Behaviour of unsaturated layered soil columns during infiltration

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Behaviour of unsaturated layered soil columns during infiltration

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dc.contributor.author Yang, Hong
dc.contributor.author Rahardjo, Harianto
dc.contributor.author Leong, Eng Choon
dc.date.accessioned 2011-12-07T06:31:49Z
dc.date.available 2011-12-07T06:31:49Z
dc.date.copyright 2006
dc.date.issued 2011-12-07
dc.identifier.citation Yang, H., Rahardjo, H., & Leong, E. C. (2006). Behaviour of Unsaturated Layered Soil Columns during Infiltration. Journal of Hydrologic Engineering, 11(4), 329-337.
dc.identifier.uri http://hdl.handle.net/10220/7348
dc.description.abstract This paper presents the laboratory test results of vertical infiltration on two soil columns of finer over coarser soils subject to simulated rainfalls under conditions of no-ponding at the surface and constant head at the bottom. The main objectives were to evaluate the effect of rainfall intensity and duration; and to provide experimental evidence for soil water redistribution and hysteresis. The results show that rainfall intensity had a major effect on infiltration in the finer layer but had limited effect in the coarser layer due to the large difference of saturated permeability between the two layers. A relatively short rainfall duration resulted in a delayed response of pore pressure and water content to the rainfall after its cessation, while a relatively long duration did not result in such a delayed response. The delayed response indicated the redistribution of soil water in infiltration. Different paths of water content versus matric suction were followed during the tests indicating the apparent hysteretic behavior of soil water. In addition, the coarser layer restricted the increase of pore pressure in the finer layer. A minor variation of saturated soil permeability had minimal effect on infiltration.
dc.language.iso en
dc.relation.ispartofseries Journal of hydrologic engineering
dc.rights © 2006 ASCE
dc.subject DRNTU::Engineering::Civil engineering::Geotechnical.
dc.title Behaviour of unsaturated layered soil columns during infiltration
dc.type Journal Article
dc.contributor.school School of Civil and Environmental Engineering
dc.identifier.doi http://dx.doi.org/10.1061/(ASCE)1084-0699(2006)11:4(329)
dc.description.version Accepted version

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