Inverse analyses of disk infiltrometer tests

The disk infiltrometer is a simple device used to measure hydraulic properties of unsaturated soils at low suctions. Saturated coefficient of permeability can be estimated from the coefficients of permeability measured at low suctions. However, there are several methods to calculate the hydraulic pr...

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Bibliographic Details
Main Authors: Leong, Eng Choon, Rahardjo, Harianto, Nyunt, T. T.
Other Authors: School of Civil and Environmental Engineering
Format: Conference or Workshop Item
Language:English
Published: 2013
Online Access:https://hdl.handle.net/10356/96867
http://hdl.handle.net/10220/13071
http://www.unsat.eng.ku.ac.th/Proceeding/index.html
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Institution: Nanyang Technological University
Language: English
Description
Summary:The disk infiltrometer is a simple device used to measure hydraulic properties of unsaturated soils at low suctions. Saturated coefficient of permeability can be estimated from the coefficients of permeability measured at low suctions. However, there are several methods to calculate the hydraulic properties from disk infiltrometer tests. In this paper, inverse analyses of disk infiltrometer tests on compacted residual soil samples were performed. The estimated unsaturated hydraulic parameters were compared with those obtained experimentally. The results show that it is possible to obtain the soil-water characteristic curve accurately from the inverse analyses of disk infiltrometer tests.