Crack modeling of asphalt mixtures using nonlinear viscoelastic cohesive zone (NVCZ) to assess the influence of different fillers in the material's fracture resistance

Detalhes bibliográficos
Autor(a) principal: Rodrigues, Julia Amaral
Data de Publicação: 2018
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Institucional da Universidade Federal do Espírito Santo (riUfes)
Texto Completo: http://repositorio.ufes.br/handle/10/10694
Resumo: Micromechanical numerical models have become an important tool in the study of asphaltic pavements given its numerous advantages in comparison to analytical, semi-empirical and/or completely experimental approaches. Thus, this study presents a framework to predict the behavior of bituminous composites considering viscoelasticity and fracture resistance based on nonlinear viscoelastic cohesive zone (NVCZ) model. The NVCZ model is able to predict the entire fracture process, from crack nucleation, initiation, and propagation in mixture microstructure. To examine the NVCZ model, two fine aggregate matrix (FAM) mixtures containing different fillers (hydrated lime and steel slag) were evaluated experimentally and compared to the numerical results. FAM material linear-viscoelastic properties and fracture parameters required as input for the numerical modelling were experimentally obtained. Linear-viscoelastic properties were obtained by performing frequency sweep tests and the required NVCZ parameters were obtained by an experimental-numerical calibration procedure using semi-circular bending (SCB) laboratory tests coupled with finite element numerical simulations. To validate the model, microstructural numerical simulations of the indirect tensile strength test (IDT) were conducted and compared to experimental results. Numerical modeling results agree well with laboratory testing results. The results of this research imply that the NVCZ model is promising to evaluate the cohesive fracture resistance of different material constituents in bituminous composites with significant savings in experimental costs and time.
id UFES_547b10a82c8c47bfc0cc81f84088701a
oai_identifier_str oai:repositorio.ufes.br:10/10694
network_acronym_str UFES
network_name_str Repositório Institucional da Universidade Federal do Espírito Santo (riUfes)
repository_id_str 2108
spelling Teixeira, Jamilla Emi Sudo LutifRodrigues, Julia AmaralSouza, Flavio VasconcelosKim, Yong-RakPires, Patricio José Moreira2018-12-20T13:38:15Z2018-12-202018-12-20T13:38:15Z2018-08-22Micromechanical numerical models have become an important tool in the study of asphaltic pavements given its numerous advantages in comparison to analytical, semi-empirical and/or completely experimental approaches. Thus, this study presents a framework to predict the behavior of bituminous composites considering viscoelasticity and fracture resistance based on nonlinear viscoelastic cohesive zone (NVCZ) model. The NVCZ model is able to predict the entire fracture process, from crack nucleation, initiation, and propagation in mixture microstructure. To examine the NVCZ model, two fine aggregate matrix (FAM) mixtures containing different fillers (hydrated lime and steel slag) were evaluated experimentally and compared to the numerical results. FAM material linear-viscoelastic properties and fracture parameters required as input for the numerical modelling were experimentally obtained. Linear-viscoelastic properties were obtained by performing frequency sweep tests and the required NVCZ parameters were obtained by an experimental-numerical calibration procedure using semi-circular bending (SCB) laboratory tests coupled with finite element numerical simulations. To validate the model, microstructural numerical simulations of the indirect tensile strength test (IDT) were conducted and compared to experimental results. Numerical modeling results agree well with laboratory testing results. The results of this research imply that the NVCZ model is promising to evaluate the cohesive fracture resistance of different material constituents in bituminous composites with significant savings in experimental costs and time.Modelos numéricos micromecânicos tornaram-se uma ferramenta importante para previsão do comportamento de compósitos, dadas as suas inúmeras vantagens em comparação com abordagens analíticas, semi-empíricas e/ou totalmente experimentais. Desta forma, este estudo apresenta um modelo numérico computacional para prever o comportamento de compósitos betuminosos considerando seu comportamento viscoelástico e resistência à fratura com base em modelo de zona coesiva viscoelástica não linear (ZCNV). O modelo ZCNV é capaz de prever todo o processo de fratura, desde a nucleação, iniciação e propagação da trinca na microestrutura da mistura asfáltica. Para validar o modelo, duas misturas de MAF (matriz asfáltica de finos) contendo diferentes fillers (cal hidratada e escória de aciaria) foram avaliadas experimentalmente e os resultados experimentais comparados com os resultados numéricos. As propriedades viscoelástricas lineares das MAFs e os parâmetros de fratura necessários para a modelagem numérica foram obtidos experimentalmente. As propriedades viscoelásticas lineares foram obtidas através da realização de testes de varredura de frequência e os parâmetros de fratura requeridos foram obtidos por um procedimento de calibração numérica experimental usando testes de laboratório de flexão semicircular (SCB) acoplados a simulações numéricas de elementos finitos. Para validar o modelo, foram realizados ensaios laboratoriais de tração indireta (TI) e os resultados foram comparados com resultados numéricos para o mesmo ensaio com as mesmas condições de contorno. Os resultados da modelagem numérica foram compatíveis com os resultados dos testes laboratoriais. Os resultados desta pesquisa implicam que o modelo ZCNV é eficiente para avaliar a influência da adição de diferentes materiais em matrizes asfálticas com relação a resistência à fratura sendo, portanto, uma importante ferramenta para auxiliar na análise da influência de materiais no comportamento de misturas asfálticas, trazendo economias significativas em custo e tempo.TextRODRIGUES, Julia Amaral. Crack modeling of asphalt mixtures using nonlinear viscoelastic cohesive zone (NVCZ) to assess the influence of different fillers in the material's fracture resistance. 2018. 96 f. Dissertação (Mestrado em Engenharia Civil) - Universidade Federal do Espírito Santo, Centro Tecnológico, Vitória, 2018http://repositorio.ufes.br/handle/10/10694engUniversidade Federal do Espírito SantoMestrado em Engenharia CivilPrograma de Pós-Graduação em Engenharia CivilUFESBRCentro TecnológicoBituminous materialsFractureViscoelasticityCohesive ZoneModelagem numéricaZona CoesivaMateriais betuminososFraturaViscoelasticidadeZona CoesivaPavimentos de asfaltoMecânica da fraturaViscoelasticidadeMateriais betuminososEngenharia Civil624Crack modeling of asphalt mixtures using nonlinear viscoelastic cohesive zone (NVCZ) to assess the influence of different fillers in the material's fracture resistanceinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da Universidade Federal do Espírito Santo (riUfes)instname:Universidade Federal do Espírito Santo (UFES)instacron:UFESORIGINALDissertação-Versão Final Mestrado Julia A. Rodrigues.pdfapplication/pdf9279239http://repositorio.ufes.br/bitstreams/4a3fe224-dd1e-4e9a-a29a-5c26a2aa2ad4/download69a42226cfcf3f5326a7470365c33732MD5110/106942024-07-17 17:00:36.155oai:repositorio.ufes.br:10/10694http://repositorio.ufes.brRepositório InstitucionalPUBhttp://repositorio.ufes.br/oai/requestopendoar:21082024-10-15T18:01:54.352489Repositório Institucional da Universidade Federal do Espírito Santo (riUfes) - Universidade Federal do Espírito Santo (UFES)false
dc.title.none.fl_str_mv Crack modeling of asphalt mixtures using nonlinear viscoelastic cohesive zone (NVCZ) to assess the influence of different fillers in the material's fracture resistance
title Crack modeling of asphalt mixtures using nonlinear viscoelastic cohesive zone (NVCZ) to assess the influence of different fillers in the material's fracture resistance
spellingShingle Crack modeling of asphalt mixtures using nonlinear viscoelastic cohesive zone (NVCZ) to assess the influence of different fillers in the material's fracture resistance
Rodrigues, Julia Amaral
Bituminous materials
Fracture
Viscoelasticity
Cohesive Zone
Modelagem numérica
Zona Coesiva
Materiais betuminosos
Fratura
Viscoelasticidade
Zona Coesiva
Engenharia Civil
Pavimentos de asfalto
Mecânica da fratura
Viscoelasticidade
Materiais betuminosos
624
title_short Crack modeling of asphalt mixtures using nonlinear viscoelastic cohesive zone (NVCZ) to assess the influence of different fillers in the material's fracture resistance
title_full Crack modeling of asphalt mixtures using nonlinear viscoelastic cohesive zone (NVCZ) to assess the influence of different fillers in the material's fracture resistance
title_fullStr Crack modeling of asphalt mixtures using nonlinear viscoelastic cohesive zone (NVCZ) to assess the influence of different fillers in the material's fracture resistance
title_full_unstemmed Crack modeling of asphalt mixtures using nonlinear viscoelastic cohesive zone (NVCZ) to assess the influence of different fillers in the material's fracture resistance
title_sort Crack modeling of asphalt mixtures using nonlinear viscoelastic cohesive zone (NVCZ) to assess the influence of different fillers in the material's fracture resistance
author Rodrigues, Julia Amaral
author_facet Rodrigues, Julia Amaral
author_role author
dc.contributor.advisor1.fl_str_mv Teixeira, Jamilla Emi Sudo Lutif
dc.contributor.author.fl_str_mv Rodrigues, Julia Amaral
dc.contributor.referee1.fl_str_mv Souza, Flavio Vasconcelos
dc.contributor.referee2.fl_str_mv Kim, Yong-Rak
dc.contributor.referee3.fl_str_mv Pires, Patricio José Moreira
contributor_str_mv Teixeira, Jamilla Emi Sudo Lutif
Souza, Flavio Vasconcelos
Kim, Yong-Rak
Pires, Patricio José Moreira
dc.subject.eng.fl_str_mv Bituminous materials
Fracture
Viscoelasticity
Cohesive Zone
topic Bituminous materials
Fracture
Viscoelasticity
Cohesive Zone
Modelagem numérica
Zona Coesiva
Materiais betuminosos
Fratura
Viscoelasticidade
Zona Coesiva
Engenharia Civil
Pavimentos de asfalto
Mecânica da fratura
Viscoelasticidade
Materiais betuminosos
624
dc.subject.por.fl_str_mv Modelagem numérica
Zona Coesiva
Materiais betuminosos
Fratura
Viscoelasticidade
Zona Coesiva
dc.subject.cnpq.fl_str_mv Engenharia Civil
dc.subject.br-rjbn.none.fl_str_mv Pavimentos de asfalto
Mecânica da fratura
Viscoelasticidade
Materiais betuminosos
dc.subject.udc.none.fl_str_mv 624
description Micromechanical numerical models have become an important tool in the study of asphaltic pavements given its numerous advantages in comparison to analytical, semi-empirical and/or completely experimental approaches. Thus, this study presents a framework to predict the behavior of bituminous composites considering viscoelasticity and fracture resistance based on nonlinear viscoelastic cohesive zone (NVCZ) model. The NVCZ model is able to predict the entire fracture process, from crack nucleation, initiation, and propagation in mixture microstructure. To examine the NVCZ model, two fine aggregate matrix (FAM) mixtures containing different fillers (hydrated lime and steel slag) were evaluated experimentally and compared to the numerical results. FAM material linear-viscoelastic properties and fracture parameters required as input for the numerical modelling were experimentally obtained. Linear-viscoelastic properties were obtained by performing frequency sweep tests and the required NVCZ parameters were obtained by an experimental-numerical calibration procedure using semi-circular bending (SCB) laboratory tests coupled with finite element numerical simulations. To validate the model, microstructural numerical simulations of the indirect tensile strength test (IDT) were conducted and compared to experimental results. Numerical modeling results agree well with laboratory testing results. The results of this research imply that the NVCZ model is promising to evaluate the cohesive fracture resistance of different material constituents in bituminous composites with significant savings in experimental costs and time.
publishDate 2018
dc.date.accessioned.fl_str_mv 2018-12-20T13:38:15Z
dc.date.available.fl_str_mv 2018-12-20
2018-12-20T13:38:15Z
dc.date.issued.fl_str_mv 2018-08-22
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.citation.fl_str_mv RODRIGUES, Julia Amaral. Crack modeling of asphalt mixtures using nonlinear viscoelastic cohesive zone (NVCZ) to assess the influence of different fillers in the material's fracture resistance. 2018. 96 f. Dissertação (Mestrado em Engenharia Civil) - Universidade Federal do Espírito Santo, Centro Tecnológico, Vitória, 2018
dc.identifier.uri.fl_str_mv http://repositorio.ufes.br/handle/10/10694
identifier_str_mv RODRIGUES, Julia Amaral. Crack modeling of asphalt mixtures using nonlinear viscoelastic cohesive zone (NVCZ) to assess the influence of different fillers in the material's fracture resistance. 2018. 96 f. Dissertação (Mestrado em Engenharia Civil) - Universidade Federal do Espírito Santo, Centro Tecnológico, Vitória, 2018
url http://repositorio.ufes.br/handle/10/10694
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv Text
dc.publisher.none.fl_str_mv Universidade Federal do Espírito Santo
Mestrado em Engenharia Civil
dc.publisher.program.fl_str_mv Programa de Pós-Graduação em Engenharia Civil
dc.publisher.initials.fl_str_mv UFES
dc.publisher.country.fl_str_mv BR
dc.publisher.department.fl_str_mv Centro Tecnológico
publisher.none.fl_str_mv Universidade Federal do Espírito Santo
Mestrado em Engenharia Civil
dc.source.none.fl_str_mv reponame:Repositório Institucional da Universidade Federal do Espírito Santo (riUfes)
instname:Universidade Federal do Espírito Santo (UFES)
instacron:UFES
instname_str Universidade Federal do Espírito Santo (UFES)
instacron_str UFES
institution UFES
reponame_str Repositório Institucional da Universidade Federal do Espírito Santo (riUfes)
collection Repositório Institucional da Universidade Federal do Espírito Santo (riUfes)
bitstream.url.fl_str_mv http://repositorio.ufes.br/bitstreams/4a3fe224-dd1e-4e9a-a29a-5c26a2aa2ad4/download
bitstream.checksum.fl_str_mv 69a42226cfcf3f5326a7470365c33732
bitstream.checksumAlgorithm.fl_str_mv MD5
repository.name.fl_str_mv Repositório Institucional da Universidade Federal do Espírito Santo (riUfes) - Universidade Federal do Espírito Santo (UFES)
repository.mail.fl_str_mv
_version_ 1813022574298267648

Registros relacionados