Compression resistance of repaired structural concrete elements after core extraction

Detalhes bibliográficos
Autor(a) principal: Bartikoski,Tauana
Data de Publicação: 2020
Outros Autores: Kautzmann,Vanessa Oerle, Ortolan,Vinicius de Kayser, Tutikian,Bernardo Fonseca, Modolo,Regina
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=S1983-41952020000400209
Resumo: Abstract Core sampling for testing is considered a reliable method to provide information on structural materials and is one of the most implemented techniques in the evaluation of concrete elements. However, core drilling results in a decrease in cross section that can compromise structural mechanical strength even if the extracted section is repaired. Norm NBR 7680-1 recommends dry pack as a repair method but also allows the use of other techniques as long as its effectiveness is proven. This work evaluated the resistance of repaired structural prototypes after core drilling sampling. Concrete blocks with 20 MPa resistance were produced from which cores of 100 mm, 75 mm and 50 mm in diameter were extracted. The blocks were repaired with 20 MPa concrete, grout and dry pack techniques. The reconstitution with concrete showed poorest performance, while dry pack led to strengths even higher when compared to reference values.
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spelling Compression resistance of repaired structural concrete elements after core extractioncore samplingdry packgroutcompression strengthAbstract Core sampling for testing is considered a reliable method to provide information on structural materials and is one of the most implemented techniques in the evaluation of concrete elements. However, core drilling results in a decrease in cross section that can compromise structural mechanical strength even if the extracted section is repaired. Norm NBR 7680-1 recommends dry pack as a repair method but also allows the use of other techniques as long as its effectiveness is proven. This work evaluated the resistance of repaired structural prototypes after core drilling sampling. Concrete blocks with 20 MPa resistance were produced from which cores of 100 mm, 75 mm and 50 mm in diameter were extracted. The blocks were repaired with 20 MPa concrete, grout and dry pack techniques. The reconstitution with concrete showed poorest performance, while dry pack led to strengths even higher when compared to reference values.IBRACON - Instituto Brasileiro do Concreto2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952020000400209Revista IBRACON de Estruturas e Materiais v.13 n.4 2020reponame:Revista IBRACON de Estruturas e Materiaisinstname:Instituto Brasileiro do Concreto (IBRACON)instacron:IBRACON10.1590/s1983-41952020000400013info:eu-repo/semantics/openAccessBartikoski,TauanaKautzmann,Vanessa OerleOrtolan,Vinicius de KayserTutikian,Bernardo FonsecaModolo,Reginaeng2020-08-21T00:00:00Zoai:scielo:S1983-41952020000400209Revistahttp://www.revistas.ibracon.org.br/index.php/riemhttps://old.scielo.br/oai/scielo-oai.phpeditores.riem@gmail.com||arlene@ibracon.org.br1983-41951983-4195opendoar:2020-08-21T00:00Revista IBRACON de Estruturas e Materiais - Instituto Brasileiro do Concreto (IBRACON)false
dc.title.none.fl_str_mv Compression resistance of repaired structural concrete elements after core extraction
title Compression resistance of repaired structural concrete elements after core extraction
spellingShingle Compression resistance of repaired structural concrete elements after core extraction
Bartikoski,Tauana
core sampling
dry pack
grout
compression strength
title_short Compression resistance of repaired structural concrete elements after core extraction
title_full Compression resistance of repaired structural concrete elements after core extraction
title_fullStr Compression resistance of repaired structural concrete elements after core extraction
title_full_unstemmed Compression resistance of repaired structural concrete elements after core extraction
title_sort Compression resistance of repaired structural concrete elements after core extraction
author Bartikoski,Tauana
author_facet Bartikoski,Tauana
Kautzmann,Vanessa Oerle
Ortolan,Vinicius de Kayser
Tutikian,Bernardo Fonseca
Modolo,Regina
author_role author
author2 Kautzmann,Vanessa Oerle
Ortolan,Vinicius de Kayser
Tutikian,Bernardo Fonseca
Modolo,Regina
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Bartikoski,Tauana
Kautzmann,Vanessa Oerle
Ortolan,Vinicius de Kayser
Tutikian,Bernardo Fonseca
Modolo,Regina
dc.subject.por.fl_str_mv core sampling
dry pack
grout
compression strength
topic core sampling
dry pack
grout
compression strength
description Abstract Core sampling for testing is considered a reliable method to provide information on structural materials and is one of the most implemented techniques in the evaluation of concrete elements. However, core drilling results in a decrease in cross section that can compromise structural mechanical strength even if the extracted section is repaired. Norm NBR 7680-1 recommends dry pack as a repair method but also allows the use of other techniques as long as its effectiveness is proven. This work evaluated the resistance of repaired structural prototypes after core drilling sampling. Concrete blocks with 20 MPa resistance were produced from which cores of 100 mm, 75 mm and 50 mm in diameter were extracted. The blocks were repaired with 20 MPa concrete, grout and dry pack techniques. The reconstitution with concrete showed poorest performance, while dry pack led to strengths even higher when compared to reference values.
publishDate 2020
dc.date.none.fl_str_mv 2020-01-01
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=S1983-41952020000400209
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952020000400209
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/s1983-41952020000400013
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.13 n.4 2020
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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