Correlation between field electrical resistivity and geotechnical SPT blow counts at tropical soils in Brazil
The joint application of geophysical investigations, non-invasive methods, and geotechnical investigations, invasive methods, in order to interpret the geological features in subsurface has been increasingly accepted, however, the correlation between the values collected by the geophysical methods a...
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| Format: | Article |
| Language: | English |
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Elsevier
2021-12-01
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| Series: | Environmental Challenges |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667010021001992 |
| _version_ | 1818969044917682176 |
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| author | Juliana Teles Diniz Gonçalves Marco Antonio Barsottelli Botelho Sandro Lemos Machado Leonides Guireli Netto |
| author_facet | Juliana Teles Diniz Gonçalves Marco Antonio Barsottelli Botelho Sandro Lemos Machado Leonides Guireli Netto |
| author_sort | Juliana Teles Diniz Gonçalves |
| collection | DOAJ |
| description | The joint application of geophysical investigations, non-invasive methods, and geotechnical investigations, invasive methods, in order to interpret the geological features in subsurface has been increasingly accepted, however, the correlation between the values collected by the geophysical methods and the direct investigative techniques have been developed in recent years. The obtained linear relationships are site specific and complementary studies are needed to establish their validation and limitations for each site. In this study, Electrical Resistivity Tomography (ERT) was used with Standard Penetration Test (SPT) for geotechnical investigation at three hillslope sites with different tropical soil properties in Bahia, Brazil. The results from thirteen boreholes were analyzed against data from 2D inverted sections. Linear fitting successfully correlates resistivity and NSPT for one borehole. Correlations of electrical resistivity and NSPT values were also performed using soils with similar compositions and physical characteristics, which showed good results. The coefficient of correlation (R) was 0.94. In addition, results the fitting slope coefficient seems to be dependent of soil genesis (lithology, texture and clay content variation) scription obtained in SPT surveys. |
| first_indexed | 2024-12-20T14:14:20Z |
| format | Article |
| id | doaj.art-63d21bdb3e86494aa59f45f00ea0ef83 |
| institution | Directory Open Access Journal |
| issn | 2667-0100 |
| language | English |
| last_indexed | 2024-12-20T14:14:20Z |
| publishDate | 2021-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Environmental Challenges |
| spelling | doaj.art-63d21bdb3e86494aa59f45f00ea0ef832022-12-21T19:38:05ZengElsevierEnvironmental Challenges2667-01002021-12-015100220Correlation between field electrical resistivity and geotechnical SPT blow counts at tropical soils in BrazilJuliana Teles Diniz Gonçalves0Marco Antonio Barsottelli Botelho1Sandro Lemos Machado2Leonides Guireli Netto3Department of Geotechnics, Federal University of Bahia (UFBA), Salvador, Bahia State, BrazilDepartment of Applied Geophysics, Federal University of Bahia (UFBA), Salvador, Bahia State, BrazilDepartment of Geotechnics, Federal University of Bahia (UFBA), Salvador, Bahia State, BrazilGeosciences and Exact Sciences Institute (IGCE), São Paulo State University (UNESP), Rio Claro, São Paulo State, Brazil; Institute for Technological Research of the State of São Paulo (IPT), São Paulo, São Paulo State, Brazil; Corresponding author at: Geosciences and Exact Sciences Institute (IGCE), São Paulo State University (UNESP), Rio Claro, São Paulo State, Brazil.The joint application of geophysical investigations, non-invasive methods, and geotechnical investigations, invasive methods, in order to interpret the geological features in subsurface has been increasingly accepted, however, the correlation between the values collected by the geophysical methods and the direct investigative techniques have been developed in recent years. The obtained linear relationships are site specific and complementary studies are needed to establish their validation and limitations for each site. In this study, Electrical Resistivity Tomography (ERT) was used with Standard Penetration Test (SPT) for geotechnical investigation at three hillslope sites with different tropical soil properties in Bahia, Brazil. The results from thirteen boreholes were analyzed against data from 2D inverted sections. Linear fitting successfully correlates resistivity and NSPT for one borehole. Correlations of electrical resistivity and NSPT values were also performed using soils with similar compositions and physical characteristics, which showed good results. The coefficient of correlation (R) was 0.94. In addition, results the fitting slope coefficient seems to be dependent of soil genesis (lithology, texture and clay content variation) scription obtained in SPT surveys.http://www.sciencedirect.com/science/article/pii/S2667010021001992Electrical resistivity tomography (ERT)SPTCorrelationSoil resistivityTropical soils |
| spellingShingle | Juliana Teles Diniz Gonçalves Marco Antonio Barsottelli Botelho Sandro Lemos Machado Leonides Guireli Netto Correlation between field electrical resistivity and geotechnical SPT blow counts at tropical soils in Brazil Environmental Challenges Electrical resistivity tomography (ERT) SPT Correlation Soil resistivity Tropical soils |
| title | Correlation between field electrical resistivity and geotechnical SPT blow counts at tropical soils in Brazil |
| title_full | Correlation between field electrical resistivity and geotechnical SPT blow counts at tropical soils in Brazil |
| title_fullStr | Correlation between field electrical resistivity and geotechnical SPT blow counts at tropical soils in Brazil |
| title_full_unstemmed | Correlation between field electrical resistivity and geotechnical SPT blow counts at tropical soils in Brazil |
| title_short | Correlation between field electrical resistivity and geotechnical SPT blow counts at tropical soils in Brazil |
| title_sort | correlation between field electrical resistivity and geotechnical spt blow counts at tropical soils in brazil |
| topic | Electrical resistivity tomography (ERT) SPT Correlation Soil resistivity Tropical soils |
| url | http://www.sciencedirect.com/science/article/pii/S2667010021001992 |
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