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Title: Drying and wetting characteristics of a two-layer soil column
Authors: Indrawan, I. Gde Budi
Rahardjo, Harianto
Leong, Eng Choon
Keywords: DRNTU::Engineering::Civil engineering::Geotechnical
Issue Date: 2007
Source: Indrawan, I. G. B. , Rahardjo, H., & Leong, E. C. (2007). Drying and Wetting Characteristics of a Two-Layer Soil Column. Canadian Geotechnical Journal, 44(1), 20-32.
Series/Report no.: Canadian geotechnical journal
Abstract: The drying and wetting characteristics of a two-layer soil column consisting of a 50 cm thick soil mixture over a 50 cm thick gravelly sand were investigated in this study. A series of infiltration tests were conducted in the laboratory through an infiltration column apparatus equipped with a tensiometer–transducer system, time-domain reflectometry, and water flow measurement system. Numerical analyses were performed using a finite element model to simulate water infiltration into the laboratory model under steady-state and transient conditions. The experimental data and numerical simulation results showed that static nonequilibrium profiles of pore-water pressure head were developed in the gravelly sand shortly after a drying process was started. The low unsaturated permeability of the gravelly sand resulted in a delay in downward water flow into the lower soil layer during a wetting process portion of the rainfall test.
DOI: 10.1139/t06-090
Rights: © 2007 Canadian Science Publishing
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:CEE Journal Articles

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