Author(s)

Ebiegberi Oborie ¹, Bello Akpoku Macquen ¹

Affiliation(s)

¹ Department of Geology, Niger Delta University, Bayelsa State, Nigeria

Corresponding Author

Ebiegberi Oborie

ABSTRACT

This research evaluates how well the resistivity survey approach works to estimate certain geotechnical index parameters. Soil samples were collected from freshly drilled boreholes and subjected to relevant laboratory analysis, while vertical electrical soundings were conducted in the vicinity of the boreholes. The research area's resistivity values were plotted against the moisture content and plasticity index of each soil layer and sample to investigate the correlation between the engineering properties and the processed geoelectric parameters. The results indicate that the link between electrical resistivity values and soil moisture content is inverse and non-linear. Analysis of the data futher shows that lower resistivity values were recorded for sediments with more water content, whereas higher resistivity values were recorded for sediments with less moisture content. The analysis also reveals that cohesive soils had a higher plasticity index and typically have higher liquid limit values relative to cohesionless soils. As per the grain size distribution of the soils and USCS classification, the results are such that the CH and CL soil types, had an average resistivity of 88.7 Ωm, clayey sand (SC) sediments recorded a mean resistivity value of 157.2 Ωm, and silty sand (SC) and poorly sorted sand (SP), respectively, had average resistivity values of 307.3 Ωm and 638.8 Ωm. This implies that, with other factors kept constant, soil resistivity values generally increase with increase in soil grain sizes. 

KEYWORDS

Resistivity, Geotechnical, Geoelectrical, Sounding, Plasticity index, Liquid limit

CITE THIS PAPER

Ebiegberi Oborie, Bello Akpoku Macquen, Relationship between Geoelectrical and Geotechnical Index Properties of Soils. Geoscience and Remote Sensing (2024) Vol. 7: 35-41. DOI: http://dx.doi.org/10.23977/geors.2024.070104.

REFERENCES

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