Small-strain shear modulus and shear strength of an unsaturated clayey sand

Detalhes bibliográficos
Autor(a) principal: Georgetti, G. B.
Data de Publicação: 2013
Outros Autores: Vilar, O. M., Rodrigues, R. A. [UNESP]
Tipo de documento: Artigo de conferência
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://hdl.handle.net/11449/220959
Resumo: This paper presents and discuss results of laboratory tests with a compacted clayey sand. Two sets of tests were performed to analyze the shear strength and the small-strain shear modulus (Go) of this soil. The first set consisted of triaxial compression tests performed on saturated specimens and multistage triaxial compression tests with controlled suction on unsaturated specimens, which were sheared under constant water content. The second set consisted of tests to measure the Go of specimens under constant suction using the bender elements technique. The results allowed observing the development of suction during shearing and influence of suction and confining stress on the shear strength and on the small-strain shear modulus of the tested soil. A planar failure envelope could nicely fit experimental data of shear strength. The influence of net confining stress on the small-strain shear modulus reduced as the suction increases. The shear modulus tended to increase non-linearly with suction, seeming to reach an asymptotic value.
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spelling Small-strain shear modulus and shear strength of an unsaturated clayey sandBender elementsShear modulusShear strengthUnsaturated soilThis paper presents and discuss results of laboratory tests with a compacted clayey sand. Two sets of tests were performed to analyze the shear strength and the small-strain shear modulus (Go) of this soil. The first set consisted of triaxial compression tests performed on saturated specimens and multistage triaxial compression tests with controlled suction on unsaturated specimens, which were sheared under constant water content. The second set consisted of tests to measure the Go of specimens under constant suction using the bender elements technique. The results allowed observing the development of suction during shearing and influence of suction and confining stress on the shear strength and on the small-strain shear modulus of the tested soil. A planar failure envelope could nicely fit experimental data of shear strength. The influence of net confining stress on the small-strain shear modulus reduced as the suction increases. The shear modulus tended to increase non-linearly with suction, seeming to reach an asymptotic value.University of Sao PauloSao Paulo State UniversitySao Paulo State UniversityUniversidade de São Paulo (USP)Universidade Estadual Paulista (UNESP)Georgetti, G. B.Vilar, O. M.Rodrigues, R. A. [UNESP]2022-04-28T19:07:05Z2022-04-28T19:07:05Z2013-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject1113-111618th International Conference on Soil Mechanics and Geotechnical Engineering: Challenges and Innovations in Geotechnics, ICSMGE 2013, v. 2, p. 1113-1116.http://hdl.handle.net/11449/2209592-s2.0-85034443104Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPeng18th International Conference on Soil Mechanics and Geotechnical Engineering: Challenges and Innovations in Geotechnics, ICSMGE 2013info:eu-repo/semantics/openAccess2022-04-28T19:07:05Zoai:repositorio.unesp.br:11449/220959Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-28T19:07:05Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Small-strain shear modulus and shear strength of an unsaturated clayey sand
title Small-strain shear modulus and shear strength of an unsaturated clayey sand
spellingShingle Small-strain shear modulus and shear strength of an unsaturated clayey sand
Georgetti, G. B.
Bender elements
Shear modulus
Shear strength
Unsaturated soil
title_short Small-strain shear modulus and shear strength of an unsaturated clayey sand
title_full Small-strain shear modulus and shear strength of an unsaturated clayey sand
title_fullStr Small-strain shear modulus and shear strength of an unsaturated clayey sand
title_full_unstemmed Small-strain shear modulus and shear strength of an unsaturated clayey sand
title_sort Small-strain shear modulus and shear strength of an unsaturated clayey sand
author Georgetti, G. B.
author_facet Georgetti, G. B.
Vilar, O. M.
Rodrigues, R. A. [UNESP]
author_role author
author2 Vilar, O. M.
Rodrigues, R. A. [UNESP]
author2_role author
author
dc.contributor.none.fl_str_mv Universidade de São Paulo (USP)
Universidade Estadual Paulista (UNESP)
dc.contributor.author.fl_str_mv Georgetti, G. B.
Vilar, O. M.
Rodrigues, R. A. [UNESP]
dc.subject.por.fl_str_mv Bender elements
Shear modulus
Shear strength
Unsaturated soil
topic Bender elements
Shear modulus
Shear strength
Unsaturated soil
description This paper presents and discuss results of laboratory tests with a compacted clayey sand. Two sets of tests were performed to analyze the shear strength and the small-strain shear modulus (Go) of this soil. The first set consisted of triaxial compression tests performed on saturated specimens and multistage triaxial compression tests with controlled suction on unsaturated specimens, which were sheared under constant water content. The second set consisted of tests to measure the Go of specimens under constant suction using the bender elements technique. The results allowed observing the development of suction during shearing and influence of suction and confining stress on the shear strength and on the small-strain shear modulus of the tested soil. A planar failure envelope could nicely fit experimental data of shear strength. The influence of net confining stress on the small-strain shear modulus reduced as the suction increases. The shear modulus tended to increase non-linearly with suction, seeming to reach an asymptotic value.
publishDate 2013
dc.date.none.fl_str_mv 2013-01-01
2022-04-28T19:07:05Z
2022-04-28T19:07:05Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/conferenceObject
format conferenceObject
status_str publishedVersion
dc.identifier.uri.fl_str_mv 18th International Conference on Soil Mechanics and Geotechnical Engineering: Challenges and Innovations in Geotechnics, ICSMGE 2013, v. 2, p. 1113-1116.
http://hdl.handle.net/11449/220959
2-s2.0-85034443104
identifier_str_mv 18th International Conference on Soil Mechanics and Geotechnical Engineering: Challenges and Innovations in Geotechnics, ICSMGE 2013, v. 2, p. 1113-1116.
2-s2.0-85034443104
url http://hdl.handle.net/11449/220959
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 18th International Conference on Soil Mechanics and Geotechnical Engineering: Challenges and Innovations in Geotechnics, ICSMGE 2013
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 1113-1116
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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