SEDL / STP / STP963-EB / STP44869S

Measuring Effects of Permeant Composition on Pore-Fluid Movement in Soil

Olsen, HW
Research civil engineer, environmental engineer, and civil engineering technician, U.S. Geological SurveyConsolidated Gas Transmission Corp., DenverClarksburg, COWV

Rice, TL
Research civil engineer, environmental engineer, and civil engineering technician, U.S. Geological SurveyConsolidated Gas Transmission Corp., DenverClarksburg, COWV

Nichols, RW
Research civil engineer, environmental engineer, and civil engineering technician, U.S. Geological SurveyConsolidated Gas Transmission Corp., DenverClarksburg, COWV

Pages: 12    Published: Jan 1988

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Abstract

A laboratory experimental system is described for measuring the effects of permeant composition on pore-fluid movement in a soil specimen mounted in a conventional triaxial cell. These effects include the variation of permeability that arises when the pore-fluid composition changes within a soil, and also the tendency for a permeant composition gradient to cause pore-fluid movement. The system is based on the previously reported capabilities and advantages of the flow-pump method for permeability measurements. The system also utilizes a permeant-control subsystem that facilitates bringing deaired solutions of arbitrary chemical composition from storage reservoirs to the ends of a test specimen.