The Influence of Basic Physical Properties of Soil on its Electrical Resistivity Value under Loose and Dense Condition

2014 International Conference on Science & Engineering in Mathematics, Chemistry and Physics

数学;化学;物理学

Abidin, M.H.Z.^1,4 ; Ahmad, F.^2,5 ; Wijeyesekera, D.C.^3,6 ; Saad, R.^4

Faculty of Civil and Environmental Engineering, Universiti Tun Hussein Onn Malaysia, 86400 Batu Pahat Johor, Malaysia^1

School of Civil Engineering, Universiti Sains Malaysia, 14300 Nibong Tebal Penang, Malaysia^2

Research Center for Soft Soil, Universiti Tun Hussein Onn Malaysia, 86400 Batu Pahat Johor, Malaysia^3

School of Physics, Universiti Sains Malaysia, 11800 USM Penang, Malaysia^4

Institute of Postgraduate Studies, Universiti Sains Malaysia, 11800 USM Penang, Malaysia^5

School of Architecture, Computing and Engineering, University of East London, Beckton E11 2RD London, United Kingdom^6

关键词: Data interpretation;    Electrical resistivity tests;    Geotechnical tests;    Grain fraction;    Soil embankment;    Subsurface characterizations;    Subsurface profile;    Void ratios;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/495/1/012014/pdf
DOI  :  10.1088/1742-6596/495/1/012014

来源: IOP

【 摘 要 】

Electrical resistivity technique has become a famous alternative tool in subsurface characterization. In the past, several interpretations of electrical resistivity results were unable to be delivered in a strong justification due to lack of appreciation of soil mechanics. Traditionally, interpreters will come out with different conclusion which commonly from qualitative point of view thus creating some uncertainty regarding the result reliability. Most engineers desire to apply any techniques in their project which are able to provide some clear justification with strong, reliable and meaningful results. In order to reduce the problem, this study presents the influence of basic physical properties of soil due to the electrical resistivity value under loose and dense condition. Two different conditions of soil embankment model were tested under electrical resistivity test and basic geotechnical test. It was found that the electrical resistivity value (ERV, ρ) was highly influenced by the variations of soil basic physical properties (BPP) with particular reference to moisture content (w), densities (ρbulk/dry), void ratio (e), porosity (η) and particle grain fraction (d) of soil. Strong relationship between ERV and BPP can be clearly presents such as ρ 1/w, ρ 1/ρbulk/dry, ρ e and ρ η. This study therefore contributes a means of ERV data interpretation using BPP in order to reduce ambiguity of ERV result and interpretation discussed among related persons such as geophysicist, engineers and geologist who applied these electrical resistivity techniques in subsurface profile assessment.