Correlation of resistivity value with geotechnical N-Value of sedimentary area in Nusajaya, Johor, Malaysia

Mohd Akip Tan, S. N. and Tonnizam, M. Edy and Saad, R. and Md Dan, M. F. and Nordiana, M. M. and Hazreek, Z. A. M. and Madun, A. (2018) Correlation of resistivity value with geotechnical N-Value of sedimentary area in Nusajaya, Johor, Malaysia. Journal of Physics: Conference Series, 995 (1). pp. 1-13. ISSN 1742-6588

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Electrical resistivity survey and the geotechnical SPT blow counts (N-value) were carried out simultaneously on the tropically weathered sedimentary rock mass for an excavation project at Nusajaya, Johor, Malaysia. This study aims to determine subsurface profile by using 2D-resistivity methods and correlate with N-value derived from boring works. Four boreholes were investigated in five survey lines that revealed the site is underlain by moderately to completely weathered sandstone, clay, silt and shale. Data analysis from 2Dresistivity image shows that zones with high resistivity value generally have high N-value, and vice versa. Five zones have inversed the proportional relation between N-value and resistivity Ωm value due to different types of soil lithology. It indicates that 2D-resistivity is significance to detect bodies of anomalous materials or estimating the depth of bedrock. As a conclusion, the integration of geophysical and geotechnical analysis provides a promise approach to understand some relationship concerning the subsurface subsurface ground through the combination of 2D-resistivity and N-value.

Item Type: Article
Uncontrolled Keywords: NIL
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA703-712 Engineering geology. Rock mechanics. Soil mechanics.
Divisions: Faculty of Civil Engineering and Built Environment > Department of Civil Engineering : Infrastructure and Geomatic Engineering
Depositing User: UiTM Student Praktikal
Date Deposited: 17 Jan 2022 01:36
Last Modified: 17 Jan 2022 01:36

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