Liquefaction Potential of Dams and Foundations. Report 4. Determination of 'in situ' Density of Sands.

Abstract

The use of undisturbed samples to evaluate in situ density and Standard Penetration Test (SPT) to estimate in situ relative density is reviewed. A procedure for obtaining high quality undisturbed samples of sands and the influence of this sampling procedure on the in situ relative density are discussed. The use of radiographs to evaluate sample quality is examined. As a result of studies reviewed, it is concluded that the SPT is not sufficiently accurate to be recommended for final evaluation of the density or relative density of a site unless site-specific correlations are developed. High quality undisturbed samples of sands may be obtained using a fixed-piston sampler and drilling mud. This sampling procedure yields very good samples in deposits of medium dense sands; however, the procedure tends to densify loose sands and loosen dense sands. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1977
Accession Number
ADA044262

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  • William F. Marcuson III

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  • Air Platforms

DTIC Thesaurus Topics

  • Accuracy
  • Civil Engineering
  • Concrete
  • Drilling
  • Earthquake Engineering
  • Engineering
  • Engineers
  • Excavation
  • Geotechnical Engineering
  • Grain Size
  • Groundwater
  • Laboratory Procedures
  • Laboratory Tests
  • Materials
  • Measurement
  • Mississippi River
  • Statistical Analysis

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