Evaluation of concrete self-healing by encapsulated sodium metasilicate in perlite and expanded clay

Detalhes bibliográficos
Autor(a) principal: Pacheco,Fernanda
Data de Publicação: 2023
Outros Autores: Boscaini,Cláudio Henrique, Gauto,Thaize Nascimento, Müller,Vinicius, Ehrenbring,Hinoel Zamis, Modolo,Regina Célia Espinosa, Tutikian,Bernardo Fonseca
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=S1983-41952023000200201
Resumo: abstract: Investigating the behavior of self-healing cementitious composites is necessary to know alternatives that can be applied in structures increasing their life service. Therefore, this study evaluated concrete self-he aling from the use of expanded perlite (EP) and expanded clay (EC) capsules impregnated with a sodium metasilicate solution. These materials were used to substitute natural aggregates in concrete in proportions of 0 wt·%, 15 wt·% and 30 wt·% which were cured in humid or submerged environments. Cracking was induced with a flexural test and a closing with cicatrization product. was evaluated and measured visually with a software. Capillary absorption tests indicated a reduction in the porosity of samples which incorporated self-healing materials, considering it as an important property related to durability. Samples with EP achieved 100% self-healing with 15% substitution. Crack filling was achieved in cracks up to 0.43 mm wide. Samples with EC achieved 50% crack recovery under humid curing and 90% under submerged curing. It was concluded that incorporating the sodium silicate allowed improvements to fissure sealing and it is an alternative to produce self-healing concrete in Brazil. EP was more effective than EC as encapsulating material. Despite that, the EP did not impact the compressive strength due to its small size and better packing of the mixture, Also, EP presented higher healing percentage when comparing with samples containing EC.
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spelling Evaluation of concrete self-healing by encapsulated sodium metasilicate in perlite and expanded clayconcreteself-healingexpanded perlitesodium meta-silicateabstract: Investigating the behavior of self-healing cementitious composites is necessary to know alternatives that can be applied in structures increasing their life service. Therefore, this study evaluated concrete self-he aling from the use of expanded perlite (EP) and expanded clay (EC) capsules impregnated with a sodium metasilicate solution. These materials were used to substitute natural aggregates in concrete in proportions of 0 wt·%, 15 wt·% and 30 wt·% which were cured in humid or submerged environments. Cracking was induced with a flexural test and a closing with cicatrization product. was evaluated and measured visually with a software. Capillary absorption tests indicated a reduction in the porosity of samples which incorporated self-healing materials, considering it as an important property related to durability. Samples with EP achieved 100% self-healing with 15% substitution. Crack filling was achieved in cracks up to 0.43 mm wide. Samples with EC achieved 50% crack recovery under humid curing and 90% under submerged curing. It was concluded that incorporating the sodium silicate allowed improvements to fissure sealing and it is an alternative to produce self-healing concrete in Brazil. EP was more effective than EC as encapsulating material. Despite that, the EP did not impact the compressive strength due to its small size and better packing of the mixture, Also, EP presented higher healing percentage when comparing with samples containing EC.IBRACON - Instituto Brasileiro do Concreto2023-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952023000200201Revista IBRACON de Estruturas e Materiais v.16 n.2 2023reponame:Revista IBRACON de Estruturas e Materiaisinstname:Instituto Brasileiro do Concreto (IBRACON)instacron:IBRACON10.1590/s1983-41952023000200001info:eu-repo/semantics/openAccessPacheco,FernandaBoscaini,Cláudio HenriqueGauto,Thaize NascimentoMüller,ViniciusEhrenbring,Hinoel ZamisModolo,Regina Célia EspinosaTutikian,Bernardo Fonsecaeng2022-08-22T00:00:00Zoai:scielo:S1983-41952023000200201Revistahttp://www.revistas.ibracon.org.br/index.php/riemhttps://old.scielo.br/oai/scielo-oai.phpeditores.riem@gmail.com||arlene@ibracon.org.br1983-41951983-4195opendoar:2022-08-22T00:00Revista IBRACON de Estruturas e Materiais - Instituto Brasileiro do Concreto (IBRACON)false
dc.title.none.fl_str_mv Evaluation of concrete self-healing by encapsulated sodium metasilicate in perlite and expanded clay
title Evaluation of concrete self-healing by encapsulated sodium metasilicate in perlite and expanded clay
spellingShingle Evaluation of concrete self-healing by encapsulated sodium metasilicate in perlite and expanded clay
Pacheco,Fernanda
concrete
self-healing
expanded perlite
sodium meta-silicate
title_short Evaluation of concrete self-healing by encapsulated sodium metasilicate in perlite and expanded clay
title_full Evaluation of concrete self-healing by encapsulated sodium metasilicate in perlite and expanded clay
title_fullStr Evaluation of concrete self-healing by encapsulated sodium metasilicate in perlite and expanded clay
title_full_unstemmed Evaluation of concrete self-healing by encapsulated sodium metasilicate in perlite and expanded clay
title_sort Evaluation of concrete self-healing by encapsulated sodium metasilicate in perlite and expanded clay
author Pacheco,Fernanda
author_facet Pacheco,Fernanda
Boscaini,Cláudio Henrique
Gauto,Thaize Nascimento
Müller,Vinicius
Ehrenbring,Hinoel Zamis
Modolo,Regina Célia Espinosa
Tutikian,Bernardo Fonseca
author_role author
author2 Boscaini,Cláudio Henrique
Gauto,Thaize Nascimento
Müller,Vinicius
Ehrenbring,Hinoel Zamis
Modolo,Regina Célia Espinosa
Tutikian,Bernardo Fonseca
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Pacheco,Fernanda
Boscaini,Cláudio Henrique
Gauto,Thaize Nascimento
Müller,Vinicius
Ehrenbring,Hinoel Zamis
Modolo,Regina Célia Espinosa
Tutikian,Bernardo Fonseca
dc.subject.por.fl_str_mv concrete
self-healing
expanded perlite
sodium meta-silicate
topic concrete
self-healing
expanded perlite
sodium meta-silicate
description abstract: Investigating the behavior of self-healing cementitious composites is necessary to know alternatives that can be applied in structures increasing their life service. Therefore, this study evaluated concrete self-he aling from the use of expanded perlite (EP) and expanded clay (EC) capsules impregnated with a sodium metasilicate solution. These materials were used to substitute natural aggregates in concrete in proportions of 0 wt·%, 15 wt·% and 30 wt·% which were cured in humid or submerged environments. Cracking was induced with a flexural test and a closing with cicatrization product. was evaluated and measured visually with a software. Capillary absorption tests indicated a reduction in the porosity of samples which incorporated self-healing materials, considering it as an important property related to durability. Samples with EP achieved 100% self-healing with 15% substitution. Crack filling was achieved in cracks up to 0.43 mm wide. Samples with EC achieved 50% crack recovery under humid curing and 90% under submerged curing. It was concluded that incorporating the sodium silicate allowed improvements to fissure sealing and it is an alternative to produce self-healing concrete in Brazil. EP was more effective than EC as encapsulating material. Despite that, the EP did not impact the compressive strength due to its small size and better packing of the mixture, Also, EP presented higher healing percentage when comparing with samples containing EC.
publishDate 2023
dc.date.none.fl_str_mv 2023-01-01
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=S1983-41952023000200201
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952023000200201
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/s1983-41952023000200001
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.16 n.2 2023
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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