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<p>The poor detection of foundation soil heterogeneities can have severe effects, typically resulting in increased costs during the construction phase of civil engineering projects. To define the subsurface soil layers more effectively, this study used the Electrical Resistivity Tomography (ERT) technique at Mefou River Bridge (MRB) and Olembe Stadium (OS). The location of electrical anomalies informed the selection of the core drilling test. The heterogeneities characterized by low resistivities (less than 1000 Ω·m) correspond either to water-saturated clays in weathered bedrock or fissures/fractures in fresh bedrock. Electrical imaging is a useful instrument for accurately establishing the model of the investigated foundation soil, properly positioning geotechnical boreholes, and detecting potential risks that may affect the construction of civil engineering structures.</p>

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Geophysical Investigations of Heterogeneity Foundation Soils Using Electrical Resistivity Tomography Technique

  • 期刊论文

  • 发表日期：

    2025年1月1日

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  • M. S. Erick,
  • K. S. Parfait,
  • B. Dieudonné

摘要

The poor detection of foundation soil heterogeneities can have severe effects, typically resulting in increased costs during the construction phase of civil engineering projects. To define the subsurface soil layers more effectively, this study used the Electrical Resistivity Tomography (ERT) technique at Mefou River Bridge (MRB) and Olembe Stadium (OS). The location of electrical anomalies informed the selection of the core drilling test. The heterogeneities characterized by low resistivities (less than 1000 Ω·m) correspond either to water-saturated clays in weathered bedrock or fissures/fractures in fresh bedrock. Electrical imaging is a useful instrument for accurately establishing the model of the investigated foundation soil, properly positioning geotechnical boreholes, and detecting potential risks that may affect the construction of civil engineering structures.