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
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spelling	my-utm-ep.546272020-10-21T01:05:42Z Fitting soil-water characteristic curve by using unimodal and bimodal soil physical properties 2015-06 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 http://eprints.utm.my/id/eprint/54627/ http://eprints.utm.my/id/eprint/54627/1/HockCheongJunQuanMFKA2015.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:86097 masters Universiti Teknologi Malaysia, Faculty of Civil Engineering Faculty of Civil Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
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
qualification_level	Master's degree
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
granting_institution	Universiti Teknologi Malaysia, Faculty of Civil Engineering
granting_department	Faculty of Civil Engineering
publishDate	2015
url	http://eprints.utm.my/id/eprint/54627/1/HockCheongJunQuanMFKA2015.pdf
_version_	1747817691679293440

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

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