Microstructure of concrete subjected to elevated temperatures: physico-chemical changes and analysis techniques

Detalhes bibliográficos
Autor(a) principal: Fernandes,B.
Data de Publicação: 2017
Outros Autores: Gil,A. M., Bolina,F. L., Tutikian,B. F.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista IBRACON de Estruturas e Materiais
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952017000400838
Resumo: ABSTRACT The exposure of concrete to high temperatures, such as in a fire, leads to physical and chemical changes, which may cause deterioration of mechanical properties, cracking and spalling. This paper presents a critical review of microstructural changes in concrete exposed to high temperature. The transformations developed in the cement paste, aggregates and interfacial transition zone were studied, as well as the experimental techniques of microanalysis presented in recent related researches. Lastly, a critical analysis of experimental results from literature was performed. It was verified that microstructural changes are related to concrete properties and the heating process. The experimental techniques has a potential use for assessment of thermally damaged concrete, however, these techniques must be applied simultaneously and specific methods must be established.
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spelling Microstructure of concrete subjected to elevated temperatures: physico-chemical changes and analysis techniquesmicrostructureconcreteconcrete structureshigh temperaturesABSTRACT The exposure of concrete to high temperatures, such as in a fire, leads to physical and chemical changes, which may cause deterioration of mechanical properties, cracking and spalling. This paper presents a critical review of microstructural changes in concrete exposed to high temperature. The transformations developed in the cement paste, aggregates and interfacial transition zone were studied, as well as the experimental techniques of microanalysis presented in recent related researches. Lastly, a critical analysis of experimental results from literature was performed. It was verified that microstructural changes are related to concrete properties and the heating process. The experimental techniques has a potential use for assessment of thermally damaged concrete, however, these techniques must be applied simultaneously and specific methods must be established.IBRACON - Instituto Brasileiro do Concreto2017-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952017000400838Revista IBRACON de Estruturas e Materiais v.10 n.4 2017reponame:Revista IBRACON de Estruturas e Materiaisinstname:Instituto Brasileiro do Concreto (IBRACON)instacron:IBRACON10.1590/s1983-41952017000400004info:eu-repo/semantics/openAccessFernandes,B.Gil,A. M.Bolina,F. L.Tutikian,B. F.eng2017-08-31T00:00:00Zoai:scielo:S1983-41952017000400838Revistahttp://www.revistas.ibracon.org.br/index.php/riemhttps://old.scielo.br/oai/scielo-oai.phpeditores.riem@gmail.com||arlene@ibracon.org.br1983-41951983-4195opendoar:2017-08-31T00:00Revista IBRACON de Estruturas e Materiais - Instituto Brasileiro do Concreto (IBRACON)false
dc.title.none.fl_str_mv Microstructure of concrete subjected to elevated temperatures: physico-chemical changes and analysis techniques
title Microstructure of concrete subjected to elevated temperatures: physico-chemical changes and analysis techniques
spellingShingle Microstructure of concrete subjected to elevated temperatures: physico-chemical changes and analysis techniques
Fernandes,B.
microstructure
concrete
concrete structures
high temperatures
title_short Microstructure of concrete subjected to elevated temperatures: physico-chemical changes and analysis techniques
title_full Microstructure of concrete subjected to elevated temperatures: physico-chemical changes and analysis techniques
title_fullStr Microstructure of concrete subjected to elevated temperatures: physico-chemical changes and analysis techniques
title_full_unstemmed Microstructure of concrete subjected to elevated temperatures: physico-chemical changes and analysis techniques
title_sort Microstructure of concrete subjected to elevated temperatures: physico-chemical changes and analysis techniques
author Fernandes,B.
author_facet Fernandes,B.
Gil,A. M.
Bolina,F. L.
Tutikian,B. F.
author_role author
author2 Gil,A. M.
Bolina,F. L.
Tutikian,B. F.
author2_role author
author
author
dc.contributor.author.fl_str_mv Fernandes,B.
Gil,A. M.
Bolina,F. L.
Tutikian,B. F.
dc.subject.por.fl_str_mv microstructure
concrete
concrete structures
high temperatures
topic microstructure
concrete
concrete structures
high temperatures
description ABSTRACT The exposure of concrete to high temperatures, such as in a fire, leads to physical and chemical changes, which may cause deterioration of mechanical properties, cracking and spalling. This paper presents a critical review of microstructural changes in concrete exposed to high temperature. The transformations developed in the cement paste, aggregates and interfacial transition zone were studied, as well as the experimental techniques of microanalysis presented in recent related researches. Lastly, a critical analysis of experimental results from literature was performed. It was verified that microstructural changes are related to concrete properties and the heating process. The experimental techniques has a potential use for assessment of thermally damaged concrete, however, these techniques must be applied simultaneously and specific methods must be established.
publishDate 2017
dc.date.none.fl_str_mv 2017-08-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952017000400838
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952017000400838
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/s1983-41952017000400004
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv IBRACON - Instituto Brasileiro do Concreto
publisher.none.fl_str_mv IBRACON - Instituto Brasileiro do Concreto
dc.source.none.fl_str_mv Revista IBRACON de Estruturas e Materiais v.10 n.4 2017
reponame:Revista IBRACON de Estruturas e Materiais
instname:Instituto Brasileiro do Concreto (IBRACON)
instacron:IBRACON
instname_str Instituto Brasileiro do Concreto (IBRACON)
instacron_str IBRACON
institution IBRACON
reponame_str Revista IBRACON de Estruturas e Materiais
collection Revista IBRACON de Estruturas e Materiais
repository.name.fl_str_mv Revista IBRACON de Estruturas e Materiais - Instituto Brasileiro do Concreto (IBRACON)
repository.mail.fl_str_mv editores.riem@gmail.com||arlene@ibracon.org.br
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