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Article: Engineering properties of quartz mica schist

TitleEngineering properties of quartz mica schist
Authors
KeywordsUniaxial creep test
Anisotropy
Quartz mica schist
Unloading test
Schistose planes
Issue Date2011
Citation
Engineering Geology, 2011, v. 121, n. 3-4, p. 135-149 How to Cite?
AbstractQuartz mica schist, which is a highly anisotropic metamorphic rock, usually presents a geotechnical challenge in construction projects. To ensure a safe and economical design, a comprehensive in situ and laboratory investigation scheme is necessary for projects to be built in quartz mica schist. In this study, such a comprehensive laboratory study of the engineering behavior of quartz mica schist has been carried out. The P-wave velocity tests, tensile and uniaxial compressive strength tests, and creep deformation tests conducted on specimens with differently oriented schistose planes all reveal the strong anisotropic characters of the rock. The relevant crack-initiation stress and crack-damage stress analysis in uniaxial compression test, which has not been previously applied to studying schistose rock, has been performed in the present study. When loading is parallel to schistose planes, crack initiation stress and crack damage stress are lower than those in other loading directions. As the compressive loading is applied parallel to schistose planes, local tensile stresses are preferentially induced normal to the relatively weak schistose planes. Cracks are thus easier to develop than in any other loading directions. Since schistose plane orientation is one of the key factors to control the formation of macro-cracks and hence failures of unloading test specimens, these engineering geological characters should be taken into consideration in engineering design. © 2011 Elsevier B.V.
Persistent Identifierhttp://hdl.handle.net/10722/213952
ISSN
2015 Impact Factor: 2.196
2015 SCImago Journal Rankings: 1.810

 

DC FieldValueLanguage
dc.contributor.authorZhang, Xiao Ping-
dc.contributor.authorWong, Louis Ngai Yuen-
dc.contributor.authorWang, Si Jing-
dc.contributor.authorHan, Geng You-
dc.date.accessioned2015-08-19T13:41:20Z-
dc.date.available2015-08-19T13:41:20Z-
dc.date.issued2011-
dc.identifier.citationEngineering Geology, 2011, v. 121, n. 3-4, p. 135-149-
dc.identifier.issn0013-7952-
dc.identifier.urihttp://hdl.handle.net/10722/213952-
dc.description.abstractQuartz mica schist, which is a highly anisotropic metamorphic rock, usually presents a geotechnical challenge in construction projects. To ensure a safe and economical design, a comprehensive in situ and laboratory investigation scheme is necessary for projects to be built in quartz mica schist. In this study, such a comprehensive laboratory study of the engineering behavior of quartz mica schist has been carried out. The P-wave velocity tests, tensile and uniaxial compressive strength tests, and creep deformation tests conducted on specimens with differently oriented schistose planes all reveal the strong anisotropic characters of the rock. The relevant crack-initiation stress and crack-damage stress analysis in uniaxial compression test, which has not been previously applied to studying schistose rock, has been performed in the present study. When loading is parallel to schistose planes, crack initiation stress and crack damage stress are lower than those in other loading directions. As the compressive loading is applied parallel to schistose planes, local tensile stresses are preferentially induced normal to the relatively weak schistose planes. Cracks are thus easier to develop than in any other loading directions. Since schistose plane orientation is one of the key factors to control the formation of macro-cracks and hence failures of unloading test specimens, these engineering geological characters should be taken into consideration in engineering design. © 2011 Elsevier B.V.-
dc.languageeng-
dc.relation.ispartofEngineering Geology-
dc.subjectUniaxial creep test-
dc.subjectAnisotropy-
dc.subjectQuartz mica schist-
dc.subjectUnloading test-
dc.subjectSchistose planes-
dc.titleEngineering properties of quartz mica schist-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.enggeo.2011.04.020-
dc.identifier.scopuseid_2-s2.0-79961032109-
dc.identifier.hkuros259298-
dc.identifier.volume121-
dc.identifier.issue3-4-
dc.identifier.spage135-
dc.identifier.epage149-

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