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Estimation of soil-water characteristic curve and relative permeability for granular soils with different initial dry densities
Wan-Huan Zhou; Ka-Veng Yuen; Fang Tan
2014-06-27
Source PublicationEngineering Geology
ISSN1872-6917
Volume179Pages:1-9
Abstract

This paper presents a new estimation model to consider the effect of initial dry density on the soil-water characteristic curve (SWCC) of granular soils. The proposed method is based on the Fredlund and Xing equation without increasing the number of adjustable parameters. The experimental data from a soil database is partitioned into two groups for fitting and verification of the proposed method. From the verification results, it can be seen that the proposed method provides significantly better estimation of SWCC for the granular soils with different initial dry densities than the Fredlund and Xing equation. From the comparison and statistical analysis, it is found that the estimations by the present method exhibit higher correlations with experimental data than the Tarantino's model for the granular soil samples. The uncertainty of measurement data is analyzed by using the Bayesian method and applied in the estimation of the relative permeability function (kr). Different levels of confidence intervals of SWCC are obtained by the Bayesian approach. It is found that the proposed method can better predict the kr values with smaller uncertainty for the soil with different initial dry densities than the Fredlund and Xing equation. The new method is readily adopted for engineers to quickly estimate the SWCC and relative permeability of granular soil under different initial dry densities.

KeywordBayesian Method Initial Dry Density Swcc Relative Permeability Function Uncertainty Unsaturated Soil
DOI10.1016/j.enggeo.2014.06.013
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEngineering ; Geology
WOS SubjectEngineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000340983600001
PublisherELSEVIER, RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS
The Source to ArticleScopus
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Cited Times [WOS]:51   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionFaculty of Science and Technology
Corresponding AuthorKa-Veng Yuen
AffiliationDepartment of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macau, China
First Author AffilicationFaculty of Science and Technology
Corresponding Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Wan-Huan Zhou,Ka-Veng Yuen,Fang Tan. Estimation of soil-water characteristic curve and relative permeability for granular soils with different initial dry densities[J]. Engineering Geology,2014,179:1-9.
APA Wan-Huan Zhou,Ka-Veng Yuen,&Fang Tan.(2014).Estimation of soil-water characteristic curve and relative permeability for granular soils with different initial dry densities.Engineering Geology,179,1-9.
MLA Wan-Huan Zhou,et al."Estimation of soil-water characteristic curve and relative permeability for granular soils with different initial dry densities".Engineering Geology 179(2014):1-9.
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