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A platform for research: civil engineering, architecture and urbanism
Quick Estimation of Hydraulic Conductivity in Unsaturated Sandy Loam Soil
Abstract Laboratory experiments were conductedfor determining hydraulic conductivity duringinfiltration in an unsaturated sandy loam soil, usingboth steady state and equilibrium methods. A constanthead Guelph permeameter and a volumetric pressureplate extractor were used. Based on two ponded heightsin the permeameter, the parameters of Gardner'sequation expressing the unsaturated hydraulicconductivity as a function of pressure head (i.e. thesaturated hydraulic conductivity $ K_{s} $ and theexponent α), were estimated simultaneously.Furthermore, it was found that the parameter α,could also be predicted from the soil-water retentioncurve based on equilibrium data obtained from theextractor. This indicated that, for the soil typestudied, one-ponded height in the permeameter methodcould be sufficient for the determination of theexponent α, provided that the soil-water retentioncurve is known.
Quick Estimation of Hydraulic Conductivity in Unsaturated Sandy Loam Soil
Abstract Laboratory experiments were conductedfor determining hydraulic conductivity duringinfiltration in an unsaturated sandy loam soil, usingboth steady state and equilibrium methods. A constanthead Guelph permeameter and a volumetric pressureplate extractor were used. Based on two ponded heightsin the permeameter, the parameters of Gardner'sequation expressing the unsaturated hydraulicconductivity as a function of pressure head (i.e. thesaturated hydraulic conductivity $ K_{s} $ and theexponent α), were estimated simultaneously.Furthermore, it was found that the parameter α,could also be predicted from the soil-water retentioncurve based on equilibrium data obtained from theextractor. This indicated that, for the soil typestudied, one-ponded height in the permeameter methodcould be sufficient for the determination of theexponent α, provided that the soil-water retentioncurve is known.
Quick Estimation of Hydraulic Conductivity in Unsaturated Sandy Loam Soil
Giakoumakis, S.G. (author) / Tsakiris, G.P. (author)
1999
Article (Journal)
English
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