Analysis of cementitious matrices self-healing with bacillus bacteria

Detalhes bibliográficos
Autor(a) principal: Muller,Vinicius
Data de Publicação: 2022
Outros Autores: Pacheco,Fernanda, Carvalho,Caroline Macedo, Fernandes,Franciele, Valiati,Victor Hugo, Modolo,Regina Celia Espinosa, Ehrenbring,Hinoel Zamis, 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=S1983-41952022000400204
Resumo: Abstract Bacterial solutions have been studied to promote self-healing of cementitious matrices, however, the concentration of this solutions varied between studies. Consequently, the objective of this study was to evaluate the self-healing potential of different concentrations of Bacillus subtilis AP91 encapsulated in expanded perlite (EP). Visual examination and capillary absorption of water was measured over time. Test samples were also subjected to strength resistance tests. The physiochemical properties of EP and his distribution on the matrix was evaluated. There was no observable trend in the effect of solution concentration on the width of crack healed. However, concentration affected the quantity and length of the fissures healed. Capillary absorption decreased as fissures were healed while no significant changes were measured in strength resistance regardless of the concentration. Results indicated that EP provided suitable encapsulation to the bacterial solution and there is an adequate distribution of the capsules in the cementitious matrix.
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spelling Analysis of cementitious matrices self-healing with bacillus bacteriabacteriaconcretedurabilitycrackingmortarself-healingAbstract Bacterial solutions have been studied to promote self-healing of cementitious matrices, however, the concentration of this solutions varied between studies. Consequently, the objective of this study was to evaluate the self-healing potential of different concentrations of Bacillus subtilis AP91 encapsulated in expanded perlite (EP). Visual examination and capillary absorption of water was measured over time. Test samples were also subjected to strength resistance tests. The physiochemical properties of EP and his distribution on the matrix was evaluated. There was no observable trend in the effect of solution concentration on the width of crack healed. However, concentration affected the quantity and length of the fissures healed. Capillary absorption decreased as fissures were healed while no significant changes were measured in strength resistance regardless of the concentration. Results indicated that EP provided suitable encapsulation to the bacterial solution and there is an adequate distribution of the capsules in the cementitious matrix.IBRACON - Instituto Brasileiro do Concreto2022-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952022000400204Revista IBRACON de Estruturas e Materiais v.15 n.4 2022reponame:Revista IBRACON de Estruturas e Materiaisinstname:Instituto Brasileiro do Concreto (IBRACON)instacron:IBRACON10.1590/s1983-41952022000400004info:eu-repo/semantics/openAccessMuller,ViniciusPacheco,FernandaCarvalho,Caroline MacedoFernandes,FrancieleValiati,Victor HugoModolo,Regina Celia EspinosaEhrenbring,Hinoel ZamisTutikian,Bernardo Fonsecaeng2022-01-20T00:00:00Zoai:scielo:S1983-41952022000400204Revistahttp://www.revistas.ibracon.org.br/index.php/riemhttps://old.scielo.br/oai/scielo-oai.phpeditores.riem@gmail.com||arlene@ibracon.org.br1983-41951983-4195opendoar:2022-01-20T00:00Revista IBRACON de Estruturas e Materiais - Instituto Brasileiro do Concreto (IBRACON)false
dc.title.none.fl_str_mv Analysis of cementitious matrices self-healing with bacillus bacteria
title Analysis of cementitious matrices self-healing with bacillus bacteria
spellingShingle Analysis of cementitious matrices self-healing with bacillus bacteria
Muller,Vinicius
bacteria
concrete
durability
cracking
mortar
self-healing
title_short Analysis of cementitious matrices self-healing with bacillus bacteria
title_full Analysis of cementitious matrices self-healing with bacillus bacteria
title_fullStr Analysis of cementitious matrices self-healing with bacillus bacteria
title_full_unstemmed Analysis of cementitious matrices self-healing with bacillus bacteria
title_sort Analysis of cementitious matrices self-healing with bacillus bacteria
author Muller,Vinicius
author_facet Muller,Vinicius
Pacheco,Fernanda
Carvalho,Caroline Macedo
Fernandes,Franciele
Valiati,Victor Hugo
Modolo,Regina Celia Espinosa
Ehrenbring,Hinoel Zamis
Tutikian,Bernardo Fonseca
author_role author
author2 Pacheco,Fernanda
Carvalho,Caroline Macedo
Fernandes,Franciele
Valiati,Victor Hugo
Modolo,Regina Celia Espinosa
Ehrenbring,Hinoel Zamis
Tutikian,Bernardo Fonseca
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Muller,Vinicius
Pacheco,Fernanda
Carvalho,Caroline Macedo
Fernandes,Franciele
Valiati,Victor Hugo
Modolo,Regina Celia Espinosa
Ehrenbring,Hinoel Zamis
Tutikian,Bernardo Fonseca
dc.subject.por.fl_str_mv bacteria
concrete
durability
cracking
mortar
self-healing
topic bacteria
concrete
durability
cracking
mortar
self-healing
description Abstract Bacterial solutions have been studied to promote self-healing of cementitious matrices, however, the concentration of this solutions varied between studies. Consequently, the objective of this study was to evaluate the self-healing potential of different concentrations of Bacillus subtilis AP91 encapsulated in expanded perlite (EP). Visual examination and capillary absorption of water was measured over time. Test samples were also subjected to strength resistance tests. The physiochemical properties of EP and his distribution on the matrix was evaluated. There was no observable trend in the effect of solution concentration on the width of crack healed. However, concentration affected the quantity and length of the fissures healed. Capillary absorption decreased as fissures were healed while no significant changes were measured in strength resistance regardless of the concentration. Results indicated that EP provided suitable encapsulation to the bacterial solution and there is an adequate distribution of the capsules in the cementitious matrix.
publishDate 2022
dc.date.none.fl_str_mv 2022-01-01
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=S1983-41952022000400204
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952022000400204
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/s1983-41952022000400004
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.15 n.4 2022
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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