Feasibility Study on Geophysical Methods to Estimate Geotechnical Properties in Louisiana

Details

• Creators:
  Ferguson, Nicholas ; Gautreau, Gavin
• Corporate Creators:
  Louisiana State University. Department of Civil and Environmental Engineering ; Louisiana Transportation Research Center
• Corporate Contributors:
  Louisiana. Department of Transportation and Development ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  • Cost effectiveness
  • Feasibility analysis
  • Geophysics
  • Geotechnical engineering
  • Electrical resistivity
  • Polarization
  • Site investigation
  • Refractometer
  • Reflectometer
  • Induced polarization (IP)
• Publication/ Report Number:
  FHWA/LA.22/667
• Resource Type:
  Tech Report
• Geographical Coverage:
  Louisiana ; United States
• Edition:
  12/2020 – 08/2022
• Corporate Publisher:
  Louisiana. Department of Transportation and Development
• Abstract:
  Subsurface investigations currently rely on conventional soil borings with the aid of cone penetrometer test (CPT)soundings. However, these geotechnical explorations can be expensive and information is not provided between bore holes. Geophysical methods can aid in providing some information between the boreholes at a lower cost for the Louisiana Department of Transportation and Development (DOTD). These cost-effective geophysical surveys include other advantages, such as site accessibility, portability, operator safety, shorter project delivery times, and reduced construction delays. This study evaluated a series of available geophysical methods. A survey determined the preferred applications that Louisiana is interested in incorporating. Researchers further refined this list to include test methods most suitable for implementation within the Department. Analysis included applicability, advantages/disadvantages, and current test methods utilized in-house at other state DOTs. Researchers recommend more detailed field research directed toward implementing the following geophysical methods: electrical resistivity, seismic refraction, and cross-hole tomography.
• Format:
  PDF
• Funding:
  20-4GT ; 1000389
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/64635/dot_64635_DS1.pdf
• File Type:
  [PDF - 4.21 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:c6794777c251cea17e7f0bdfe3d7a08f30dda102abc2d4f0e54d0a91a5dd284b