Consolidated-Undrained Triaxial Creep Tests of St. Charles Parish Lakefront Foundation Clays.
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1976
- Accession Number
- ADA028590
Entities
People
- Lawrence D. Johnson