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The influence of soil moisture content and grain size characteristics on its field electrical resistivity

Zainal Abidin, Mohd Hazreek and Wijeyesekera, Devapriya Chitral and Saad, Rosli and Ahmad, Fauziah (2013) The influence of soil moisture content and grain size characteristics on its field electrical resistivity. Electronic Journal of Geotechnical Engineering, 18. pp. 699-705. ISSN 1089-3032

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Electrical resistivity method (ERM) is increasingly and favourably adopted in geotechnical engineering due to a variety of reasons. In the past, ERM was popularly used in engineering, environmental and archaeological purposes. Its reliability depended entirely on the expert interpretation skills of a geophysicist. However, by virtue of the indirectness in measurement, ERM data must needs be strongly verified during the interpretation stage in order to produce results that are sufficiently reliable for use by geotechnical engineer in design and construction stages. Hence, this study presents such a demonstration of the influence of soil moisture content and grain size characteristics to field resistivity data as much desired for ERM verification. 2D ERM was performed using a set of ABEM (SAS) 4000 based on pole-dipole array. Three soil samples from locations lying along a survey line were collected immediately for moisture content and particle size distribution test according to BS 1377 (1990). Laboratory geotechnical tests strongly indicated that the electrical resistivity data can varied with the moisture content and grain size character. Soil electrical resistivity values decreased with increasing moisture content and fines content. The correlations established between the above parameters in this study, help to strongly ratify the field ERM data and thus contribute to a meaningful ERM interpretation.

Item Type: Article
Uncontrolled Keywords: electrical resistivity; moisture content; grain size; field resistivity data; geotechnical data
Subjects: Q Science > QC Physics
Divisions: Faculty of Civil and Environmental Engineering > Department of Infrastructure and Geomatic Engineering
Depositing User: Normajihan Abd. Rahman
Date Deposited: 10 Jan 2017 04:53
Last Modified: 10 Jan 2017 04:53
URI: http://eprints.uthm.edu.my/id/eprint/8107
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