Frictional properties of non-welded and welded fractures in granite

The purpose of this study is to conduct direct shear tests on welded and non-welded fractures and find the effect of the cementation and roughness for rock stability. Prior to the direct shear test, all the rock samples are scanned by 3D scanner to get the surface roughness profile. Four specimens a...

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Main Author: Shen, Linyue
Other Authors: Wu Wei (CEE)
Format: Final Year Project
Language:English
Published: 2018
Subjects:
Online Access:http://hdl.handle.net/10356/75117
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-751172023-03-03T17:10:42Z Frictional properties of non-welded and welded fractures in granite Shen, Linyue Wu Wei (CEE) School of Civil and Environmental Engineering DRNTU::Engineering::Civil engineering::Geotechnical The purpose of this study is to conduct direct shear tests on welded and non-welded fractures and find the effect of the cementation and roughness for rock stability. Prior to the direct shear test, all the rock samples are scanned by 3D scanner to get the surface roughness profile. Four specimens are prepared to be conducted in the direct shear test, and each of them is tested under 4 different normal loads. Residual friction angle of 35.5o is obtained based on direct shear test on a smooth joint. Based on previous study, the friction angle of dry granite varies from 26o to 38o. For welded joints, the results show that the shear strength is increased by the cementation. Comparing the test results of smooth and rough joints, the roughness is positively correlated with the shear strength. Bachelor of Engineering (Civil) 2018-05-28T06:36:03Z 2018-05-28T06:36:03Z 2018 Final Year Project (FYP) http://hdl.handle.net/10356/75117 en Nanyang Technological University 30 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Civil engineering::Geotechnical
spellingShingle DRNTU::Engineering::Civil engineering::Geotechnical
Shen, Linyue
Frictional properties of non-welded and welded fractures in granite
description The purpose of this study is to conduct direct shear tests on welded and non-welded fractures and find the effect of the cementation and roughness for rock stability. Prior to the direct shear test, all the rock samples are scanned by 3D scanner to get the surface roughness profile. Four specimens are prepared to be conducted in the direct shear test, and each of them is tested under 4 different normal loads. Residual friction angle of 35.5o is obtained based on direct shear test on a smooth joint. Based on previous study, the friction angle of dry granite varies from 26o to 38o. For welded joints, the results show that the shear strength is increased by the cementation. Comparing the test results of smooth and rough joints, the roughness is positively correlated with the shear strength.
author2 Wu Wei (CEE)
author_facet Wu Wei (CEE)
Shen, Linyue
format Final Year Project
author Shen, Linyue
author_sort Shen, Linyue
title Frictional properties of non-welded and welded fractures in granite
title_short Frictional properties of non-welded and welded fractures in granite
title_full Frictional properties of non-welded and welded fractures in granite
title_fullStr Frictional properties of non-welded and welded fractures in granite
title_full_unstemmed Frictional properties of non-welded and welded fractures in granite
title_sort frictional properties of non-welded and welded fractures in granite
publishDate 2018
url http://hdl.handle.net/10356/75117
_version_ 1759854341437521920