Assessing Soil Bulk Density, Plasticity Index, Porosity, and Degree of Saturation through Electrical Resistivity using Correlation Analysis

Memon, M.B. and Yang, Z. and Qazi, W.H. and Pathan, S.M. and Chalgri, S.R. (2024) Assessing Soil Bulk Density, Plasticity Index, Porosity, and Degree of Saturation through Electrical Resistivity using Correlation Analysis. Malaysian Journal of Soil Science, 28. pp. 12-25.

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Abstract

The factor of safety for soil slopes is a crucial aspect of slope investigations, necessitating a thorough understanding of subsurface soil properties. Traditionally, borehole sampling has been employed for accurate assessment, despite its drawbacks of being costly and time-intensive. However, the emergence of electrical resistivity as a non-invasive technique presents a promising alternative. This method allows for efficient evaluation of subsurface soil properties, requiring minimal time and effort. The study aims to correlate soil properties such as bulk density, plasticity index, porosity, and degree of saturation with the electrical resistivity technique and present possible outcomes. The laboratory-scale Wenner probes method was used for the determination of electrical resistivity. The correlations obtained were analyzed using the correlation analysis method. The correlation between electrical resistivity and plasticity index showed an increased regression value of 0.33 for silty sand samples. For the relationship between resistivity and bulk density, the regression value was 0.32 for clay and silty sand soil samples combined. The correlation between electrical resistivity and porosity for all soil samples and silty sand soil showed R2 values of 0.20 and 0.36 respectively. However, no relationship was found for clay soil samples while a weak relationship was found for the correlation between degree of saturation and resistivity. The correlations identified suggest that the electrical resistivity method is viable for assessing soil properties, although further comprehensive studies are needed to investigate weak relationships. The outcomes of the study may help bridge the gap in identifying geotechnical and geophysical data. © 2024, Malaysian Society of Soil Science. All rights reserved.

Item Type: Article
Additional Information: cited By 0
Depositing User: Mr Ahmad Suhairi UTP
Date Deposited: 04 Jun 2024 14:19
Last Modified: 04 Jun 2024 14:19
URI: https://khub.utp.edu.my/scholars/id/eprint/19554

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