Carbonation-Related Microstructural Changesin Long-Term Durability Concrete

Detalhes bibliográficos
Autor(a) principal: Silva,Cláudio A. Rigo da
Data de Publicação: 2002
Outros Autores: Reis,Rubens J. Pedrosa, Lameiras,Fernando Soares, Vasconcelos,Wander Luiz
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392002000300012
Resumo: This paper discusses the effects of carbonation on the microstructure of Portland cement concrete for long-term durability applications. A class C40 concrete (characteristic compression strength between 40 MPa and 44 MPa on the 28th day, according to Brazilian standard NBR 8953) was chosen for the experimental study of the carbonation effects, from which test samples were molded for accelerated test under a 100%-CO2 atmosphere after physical and mechanical characterization. It was observed that carbonation provoked a reduction of 5% to 12% of the concrete open porosity accessible to water. Flexural strength values obtained after the carbonation tests revealed a decrease of 12% and 25% in relation to the values obtained before tests on the 28th and 91st days, respectively.
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spelling Carbonation-Related Microstructural Changesin Long-Term Durability Concreteconcretecarbonationmicrostructurelong-term durabilityThis paper discusses the effects of carbonation on the microstructure of Portland cement concrete for long-term durability applications. A class C40 concrete (characteristic compression strength between 40 MPa and 44 MPa on the 28th day, according to Brazilian standard NBR 8953) was chosen for the experimental study of the carbonation effects, from which test samples were molded for accelerated test under a 100%-CO2 atmosphere after physical and mechanical characterization. It was observed that carbonation provoked a reduction of 5% to 12% of the concrete open porosity accessible to water. Flexural strength values obtained after the carbonation tests revealed a decrease of 12% and 25% in relation to the values obtained before tests on the 28th and 91st days, respectively.ABM, ABC, ABPol2002-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392002000300012Materials Research v.5 n.3 2002reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392002000300012info:eu-repo/semantics/openAccessSilva,Cláudio A. Rigo daReis,Rubens J. PedrosaLameiras,Fernando SoaresVasconcelos,Wander Luizeng2002-11-06T00:00:00Zoai:scielo:S1516-14392002000300012Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2002-11-06T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Carbonation-Related Microstructural Changesin Long-Term Durability Concrete
title Carbonation-Related Microstructural Changesin Long-Term Durability Concrete
spellingShingle Carbonation-Related Microstructural Changesin Long-Term Durability Concrete
Silva,Cláudio A. Rigo da
concrete
carbonation
microstructure
long-term durability
title_short Carbonation-Related Microstructural Changesin Long-Term Durability Concrete
title_full Carbonation-Related Microstructural Changesin Long-Term Durability Concrete
title_fullStr Carbonation-Related Microstructural Changesin Long-Term Durability Concrete
title_full_unstemmed Carbonation-Related Microstructural Changesin Long-Term Durability Concrete
title_sort Carbonation-Related Microstructural Changesin Long-Term Durability Concrete
author Silva,Cláudio A. Rigo da
author_facet Silva,Cláudio A. Rigo da
Reis,Rubens J. Pedrosa
Lameiras,Fernando Soares
Vasconcelos,Wander Luiz
author_role author
author2 Reis,Rubens J. Pedrosa
Lameiras,Fernando Soares
Vasconcelos,Wander Luiz
author2_role author
author
author
dc.contributor.author.fl_str_mv Silva,Cláudio A. Rigo da
Reis,Rubens J. Pedrosa
Lameiras,Fernando Soares
Vasconcelos,Wander Luiz
dc.subject.por.fl_str_mv concrete
carbonation
microstructure
long-term durability
topic concrete
carbonation
microstructure
long-term durability
description This paper discusses the effects of carbonation on the microstructure of Portland cement concrete for long-term durability applications. A class C40 concrete (characteristic compression strength between 40 MPa and 44 MPa on the 28th day, according to Brazilian standard NBR 8953) was chosen for the experimental study of the carbonation effects, from which test samples were molded for accelerated test under a 100%-CO2 atmosphere after physical and mechanical characterization. It was observed that carbonation provoked a reduction of 5% to 12% of the concrete open porosity accessible to water. Flexural strength values obtained after the carbonation tests revealed a decrease of 12% and 25% in relation to the values obtained before tests on the 28th and 91st days, respectively.
publishDate 2002
dc.date.none.fl_str_mv 2002-09-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392002000300012
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392002000300012
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14392002000300012
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv Materials Research v.5 n.3 2002
reponame:Materials research (São Carlos. Online)
instname:Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
instname_str Universidade Federal de São Carlos (UFSCAR)
instacron_str ABM ABC ABPOL
institution ABM ABC ABPOL
reponame_str Materials research (São Carlos. Online)
collection Materials research (São Carlos. Online)
repository.name.fl_str_mv Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)
repository.mail.fl_str_mv dedz@power.ufscar.br
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