Work plan for cone penetrometer comparison testing.

Details

• Alternative Title:
  Cone penetrometer comparison testing : work plan
• Creators:
  Schneider, James
• Corporate Creators:
  National Center for Freight and Infrastructure Research and Education (U.S.)
• Corporate Contributors:
  Wisconsin. Dept. of Transportation. Social Media Peer Exchange Planning Team
• Subject/TRT Terms:
  • Penetrometers
  • Cone penetrometers
  • Subgrade (Pavements)
  • Soil tests
  • Soil penetration test
  • Soils
  • Testing
  • Roads--Foundations--Testing
  • Soils--Testing
  • Penetrometers
• Publication/ Report Number:
  CFIRE 04-21 ; 0092-10-10
• Resource Type:
  Tech Report
• Geographical Coverage:
  Wisconsin
• Edition:
  Work plan.
• Corporate Publisher:
  National Center for Freight and Infrastructure Research and Education (U.S.)
• Abstract:
  The work plan and experimental design are developed around aiding engineers and geologists within the ; Wisconsin Department of Transportation to understand the mechanisms controlling cone penetration test ; results so that they can decide when the testing method is appropriate for use, know how to design an ; appropriate exploration program, and rapidly interpret the results of the tests for more efficient and ; reliable engineering. When initially gaining experience with the use and interpretation of the cone ; penetration test, one will notice sharp contrasts in measured parameters with depth. These sharp contrasts ; indicate changes in soil behavior due to insertion of a cone of a given diameter at a given rate. Figure 4 ; shows a vertical profile of measured CPT parameters at the Wakota Bridge site in Minneapolis, MN (data ; from Mn/DOT). The left most plot is the corrected cone tip resistance qt=qc+(1-an)u2, where an is the area ; ratio of the penetrometer, and the friction ratio, or ratio of sleeve friction to cone tip resistance (Fr = ; fs/qt·100), is plotted instead of fs as Fr is more indicative of changes in soil type. Dashed horizontal lines ; are included in the profile to indicate major changes in CPT measurements, and thus materials that behave ; differently due to insertion of a penetrometer. The differences in each layer will be discussed primarily in ; relation to drainage conditions, with ‘undrained’ behavior associated with clayey soils, and ‘drained’ ; behavior associated with sandy soils.
  More +
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/23530/dot_23530_DS1.pdf
• File Type:
  [PDF - 712.68 KB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha-512:b173278d295f1d10bdeba714d0fe83b19dabf0cb646dedd8f84284c2ca0627bc6e757517bc2a194129f49e2079fe412358981be1eebc945800e36ebdf004e850