Evaluation of the freezing-thawing effect in sand-silt mixtures using elastic waves and electrical resistivity

Mingu Kang, Jong-Sub Lee

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

The purpose of this study is to investigate the effects of the freezing-thawing process on soils using elastic waves and electrical resistivity. Sand-silt mixtures with different silt fractions of 0%, 10%, 20%, 30%, 40%, 60%, 80%, and 100% weight at a fixed degree of saturation of 40% are placed in a nylon freezing cell. The temperature of the sand-silt mixtures decreases from 20 °C to - 13.5 °C during freezing and increases from - 13.5 °C to 20 °C during thawing. Bender elements and piezo disk elements are used to continuously measure shear and compressional waves, respectively, during freezing and thawing. Four circular electrodes made of stainless steel are used to measure electrical resistivity. For the temperature measurement, a thermocouple is inserted into the specimen. The shear and compressional wave velocities as well as electrical resistivity dramatically change near 0 °C during freezing and thawing for all sand-silt mixtures. After one cycle of freezing-thawing, the elastic wave velocities decrease and the electrical resistivity increases due to the fabric change of the specimens. During the thawing process, the electrical resistivity displays hysteresis behaviors (not elastic wave velocities) from - 3 °C to 0 °C. This study demonstrates that elastic waves and electrical resistivity may effectively capture the property changes of the sand-silt mixtures during freezing-thawing.

Original languageEnglish
Pages (from-to)1-11
Number of pages11
JournalCold Regions Science and Technology
Volume113
DOIs
Publication statusPublished - 2015 May 1

Fingerprint

Thawing
Silt
Elastic waves
elastic wave
thawing
Freezing
freezing
electrical resistivity
silt
Sand
sand
wave velocity
Thermocouples
evaluation
effect
hysteresis
Temperature measurement
Hysteresis
electrode
Stainless steel

Keywords

  • Compressional waves
  • Electrical resistivity
  • Freezing
  • Frozen soil
  • Shear waves
  • Thawing

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Geotechnical Engineering and Engineering Geology

Cite this

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title = "Evaluation of the freezing-thawing effect in sand-silt mixtures using elastic waves and electrical resistivity",
abstract = "The purpose of this study is to investigate the effects of the freezing-thawing process on soils using elastic waves and electrical resistivity. Sand-silt mixtures with different silt fractions of 0{\%}, 10{\%}, 20{\%}, 30{\%}, 40{\%}, 60{\%}, 80{\%}, and 100{\%} weight at a fixed degree of saturation of 40{\%} are placed in a nylon freezing cell. The temperature of the sand-silt mixtures decreases from 20 °C to - 13.5 °C during freezing and increases from - 13.5 °C to 20 °C during thawing. Bender elements and piezo disk elements are used to continuously measure shear and compressional waves, respectively, during freezing and thawing. Four circular electrodes made of stainless steel are used to measure electrical resistivity. For the temperature measurement, a thermocouple is inserted into the specimen. The shear and compressional wave velocities as well as electrical resistivity dramatically change near 0 °C during freezing and thawing for all sand-silt mixtures. After one cycle of freezing-thawing, the elastic wave velocities decrease and the electrical resistivity increases due to the fabric change of the specimens. During the thawing process, the electrical resistivity displays hysteresis behaviors (not elastic wave velocities) from - 3 °C to 0 °C. This study demonstrates that elastic waves and electrical resistivity may effectively capture the property changes of the sand-silt mixtures during freezing-thawing.",
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AB - The purpose of this study is to investigate the effects of the freezing-thawing process on soils using elastic waves and electrical resistivity. Sand-silt mixtures with different silt fractions of 0%, 10%, 20%, 30%, 40%, 60%, 80%, and 100% weight at a fixed degree of saturation of 40% are placed in a nylon freezing cell. The temperature of the sand-silt mixtures decreases from 20 °C to - 13.5 °C during freezing and increases from - 13.5 °C to 20 °C during thawing. Bender elements and piezo disk elements are used to continuously measure shear and compressional waves, respectively, during freezing and thawing. Four circular electrodes made of stainless steel are used to measure electrical resistivity. For the temperature measurement, a thermocouple is inserted into the specimen. The shear and compressional wave velocities as well as electrical resistivity dramatically change near 0 °C during freezing and thawing for all sand-silt mixtures. After one cycle of freezing-thawing, the elastic wave velocities decrease and the electrical resistivity increases due to the fabric change of the specimens. During the thawing process, the electrical resistivity displays hysteresis behaviors (not elastic wave velocities) from - 3 °C to 0 °C. This study demonstrates that elastic waves and electrical resistivity may effectively capture the property changes of the sand-silt mixtures during freezing-thawing.

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