.O'D. (author) / Rao, S.Ramachandra (author)
Cold Regions, Science and Technology ; 3 ; 163-168
1980-01-01
6 pages
Article (Journal)
Electronic Resource
English
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