Measurement of water content of unsaturated soil by TDR technique

LIANG Zhigang; CHEN Yunmin; CHEN Yun

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Volume 28 Issue 2

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Chinese Journal of Geotechnical Engineering > 2006 > 28(2): 191-195.

LIANG Zhigang, CHEN Yunmin, CHEN Yun. Measurement of water content of unsaturated soil by TDR technique[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(2): 191-195.

Citation:

LIANG Zhigang, CHEN Yunmin, CHEN Yun. Measurement of water content of unsaturated soil by TDR technique[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(2): 191-195.

Citation:

LIANG Zhigang, CHEN Yunmin, CHEN Yun. Measurement of water content of unsaturated soil by TDR technique[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(2): 191-195.

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Measurement of water content of unsaturated soil by TDR technique

1.Geotechnical Engineering Institute of Zhejiang University Hangzhou 310027 China 2.Hangzhou Architectural Design Institute Co. Hangzhou 310001 China 3.Geotechnical Engineering Branch of Architectural Design Research Institute Zhejiang University Hangzhou 310012 China

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Published Date: February 14, 2006

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Abstract

Abstract

For the applications of coaxial-cable electromagnetic wave reflection technique in measuring soil water content and pore ratio,the interaction model for EM wave and single media was deduced based upon polarization mechanism.Then the relationship between dielectric constant and volume water content or pore ratio of unsaturated soil was established.Different kinds of soil samples were tested.From the experimental results,it was found out that the relation curves of soil samples were almost consistent with each other and fittd the model well.
- TDR technique,
- water content,
- pore ratio,
- laboratory experiment