Residual strength of reinforced concrete stub columns subject to moderate temperatures

Detalhes bibliográficos
Autor(a) principal: Lima,Eduardo Henrique Barros
Data de Publicação: 2021
Outros Autores: Cardoso,Daniel Carlos Taissum
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=S1983-41952021000300206
Resumo: abstract: This work aims to evaluate the residual strength of reinforced concrete stub columns subjected to moderate temperatures. To accomplish this task, an experimental program was carried out including compression tests on plain concrete specimens exposed to temperatures up to 600 ºC and on reinforced concrete stub columns with two different tie configurations heated at a constant rate for up to 120 min. The results show a loss of residual compressive strength with temperature and the beneficial influence of ties to prevent the spalling phenomenon, although samples with more ties exhibited lower capacity. Finally, the results were compared to the analytical prediction using a cross-sectional approach with idealized stress-strain relations, showing a good correlation. The applicability of the Isotherm 500 ºC method is discussed for moderate temperatures.
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spelling Residual strength of reinforced concrete stub columns subject to moderate temperaturesresidual strengthcolumnsreinforced concretemoderate temperaturesabstract: This work aims to evaluate the residual strength of reinforced concrete stub columns subjected to moderate temperatures. To accomplish this task, an experimental program was carried out including compression tests on plain concrete specimens exposed to temperatures up to 600 ºC and on reinforced concrete stub columns with two different tie configurations heated at a constant rate for up to 120 min. The results show a loss of residual compressive strength with temperature and the beneficial influence of ties to prevent the spalling phenomenon, although samples with more ties exhibited lower capacity. Finally, the results were compared to the analytical prediction using a cross-sectional approach with idealized stress-strain relations, showing a good correlation. The applicability of the Isotherm 500 ºC method is discussed for moderate temperatures.IBRACON - Instituto Brasileiro do Concreto2021-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952021000300206Revista IBRACON de Estruturas e Materiais v.14 n.3 2021reponame:Revista IBRACON de Estruturas e Materiaisinstname:Instituto Brasileiro do Concreto (IBRACON)instacron:IBRACON10.1590/s1983-41952021000300011info:eu-repo/semantics/openAccessLima,Eduardo Henrique BarrosCardoso,Daniel Carlos Taissumeng2021-04-22T00:00:00Zoai:scielo:S1983-41952021000300206Revistahttp://www.revistas.ibracon.org.br/index.php/riemhttps://old.scielo.br/oai/scielo-oai.phpeditores.riem@gmail.com||arlene@ibracon.org.br1983-41951983-4195opendoar:2021-04-22T00:00Revista IBRACON de Estruturas e Materiais - Instituto Brasileiro do Concreto (IBRACON)false
dc.title.none.fl_str_mv Residual strength of reinforced concrete stub columns subject to moderate temperatures
title Residual strength of reinforced concrete stub columns subject to moderate temperatures
spellingShingle Residual strength of reinforced concrete stub columns subject to moderate temperatures
Lima,Eduardo Henrique Barros
residual strength
columns
reinforced concrete
moderate temperatures
title_short Residual strength of reinforced concrete stub columns subject to moderate temperatures
title_full Residual strength of reinforced concrete stub columns subject to moderate temperatures
title_fullStr Residual strength of reinforced concrete stub columns subject to moderate temperatures
title_full_unstemmed Residual strength of reinforced concrete stub columns subject to moderate temperatures
title_sort Residual strength of reinforced concrete stub columns subject to moderate temperatures
author Lima,Eduardo Henrique Barros
author_facet Lima,Eduardo Henrique Barros
Cardoso,Daniel Carlos Taissum
author_role author
author2 Cardoso,Daniel Carlos Taissum
author2_role author
dc.contributor.author.fl_str_mv Lima,Eduardo Henrique Barros
Cardoso,Daniel Carlos Taissum
dc.subject.por.fl_str_mv residual strength
columns
reinforced concrete
moderate temperatures
topic residual strength
columns
reinforced concrete
moderate temperatures
description abstract: This work aims to evaluate the residual strength of reinforced concrete stub columns subjected to moderate temperatures. To accomplish this task, an experimental program was carried out including compression tests on plain concrete specimens exposed to temperatures up to 600 ºC and on reinforced concrete stub columns with two different tie configurations heated at a constant rate for up to 120 min. The results show a loss of residual compressive strength with temperature and the beneficial influence of ties to prevent the spalling phenomenon, although samples with more ties exhibited lower capacity. Finally, the results were compared to the analytical prediction using a cross-sectional approach with idealized stress-strain relations, showing a good correlation. The applicability of the Isotherm 500 ºC method is discussed for moderate temperatures.
publishDate 2021
dc.date.none.fl_str_mv 2021-01-01
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=S1983-41952021000300206
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952021000300206
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/s1983-41952021000300011
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 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.14 n.3 2021
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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