2D/3D Numerical Analyses of Corrosion Initiation in RC Structures Accounting Fluctuations of Chloride Ions by External Actions
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s12205-021-1242-z http://hdl.handle.net/11449/206028 |
Resumo: | The diffusion of chloride ions in reinforced concrete (RC) varies in space and time, depending on many uncertain factors as material properties, temperature, aging, humidity and external loadings. In this paper, the goals are to provide different scenarios to probabilistic assessing of the corrosion initiation time and chloride ions content inside concrete considering different fluctuations. For the former, stochastic analyses helps to estimate the service life in RC; for the latter, the focus is on the nature of loading variation due to location and structural constraints that usually are not considered. The approach consist in studying the trend of chloride ion particles regarding the action of the external loadings by incorporating a function with random values. The governing equations are modified to account for the non-constant diffusivity under transient conditions. Results show that the chloride content for random diffusivity assumes lower values than for constant diffusivity. Moreover, in 2D analysis the chloride content is lesser of 78% than in 3D analysis. |
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2D/3D Numerical Analyses of Corrosion Initiation in RC Structures Accounting Fluctuations of Chloride Ions by External ActionsChloride ions diffusionDiffusivity fluctuationMCSNumerical solutionsReliability analysisThe diffusion of chloride ions in reinforced concrete (RC) varies in space and time, depending on many uncertain factors as material properties, temperature, aging, humidity and external loadings. In this paper, the goals are to provide different scenarios to probabilistic assessing of the corrosion initiation time and chloride ions content inside concrete considering different fluctuations. For the former, stochastic analyses helps to estimate the service life in RC; for the latter, the focus is on the nature of loading variation due to location and structural constraints that usually are not considered. The approach consist in studying the trend of chloride ion particles regarding the action of the external loadings by incorporating a function with random values. The governing equations are modified to account for the non-constant diffusivity under transient conditions. Results show that the chloride content for random diffusivity assumes lower values than for constant diffusivity. Moreover, in 2D analysis the chloride content is lesser of 78% than in 3D analysis.Itecons - Institute for Research and Technological Development in Construction Energy Environment and SustainabilitySchool of Civil Engineering São Paulo State University (UNESP)School of Civil Engineering São Paulo State University (UNESP)Environment and SustainabilityUniversidade Estadual Paulista (Unesp)Zacchei, EnricoNogueira, Caio Gorla [UNESP]2021-06-25T10:25:22Z2021-06-25T10:25:22Z2021-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article2105-2120http://dx.doi.org/10.1007/s12205-021-1242-zKSCE Journal of Civil Engineering, v. 25, n. 6, p. 2105-2120, 2021.1976-38081226-7988http://hdl.handle.net/11449/20602810.1007/s12205-021-1242-z2-s2.0-85102297541Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengKSCE Journal of Civil Engineeringinfo:eu-repo/semantics/openAccess2021-10-22T20:42:35Zoai:repositorio.unesp.br:11449/206028Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:40:11.925460Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
2D/3D Numerical Analyses of Corrosion Initiation in RC Structures Accounting Fluctuations of Chloride Ions by External Actions |
title |
2D/3D Numerical Analyses of Corrosion Initiation in RC Structures Accounting Fluctuations of Chloride Ions by External Actions |
spellingShingle |
2D/3D Numerical Analyses of Corrosion Initiation in RC Structures Accounting Fluctuations of Chloride Ions by External Actions Zacchei, Enrico Chloride ions diffusion Diffusivity fluctuation MCS Numerical solutions Reliability analysis |
title_short |
2D/3D Numerical Analyses of Corrosion Initiation in RC Structures Accounting Fluctuations of Chloride Ions by External Actions |
title_full |
2D/3D Numerical Analyses of Corrosion Initiation in RC Structures Accounting Fluctuations of Chloride Ions by External Actions |
title_fullStr |
2D/3D Numerical Analyses of Corrosion Initiation in RC Structures Accounting Fluctuations of Chloride Ions by External Actions |
title_full_unstemmed |
2D/3D Numerical Analyses of Corrosion Initiation in RC Structures Accounting Fluctuations of Chloride Ions by External Actions |
title_sort |
2D/3D Numerical Analyses of Corrosion Initiation in RC Structures Accounting Fluctuations of Chloride Ions by External Actions |
author |
Zacchei, Enrico |
author_facet |
Zacchei, Enrico Nogueira, Caio Gorla [UNESP] |
author_role |
author |
author2 |
Nogueira, Caio Gorla [UNESP] |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Environment and Sustainability Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Zacchei, Enrico Nogueira, Caio Gorla [UNESP] |
dc.subject.por.fl_str_mv |
Chloride ions diffusion Diffusivity fluctuation MCS Numerical solutions Reliability analysis |
topic |
Chloride ions diffusion Diffusivity fluctuation MCS Numerical solutions Reliability analysis |
description |
The diffusion of chloride ions in reinforced concrete (RC) varies in space and time, depending on many uncertain factors as material properties, temperature, aging, humidity and external loadings. In this paper, the goals are to provide different scenarios to probabilistic assessing of the corrosion initiation time and chloride ions content inside concrete considering different fluctuations. For the former, stochastic analyses helps to estimate the service life in RC; for the latter, the focus is on the nature of loading variation due to location and structural constraints that usually are not considered. The approach consist in studying the trend of chloride ion particles regarding the action of the external loadings by incorporating a function with random values. The governing equations are modified to account for the non-constant diffusivity under transient conditions. Results show that the chloride content for random diffusivity assumes lower values than for constant diffusivity. Moreover, in 2D analysis the chloride content is lesser of 78% than in 3D analysis. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-06-25T10:25:22Z 2021-06-25T10:25:22Z 2021-06-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1007/s12205-021-1242-z KSCE Journal of Civil Engineering, v. 25, n. 6, p. 2105-2120, 2021. 1976-3808 1226-7988 http://hdl.handle.net/11449/206028 10.1007/s12205-021-1242-z 2-s2.0-85102297541 |
url |
http://dx.doi.org/10.1007/s12205-021-1242-z http://hdl.handle.net/11449/206028 |
identifier_str_mv |
KSCE Journal of Civil Engineering, v. 25, n. 6, p. 2105-2120, 2021. 1976-3808 1226-7988 10.1007/s12205-021-1242-z 2-s2.0-85102297541 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
KSCE Journal of Civil Engineering |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
2105-2120 |
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 |
|
_version_ |
1808129541149818880 |