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RECORD NUMBER: 8 OF 69

OLS Field Name OLS Field Data
Main Title Determination of effective porosity of soil materials
Author Horton, Robert ; Thompson, M. L. ; McBride, J. F.
Other Authors
Author Title of a Work
Thompson, Michael L.
McBride, John F.
CORP Author Iowa State Univ., Ames.;Environmental Protection Agency, Cincinnati, OH. Hazardous Waste Engineering Research Lab.
Publisher Hazardous Waste Engineering Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1988
Report Number EPA 600/2-88-045
Stock Number PB88-242391
OCLC Number 19015046
Subjects Soil permeability
Additional Subjects Soil water ; Soil compacting ; Porosity ; Soil properties ; Leaching ; Soil tests ; Water pollution control ; Hazardous wastes ; Path of pollutants ; Environmental transport
Internet Access
Description Access URL
http://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=20012OIF.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EJAD  EPA 600/2-88-045 Region 3 Library/Philadelphia, PA 12/24/1992
NTIS  PB88-242391 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Abstract
The performance of a compacted soil liner is partly a function of the porosity, where the transport of materials through the liner occurs via the pore space. The project studies the pore spaces of compacted soil materials to estimate the effective porosity, which is the portion of the pore space where the most rapid transport of leachate occurs. Pore space of three soil materials, till, loess, and paleosol, was studied. These analyses provided cumulative porosity curves from which the pore size distribution of soil samples were estimated. Theory was developed to estimate the effective porosity of a compacted soil material based upon a model of its pore size distribution and pore continuity. Comparisons between measured and predicted chloride travel times through compacted soil samples were made in order to verify the estimated effective porosities. The estimated effective porosities are reasonable because predicted chloride first breakthrough times are similar to the measured first breakthrough times in the soils studied. For these three soils predicted first breakthrough times are 5 to 10 times earlier when effective porosity is used.