Accession Number:

ADA028590

Title:

Consolidated-Undrained Triaxial Creep Tests of St. Charles Parish Lakefront Foundation Clays.

Descriptive Note:

Final rept.,

Corporate Author:

ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS

Personal Author(s):

Report Date:

1976-08-01

Pagination or Media Count:

56.0

Abstract:

The design, construction, and maintenance of levees on the soft plastic clay soils of the Atchafalaya River floodway have posed a problem for many years because of large settlements on the order of 10 to 20 ft. Some settlement is attributed to consolidation by dissipation of excess pore water pressure, but a substantial amount results from creep, a continuous no volume change, time-dependent deformation under a sustained shearing stress. Preliminary long-term creep tests were performed on specimens of the St. Charles Parish Lakefront soils to evaluate testing equipment and to determine general trends in long-term creep behavior. The tests were performed in standard triaxial cells with some modifications. Results of the tests indicated that the temperature control system to reduce temperature-induced variations in pore water pressures was satisfactory. The frictionless seals adopted to minimize friction between the loading rod and the piston housing of the chamber were also satisfactory.

Subject Categories:

  • Soil Mechanics
  • Civil Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE