Electrical properties of clay in relation to moisture loss

Near Surface Geophysics - Tập 8 Số 2 - Trang 173-180 - 2010
Edward J. F. Russell1, R. D. Barker2
1University of Birmingham, School of Geography, Earth and Environmental Sciences, Birmingham B15 2TT,, Edgbaston, UK
2Townhead Farm Keisley Appleby‐in‐Westmorland Cumbria CA16 6NF UK

Tóm tắt

ABSTRACTSubsidence of buildings situated on clay soils can be a serious insurance problem in dry summers. In order to investigate subsidence and monitor its progress, non‐invasive techniques that provide information on soil properties have enormous potential. To help assess the application of new electrical tomographic monitoring techniques, the electrical properties of seven geographically extensive clays and their relationships with moisture content have been determined. It is found that resistivity increases slowly as moisture content decreases to between 10–15% of the total saturation, beyond which resistivity increases rapidly. As electrical resistivity of clay is also dependent on ambient temperature, this must be monitored and corrected for. The results suggest that electrical resistivity could be a useful indicator of moisture content in clay soils.

Từ khóa


Tài liệu tham khảo

ABI Association of British Insurers, 2009, Annual Statistics.

10.1190/1.1437878

Biddle P.G., 1998, Tree Root Damage to Buildings

BS 1377‐2, 1990, Methods of Test for Soils for Civil Engineering Purposes: Classification Tests

Conein J., 2002, Proceedings 8th Meeting of EEGS European Section, 177

10.1144/1470-9236/08-023

10.1680/geot.1983.33.2.93

Ellison R.D., 1986, British Geological Survey Memoir for Sheet 223

Grim R.E., 1968, Clay Mineralogy

10.1111/j.1365-2478.1967.tb01785.x

Hopson P.M., 1996, British Geological Survey Memoir for Sheet 221

10.3997/1873-0604.2009017

Keller G.V., 1966, Electrical Methods in Geophysical Prospecting

2003 Technical University of Berlin Berlin E. Lück Temporal and spatial variation of soil moisture and its influence on electrical conductivity. Proceedings of the Meeting on Water and Organic Matter in Anthropogenic Soils: Dynamics and Processes 40

10.3997/1873-0604.2008031

10.1680/geot.1984.34.2.263

10.1680/geot.1997.47.1.179

10.3997/1873-0604.2008039

Old R.A., 1987, British Geological Survey Memoir for Sheet 184.

10.3997/1873-0604.2007019

10.1680/geot.1983.33.2.151

10.1016/j.jhydrol.2003.08.015

10.1029/2003GL016951

10.1144/1470-9326/04-036

10.1046/j.1365-2478.2002.00339.x

Theng B.K.G., 1979, Formation and Properties of Clay‐polymer Complexes

10.2136/vzj2004.1160

10.1007/978-94-011-2368-6

WardS.H.1990.Geotechnical and Environmental Geophysics Volume1: Review and Tutorial. SEG.

Thông tin
Thông tin xuất bản

Near Surface Geophysics

Tập 8 Số 2

173-180

Thông tin tác giả