Properties of elastic waves in sand-silt mixtures due to freezing

Jung Hee Park, Jong-Sub Lee, Seung Seo Hong, YoungSeok Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

The freezing of soil converts a particulate medium into a continuous solid bonded by ice bridging. The objective of this study is to investigate the property changes in elastic waves, including shear and compressional waves, in a sand-silt mixture during soil freezing, using bender elements and piezo disk elements. Experiments are performed in a small freezing cell, which is designed to freeze soil specimens from top to bottom. Bender elements and piezo disk elements are used for the generation and detection of the shear and compressional waves. Two pairs of bender elements and two pairs of piezo disk elements are installed in the walls of the freezing cell at two different depths. A sand-silt mixture, with a silt fraction of 10% and a degree of saturation of 40%, is frozen in a freezer. As the temperature of a specimen drops from 20°C to -10°C, the velocities, resonant frequencies, and amplitudes of shear and compressional waves are continuously monitored. Experimental results show that the properties of the elastic waves change markedly as the specimen is freezing; the velocities of the shear and compressional waves dramatically increase. Poisson's ratio continuously decreases with the decrease in temperature, and becomes constant after soil freezing. In addition, huge increases are observed in the resonant frequencies of both elastic waves. This study demonstrates that the dramatic increases in both velocity and resonant frequency result from the ice bonding of the particulate mixture as a result of freezing of the pore moisture.

Original languageEnglish
Title of host publicationASTM Special Technical Publication
Pages140-152
Number of pages13
Volume1568 STP
DOIs
Publication statusPublished - 2013 Dec 1
EventASTM International Symposium on Mechanical Properties of Frozen Soil - Jacksonville, FL, United States
Duration: 2013 Jan 312013 Jan 31

Other

OtherASTM International Symposium on Mechanical Properties of Frozen Soil
CountryUnited States
CityJacksonville, FL
Period13/1/3113/1/31

Fingerprint

Silt
Elastic waves
Freezing
Sand
Soils
Natural frequencies
Ice
Poisson ratio
Moisture
Temperature

Keywords

  • Compressional wave
  • Elastic wave amplitude
  • Elastic wave velocity
  • Resonant frequency
  • Shear wave
  • Soil freezing

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Park, J. H., Lee, J-S., Hong, S. S., & Kim, Y. (2013). Properties of elastic waves in sand-silt mixtures due to freezing. In ASTM Special Technical Publication (Vol. 1568 STP, pp. 140-152) https://doi.org/10.1520/STP156820120209

Properties of elastic waves in sand-silt mixtures due to freezing. / Park, Jung Hee; Lee, Jong-Sub; Hong, Seung Seo; Kim, YoungSeok.

ASTM Special Technical Publication. Vol. 1568 STP 2013. p. 140-152.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Park, JH, Lee, J-S, Hong, SS & Kim, Y 2013, Properties of elastic waves in sand-silt mixtures due to freezing. in ASTM Special Technical Publication. vol. 1568 STP, pp. 140-152, ASTM International Symposium on Mechanical Properties of Frozen Soil, Jacksonville, FL, United States, 13/1/31. https://doi.org/10.1520/STP156820120209
Park JH, Lee J-S, Hong SS, Kim Y. Properties of elastic waves in sand-silt mixtures due to freezing. In ASTM Special Technical Publication. Vol. 1568 STP. 2013. p. 140-152 https://doi.org/10.1520/STP156820120209
Park, Jung Hee ; Lee, Jong-Sub ; Hong, Seung Seo ; Kim, YoungSeok. / Properties of elastic waves in sand-silt mixtures due to freezing. ASTM Special Technical Publication. Vol. 1568 STP 2013. pp. 140-152
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