A geologic profile is presented of the river silt deposit which is almost crescent shaped in cross section. Bedrock is very high near the bulkhead lines. The observation was made that the most representative values of strength and preconsolidation pressure, as determined by shear and consolidation tests respectively, are the higher ones. The silts are actually inorganic clays of high plasticity. Recent deposits are black in color and are unconsolidated while the deeper deposits are gray and overconsolidated. The material is very sensitive, with a sensitivity ratio from 10 to 15. The ratio between the undrained shear strength and maximum past pressure was found to be 0.25. Shear strength data and Atterberg limits for different borings (illustrated in a figure) indicate that the river silts are very weak and very compressible. The gray river silts have natural moisture contents that range from 50 percent to 80 percent while that of black river silts range from 80 percent to 200 percent. With natural moisture contents near the liquid limit, these soils are quite sensitive to remolding.

  • Corporate Authors:

    American Society of Civil Engineers

    345 East 47th Street
    New York, NY  United States  10017-2398
  • Authors:
    • SAXENA, S K
    • Smirnoff, T P
  • Publication Date: 1973-10

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00262399
  • Record Type: Publication
  • Report/Paper Numbers: Proc Paper 10042 Tech Note
  • Files: TRIS
  • Created Date: Nov 12 1974 12:00AM