Modeling of the small strain shear modulus on a fiber reinforced sand

Autores
Clariá, Juan José; Vettorelo, Paula Vanesa
Año de publicación
2015
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Fil: Clariá, Juan José. Universidad Nacional de Córdoba; Argentina.
Fil: Vettorelo, Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Estudios Avanzados en Ingeniería y Tecnología; Argentina.
The mechanical behavior of fiber reinforced soils has been extensively studied in the last decades. Previous studies have shown that inclusion of fibers increases the shear strength of the reinforced soil. However in some cases the presence of fibers can reduce the stiffness of the composite material. In this paper, we study the change on the initial stiffness in an alluvial sand reinforced with polypropylene fibers. A model based on Hertz elastic contact theory is developed in order to explain the trends of the maximum shear modulus in the fiber reinforced sand as the fiber content is varied. The model assumes that the shear wave is transmitted through elastic distortions at the contacts, so the stiffness of the contacts governs the initial shear modulus, which in turn is affected due to fibers addition. Furthermore, the ratio between the amount of grain to fiber contacts and the total of contacts on the shear wave path influence the maximum shear modulus. An experimental testing program involving confined compression tests with shear wave velocity measurements of unreinforced and fiber-reinforced sand specimens was undertaken to validate the proposed model trends. The model predictions were found to agree well with the experimental results.
http://conferencesba2015.com.ar/website/sixt-international-symposium-on-deformation-characteristics-of-geomaterial/welcome/
Fil: Clariá, Juan José. Universidad Nacional de Córdoba; Argentina.
Fil: Vettorelo, Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Estudios Avanzados en Ingeniería y Tecnología; Argentina.
Ingeniería Civil
Materia
Sans with fibers
Shear wave velocity
Fibra
Geomateriales
Nivel de accesibilidad
acceso abierto
Condiciones de uso
Repositorio
Repositorio Digital Universitario (UNC)
Institución
Universidad Nacional de Córdoba
OAI Identificador
oai:rdu.unc.edu.ar:11086/552066
Acceder
id RDUUNC_5812a7db4ab7ad21e19d89acf0e3507d
oai_identifier_str oai:rdu.unc.edu.ar:11086/552066
network_acronym_str RDUUNC
repository_id_str 2572
network_name_str Repositorio Digital Universitario (UNC)
spelling Modeling of the small strain shear modulus on a fiber reinforced sandClariá, Juan JoséVettorelo, Paula VanesaSans with fibersShear wave velocityFibraGeomaterialesFil: Clariá, Juan José. Universidad Nacional de Córdoba; Argentina.Fil: Vettorelo, Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Estudios Avanzados en Ingeniería y Tecnología; Argentina.The mechanical behavior of fiber reinforced soils has been extensively studied in the last decades. Previous studies have shown that inclusion of fibers increases the shear strength of the reinforced soil. However in some cases the presence of fibers can reduce the stiffness of the composite material. In this paper, we study the change on the initial stiffness in an alluvial sand reinforced with polypropylene fibers. A model based on Hertz elastic contact theory is developed in order to explain the trends of the maximum shear modulus in the fiber reinforced sand as the fiber content is varied. The model assumes that the shear wave is transmitted through elastic distortions at the contacts, so the stiffness of the contacts governs the initial shear modulus, which in turn is affected due to fibers addition. Furthermore, the ratio between the amount of grain to fiber contacts and the total of contacts on the shear wave path influence the maximum shear modulus. An experimental testing program involving confined compression tests with shear wave velocity measurements of unreinforced and fiber-reinforced sand specimens was undertaken to validate the proposed model trends. The model predictions were found to agree well with the experimental results.http://conferencesba2015.com.ar/website/sixt-international-symposium-on-deformation-characteristics-of-geomaterial/welcome/Fil: Clariá, Juan José. Universidad Nacional de Córdoba; Argentina.Fil: Vettorelo, Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Estudios Avanzados en Ingeniería y Tecnología; Argentina.Ingeniería Civil2015info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdf978-1-61499-600-2http://hdl.handle.net/11086/552066enginfo:eu-repo/semantics/openAccessreponame:Repositorio Digital Universitario (UNC)instname:Universidad Nacional de Córdobainstacron:UNC2025-10-23T11:19:08Zoai:rdu.unc.edu.ar:11086/552066Institucionalhttps://rdu.unc.edu.ar/Universidad públicaNo correspondehttp://rdu.unc.edu.ar/oai/snrdoca.unc@gmail.comArgentinaNo correspondeNo correspondeNo correspondeopendoar:25722025-10-23 11:19:08.77Repositorio Digital Universitario (UNC) - Universidad Nacional de Córdobafalse
dc.title.none.fl_str_mv Modeling of the small strain shear modulus on a fiber reinforced sand
title Modeling of the small strain shear modulus on a fiber reinforced sand
spellingShingle Modeling of the small strain shear modulus on a fiber reinforced sand
Clariá, Juan José
Sans with fibers
Shear wave velocity
Fibra
Geomateriales
title_short Modeling of the small strain shear modulus on a fiber reinforced sand
title_full Modeling of the small strain shear modulus on a fiber reinforced sand
title_fullStr Modeling of the small strain shear modulus on a fiber reinforced sand
title_full_unstemmed Modeling of the small strain shear modulus on a fiber reinforced sand
title_sort Modeling of the small strain shear modulus on a fiber reinforced sand
dc.creator.none.fl_str_mv Clariá, Juan José
Vettorelo, Paula Vanesa
author Clariá, Juan José
author_facet Clariá, Juan José
Vettorelo, Paula Vanesa
author_role author
author2 Vettorelo, Paula Vanesa
author2_role author
dc.subject.none.fl_str_mv Sans with fibers
Shear wave velocity
Fibra
Geomateriales
topic Sans with fibers
Shear wave velocity
Fibra
Geomateriales
dc.description.none.fl_txt_mv Fil: Clariá, Juan José. Universidad Nacional de Córdoba; Argentina.
Fil: Vettorelo, Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Estudios Avanzados en Ingeniería y Tecnología; Argentina.
The mechanical behavior of fiber reinforced soils has been extensively studied in the last decades. Previous studies have shown that inclusion of fibers increases the shear strength of the reinforced soil. However in some cases the presence of fibers can reduce the stiffness of the composite material. In this paper, we study the change on the initial stiffness in an alluvial sand reinforced with polypropylene fibers. A model based on Hertz elastic contact theory is developed in order to explain the trends of the maximum shear modulus in the fiber reinforced sand as the fiber content is varied. The model assumes that the shear wave is transmitted through elastic distortions at the contacts, so the stiffness of the contacts governs the initial shear modulus, which in turn is affected due to fibers addition. Furthermore, the ratio between the amount of grain to fiber contacts and the total of contacts on the shear wave path influence the maximum shear modulus. An experimental testing program involving confined compression tests with shear wave velocity measurements of unreinforced and fiber-reinforced sand specimens was undertaken to validate the proposed model trends. The model predictions were found to agree well with the experimental results.
http://conferencesba2015.com.ar/website/sixt-international-symposium-on-deformation-characteristics-of-geomaterial/welcome/
Fil: Clariá, Juan José. Universidad Nacional de Córdoba; Argentina.
Fil: Vettorelo, Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Estudios Avanzados en Ingeniería y Tecnología; Argentina.
Ingeniería Civil
description Fil: Clariá, Juan José. Universidad Nacional de Córdoba; Argentina.
publishDate 2015
dc.date.none.fl_str_mv 2015
dc.type.none.fl_str_mv info:eu-repo/semantics/conferenceObject
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
format conferenceObject
status_str publishedVersion
dc.identifier.none.fl_str_mv 978-1-61499-600-2
http://hdl.handle.net/11086/552066
identifier_str_mv 978-1-61499-600-2
url http://hdl.handle.net/11086/552066
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositorio Digital Universitario (UNC)
instname:Universidad Nacional de Córdoba
instacron:UNC
reponame_str Repositorio Digital Universitario (UNC)
collection Repositorio Digital Universitario (UNC)
instname_str Universidad Nacional de Córdoba
instacron_str UNC
institution UNC
repository.name.fl_str_mv Repositorio Digital Universitario (UNC) - Universidad Nacional de Córdoba
repository.mail.fl_str_mv oca.unc@gmail.com
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