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Fitting soil-water characteristic curve by using unimodal and bimodal soil physical properties

The soil-water characteristic curve (SWCC) is the relationship between the volumetric water content, ɵ and the matric suction, S (= Ua - UW). The SWCC is requested by many researchers in order to determine the behaviour of soil for further analysis in engineering purposes, for example, shear strengt...

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Main Author: Hock, Cheong Jun Quan
Format: Thesis
Language:English
Published: 2015
Subjects:
TA Engineering (General). Civil engineering (General)
Online Access:http://eprints.utm.my/id/eprint/54627/1/HockCheongJunQuanMFKA2015.pdf
http://eprints.utm.my/id/eprint/54627/
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spelling my.utm.546272020-10-21T01:05:42Z http://eprints.utm.my/id/eprint/54627/ Fitting soil-water characteristic curve by using unimodal and bimodal soil physical properties Hock, Cheong Jun Quan TA Engineering (General). Civil engineering (General) The soil-water characteristic curve (SWCC) is the relationship between the volumetric water content, ɵ and the matric suction, S (= Ua - UW). The SWCC is requested by many researchers in order to determine the behaviour of soil for further analysis in engineering purposes, for example, shear strength. In the past decade, few fitting methods have been developed to describe the SWCC for a particular soil, for example, Fredlund and Xing (1994). These fitting functions fit the experimental SWCC raw data from laboratory test, to form a curve for further prediction and analyse which costly and time consuming. Thus, Zapata (1994) introduced correlation formulae to D60 from soil physical property and SWCC fitting parameters in order to achieve time and cost saving instead of doing grain size distribution analysis, sieve analysis and hydrometer test. Two set of data were selected, clayed sand and silt. By plotting the grain size distribution (GSD) curves from laboratory and fitted GSD curves were calculated and plotted. From the fitted GSD, found the bmodal fitting equation has better fitting results (R2 = 0.97 (clayed sand) and R2 = 0.98 (silt)) and the soil physical properties, D60, was determined for further analysis in Zapata (1999) equations as fitting parameters (af, nf, and mf) in Fredlund and Xing (1994) model. The results were compared to the Fredlund and Xing (1994) model without employing Zapata (1999) equations and found that the behaviour of SWCC with Zapata (1999) equations can produce similar smooth curves. 2015-06 Thesis NonPeerReviewed application/pdf en http://eprints.utm.my/id/eprint/54627/1/HockCheongJunQuanMFKA2015.pdf Hock, Cheong Jun Quan (2015) Fitting soil-water characteristic curve by using unimodal and bimodal soil physical properties. Masters thesis, Universiti Teknologi Malaysia, Faculty of Civil Engineering. http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:86097
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic TA Engineering (General). Civil engineering (General)
spellingShingle TA Engineering (General). Civil engineering (General)
Hock, Cheong Jun Quan
Fitting soil-water characteristic curve by using unimodal and bimodal soil physical properties
description The soil-water characteristic curve (SWCC) is the relationship between the volumetric water content, ɵ and the matric suction, S (= Ua - UW). The SWCC is requested by many researchers in order to determine the behaviour of soil for further analysis in engineering purposes, for example, shear strength. In the past decade, few fitting methods have been developed to describe the SWCC for a particular soil, for example, Fredlund and Xing (1994). These fitting functions fit the experimental SWCC raw data from laboratory test, to form a curve for further prediction and analyse which costly and time consuming. Thus, Zapata (1994) introduced correlation formulae to D60 from soil physical property and SWCC fitting parameters in order to achieve time and cost saving instead of doing grain size distribution analysis, sieve analysis and hydrometer test. Two set of data were selected, clayed sand and silt. By plotting the grain size distribution (GSD) curves from laboratory and fitted GSD curves were calculated and plotted. From the fitted GSD, found the bmodal fitting equation has better fitting results (R2 = 0.97 (clayed sand) and R2 = 0.98 (silt)) and the soil physical properties, D60, was determined for further analysis in Zapata (1999) equations as fitting parameters (af, nf, and mf) in Fredlund and Xing (1994) model. The results were compared to the Fredlund and Xing (1994) model without employing Zapata (1999) equations and found that the behaviour of SWCC with Zapata (1999) equations can produce similar smooth curves.
format Thesis
author Hock, Cheong Jun Quan
author_facet Hock, Cheong Jun Quan
author_sort Hock, Cheong Jun Quan
title Fitting soil-water characteristic curve by using unimodal and bimodal soil physical properties
title_short Fitting soil-water characteristic curve by using unimodal and bimodal soil physical properties
title_full Fitting soil-water characteristic curve by using unimodal and bimodal soil physical properties
title_fullStr Fitting soil-water characteristic curve by using unimodal and bimodal soil physical properties
title_full_unstemmed Fitting soil-water characteristic curve by using unimodal and bimodal soil physical properties
title_sort fitting soil-water characteristic curve by using unimodal and bimodal soil physical properties
publishDate 2015
url http://eprints.utm.my/id/eprint/54627/1/HockCheongJunQuanMFKA2015.pdf
http://eprints.utm.my/id/eprint/54627/
http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:86097
_version_ 1681489468916236288
score 13.211869

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