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

Mohd Akip Tan, S. N. and Edy Tonnizam, M. and Saad, R. and Md Dan, M. F. and M. M., Nordiana and Z. A., M. Hazreek and Madun, A. (2018) Correlation of resistivity value with geotechnical N-value of sedimentary area in Nusajaya, Johor, Malaysia. IOP Conference Series: Journal of Physics: Conference Series, 995 (012079). pp. 1-13. ISSN 17426596

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Abstract

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
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA703-711 Engineering geology. Rock mechanics. Soil mechanics.
Divisions: Faculty of Civil and Environmental Engineering > Department of Infrastructure and Geomatic Engineering
Depositing User: Mr. Mohammad Shaifulrip Ithnin
Date Deposited: 23 Jun 2019 07:00
Last Modified: 23 Jun 2019 07:00
URI: http://eprints.uthm.edu.my/id/eprint/11238
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