Improving soil properties to prevent surficial slope failure

Many hill slope areas in Malaysia are vulnerable to soil erosion and shallow slope failures due to intense and frequent rainfall events. Rainfall induced slope failure can be attributed to: seepage force and seepage erosion, the loss of shear strength of the soil, and formation of tension cracks. Li...

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Main Author:	Daneshmand, Saman
Format:	Thesis
Language:	English
Published:	2009
Subjects:	TA Engineering (General) Civil engineering (General)
Online Access:	http://eprints.utm.my/id/eprint/11130/1/SamanDaneshmandMFKA2009.pdf
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id	my-utm-ep.11130
record_format	uketd_dc
spelling	my-utm-ep.111302018-06-04T09:51:24Z Improving soil properties to prevent surficial slope failure 2009-06 Daneshmand, Saman TA Engineering (General). Civil engineering (General) Many hill slope areas in Malaysia are vulnerable to soil erosion and shallow slope failures due to intense and frequent rainfall events. Rainfall induced slope failure can be attributed to: seepage force and seepage erosion, the loss of shear strength of the soil, and formation of tension cracks. Lime was used to improve soil properties and resistance against failure. When mixed with in-situ soil, the lime can reduce the potential for swelling and shrinkage; therefore inhibit the formation of cracks at the surface. Lime can also reduce the soil’s dispersibility, therefore reduce the erosion potential. Soil mixed with lime has lower permeability, therefore enhance of capillary barrier effect and limit the rainfall infiltration into the soil. This study focuses on the improvement of soil properties to prevent surficial slope failure. Laboratory tests have been performed on soil and soil mix with deferent percentage of lime to evaluate properties of blended soil. The results show that the optimum lime content to be used in the mix design is 7%. A two dimensional finite element model of the slope was used to evaluate the performance of the optimum lime – soil mix as capillary barrier. The analysis revealed that the optimum thickness of slope cover system as capillary barrier is 30cm. 2009-06 Thesis http://eprints.utm.my/id/eprint/11130/ http://eprints.utm.my/id/eprint/11130/1/SamanDaneshmandMFKA2009.pdf application/pdf en public 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) Daneshmand, Saman Improving soil properties to prevent surficial slope failure
description	Many hill slope areas in Malaysia are vulnerable to soil erosion and shallow slope failures due to intense and frequent rainfall events. Rainfall induced slope failure can be attributed to: seepage force and seepage erosion, the loss of shear strength of the soil, and formation of tension cracks. Lime was used to improve soil properties and resistance against failure. When mixed with in-situ soil, the lime can reduce the potential for swelling and shrinkage; therefore inhibit the formation of cracks at the surface. Lime can also reduce the soil’s dispersibility, therefore reduce the erosion potential. Soil mixed with lime has lower permeability, therefore enhance of capillary barrier effect and limit the rainfall infiltration into the soil. This study focuses on the improvement of soil properties to prevent surficial slope failure. Laboratory tests have been performed on soil and soil mix with deferent percentage of lime to evaluate properties of blended soil. The results show that the optimum lime content to be used in the mix design is 7%. A two dimensional finite element model of the slope was used to evaluate the performance of the optimum lime – soil mix as capillary barrier. The analysis revealed that the optimum thickness of slope cover system as capillary barrier is 30cm.
format	Thesis
qualification_level	Master's degree
author	Daneshmand, Saman
author_facet	Daneshmand, Saman
author_sort	Daneshmand, Saman
title	Improving soil properties to prevent surficial slope failure
title_short	Improving soil properties to prevent surficial slope failure
title_full	Improving soil properties to prevent surficial slope failure
title_fullStr	Improving soil properties to prevent surficial slope failure
title_full_unstemmed	Improving soil properties to prevent surficial slope failure
title_sort	improving soil properties to prevent surficial slope failure
granting_institution	Universiti Teknologi Malaysia, Faculty of Civil Engineering
granting_department	Faculty of Civil Engineering
publishDate	2009
url	http://eprints.utm.my/id/eprint/11130/1/SamanDaneshmandMFKA2009.pdf
_version_	1747814816562544640

Improving soil properties to prevent surficial slope failure

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