THE INFLUENCE OF BOUNDARY PORE PRESSURES ON FIELD RATES OF CONSOLIDATION-A CASE STUDY

The taxiway and runway embankments for the 2,200 foot westward extention of Runway 10R-28L at the Portland International Airport in Portland, Oregon are founded on a 45 foot thick clayey silt deposit, adjacent to the Columbia River. The silt layer is underlain by a deposit of uniform fine sand. The taxiway and runway embankments were instrumented with 13 settlement plates and 3 piezometers, with the latter located at the quarter points in the clayey silt. Variations in the boundary pore pressures were documented and the influence of these variations on the measured rate of consolidation has been evaluated. The data suggest that the underlying sand layer responds quickly to variations in the Columbia River level and that this variation in boundary pore water can seriously retard the measured rate of consolidation.

  • Supplemental Notes:
    • The Symposium held on April 2-4 1975 at Moscow, Idaho, was jointly sponsored by Idaho Transportation Department University of Idaho, Moscow; Idaho State University Pocatello; and Boise State University.
  • Corporate Authors:

    Idaho Department of Highways

    P.O Box 7129
    Boise, ID  USA  83707
  • Authors:
    • Driscoll, David D
    • Squier, L R
  • Publication Date: 1975-4

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00127651
  • Record Type: Publication
  • Files: TRIS, STATEDOT
  • Created Date: Mar 10 1976 12:00AM