STP977: Flow Pump Applications in Triaxial Testing

    Olsen, HW
    Research civil engineer, research geophysicist, and civil engineering technician, United States Department of the Interior, Geological SurveyDenver Federal Center, Denver, CO

    Morin, RH
    Research civil engineer, research geophysicist, and civil engineering technician, United States Department of the Interior, Geological SurveyDenver Federal Center, Denver, CO

    Nichols, RW
    Research civil engineer, research geophysicist, and civil engineering technician, United States Department of the Interior, Geological SurveyDenver Federal Center, Denver, CO

    Pages: 14    Published: Jan 1988


    Abstract

    New testing capabilities can be added to a conventional triaxial system by using a commercially available flow pump to control the rate and amount of pore fluid movement to or from the ends of a test specimen. These capabilities include measurements of equipment compliance, constant-rate-of-deformation consolidation, very-small-strain compressibility, permeability, coefficient of consolidation, and strain-path control with arbitrary combinations of vertical and volumetric strain rates. These capabilities are of interest not only in themselves; they facilitate a testing strategy that reduces the amount of equipment and the number of replicate specimens needed to define the permeability, compressibility, and strength of a soil.

    Keywords:

    flow pump, triaxial, compliance, consolidation, compressibility, permeability, coefficient of consolidation, strain-path control, K, 0, consolidation, shear strength, stage testing


    Paper ID: STP29069S

    Committee/Subcommittee: D18.05

    DOI: 10.1520/STP29069S


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