Hydraulic Flow Through Saturated Clays
- 1 February 1960
- journal article
- Published by Cambridge University Press (CUP) in Clays and clay minerals (National Conference on Clays and Clay Minerals)
- Vol. 9, 131-161
- https://doi.org/10.1346/ccmn.1960.0090108
Abstract
The factors. (1) possible violations of Darcy’s law. (2) electrokinetic coupling. (3) high viscosity. (4) tortuous flow paths, an. (5) unequal pore sizes have been suggested as possible explanations for the differences between hydraulic flow rates in liquid-saturated clays and sands. The effects of these factors on hydraulic flow rates through saturated clays were investigated.Hydraulic flow rates, electrical conductivities, and streaming potentials were measured on natural, sodium, and calcium samples of kaolinite, illite and Boston blue clay. Data were taken after increments of one-dimensional consolidation and rebound over the pressure range from one-sixteenth to 256 atm.The influences of electrokinetic coupling on the hydraulic flow rates were calculated from irreversible thermodynamic relationships together with the hydraulic and electrical data. The other factors were studied by examining the extent to which each factor explains the discrepancies between measured flow rates and those predicted from Darcy’s law and the Kozeny-Carman equation.The results show that. (1) the possible violations of Darcy’s law and electrokinetic coupling are insignificant. (2) high viscosity and/or tortuous flow paths fail completely to account for the discrepancies between measured and predicted flow rates in clays, an. (3) unequal pore sizes can explain all the discrepancies.Keywords
This publication has 9 references indexed in Scilit:
- HYDRAULIC FLOW THROUGH SATURATED CLAYSPublished by Elsevier ,1962
- VISCOSITY OF WATER IN CLAY SYSTEMSPublished by Elsevier ,1960
- INTRINSIC PERMEABILITY OF CLAY AS AFFECTED BY CLAY-WATER INTERACTIONSoil Science, 1959
- Permeability of Porous MediaNature, 1959
- Physico-Chemical Analysis of the Compressibility of Pure ClaysGéotechnique, 1956
- THE EFFECT OF ELECTROLYTE CONCENTRATION ON SOIL PERMEABILITYEuropean Journal of Soil Science, 1955
- The Permeability of Fine-Grained SoilsPublished by ASTM International ,1955
- Permeability of KaoliniteIndustrial & Engineering Chemistry, 1954
- The Computation of Permeability from Simple Soil TestsGéotechnique, 1952