COEFFICIENT OF PERMEABILITY FROM AC ELECTROOSMOSIS EXPERIMENTS. II: RESULTS
Alternating current (AC) electroosmosis tests allow rapid determination of the coefficient of permeability of saturated cohesive soils. A testing device was developed to minimize the adverse effects of prolonged application of direct current on observed responses. The devised apparatus and procedures to perform the AC experiments are presented and results of 19 experiments are analyzed. The tests involve a weak AC being sinusoidally applied under nominally undrained boundary conditions to saturated kaolinite specimens; excess pore pressure and phase angle are measured at frequencies between 0.25 and 4 Hz. Results of the experimental program and the procedures of backcalculating the coefficient of permeability are presented. Shown to agree within a factor of five are the coefficient of permeability from falling head permeability and AC electroosmosis tests on specimens of resedimented kaolinite. Theoretical conclusions drawn in a companion paper are supported by data from the experiments. The authors conclude that this type of test is feasible to rapidly assess the coefficient of permeability of saturated cohesive soils in the laboratory.
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Availability:
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Corporate Authors:
American Society of Civil Engineers
345 East 47th Street
New York, NY United States 10017-2398 -
Authors:
- Finno, R J
- Chung, K
- Yin, J
- Feldkamp, J R
- Publication Date: 1996-5
Language
- English
Media Info
- Features: Appendices; Figures; References; Tables;
- Pagination: p. 355-364
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Serial:
- Journal of Geotechnical Engineering
- Volume: 122
- Issue Number: 5
- Publisher: American Society of Civil Engineers
- ISSN: 0733-9410
Subject/Index Terms
- TRT Terms: Alternating current; Boundary value problems; Coefficients; Cohesive soils; Electroosmosis; Experiments; Permeability; Pore pressure; Saturated soils; Traffic signal phases
- Uncontrolled Terms: Boundary conditions; Phase angles
- Subject Areas: Geotechnology; Highways; I42: Soil Mechanics;
Filing Info
- Accession Number: 00720459
- Record Type: Publication
- Files: TRIS
- Created Date: Apr 29 1996 12:00AM