Influence of transverse rebars on bond between steel reinforcement and cellular concrete with very low compressive strength
Autor(a) principal: | |
---|---|
Data de Publicação: | 2018 |
Outros Autores: | , |
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=S1983-41952018000300620 |
Resumo: | Abstract Cellular concrete is a lightweight concrete obtained by aerating agent, which produces air-voids into the mixture. This work deals with bond between cellular concrete and steel rebars. Pull-out tests of 4,2 mm diameter rebars partly immersed into concrete cylinders were made. Concrete unit weight variation and setting of a transverse rebar into the concrete cylinder center constitute the variables of the work. Three types of mixture were prepared: one without aerating agent (with a dry unit weight of 2255 kg/m3), and two with different aerating agent rates (with a dry unit weight equal to 1565 and 1510 kg/m3). The study revealed the large decrease of bond stress between 4,2 diameter rebars and cellular concrete, due to concrete unit weight reduction. Transverse rebar introduced into concrete cylinder center increased the ultimate pull-out force of the test: the gain of bond produced by the transverse rebar grew up when the cellular concrete unit weight had been reduced. Therefore, special anchorages (not exclusively straight), permitting bond improvement between cellular concrete and rebars could be a solution to improve the mechanical performance of cellular concrete. |
id |
IBRACON-1_25e4b28644b63f7af391b07c9140dc54 |
---|---|
oai_identifier_str |
oai:scielo:S1983-41952018000300620 |
network_acronym_str |
IBRACON-1 |
network_name_str |
Revista IBRACON de Estruturas e Materiais |
repository_id_str |
|
spelling |
Influence of transverse rebars on bond between steel reinforcement and cellular concrete with very low compressive strengthcellular concretebond stressanchoring.Abstract Cellular concrete is a lightweight concrete obtained by aerating agent, which produces air-voids into the mixture. This work deals with bond between cellular concrete and steel rebars. Pull-out tests of 4,2 mm diameter rebars partly immersed into concrete cylinders were made. Concrete unit weight variation and setting of a transverse rebar into the concrete cylinder center constitute the variables of the work. Three types of mixture were prepared: one without aerating agent (with a dry unit weight of 2255 kg/m3), and two with different aerating agent rates (with a dry unit weight equal to 1565 and 1510 kg/m3). The study revealed the large decrease of bond stress between 4,2 diameter rebars and cellular concrete, due to concrete unit weight reduction. Transverse rebar introduced into concrete cylinder center increased the ultimate pull-out force of the test: the gain of bond produced by the transverse rebar grew up when the cellular concrete unit weight had been reduced. Therefore, special anchorages (not exclusively straight), permitting bond improvement between cellular concrete and rebars could be a solution to improve the mechanical performance of cellular concrete.IBRACON - Instituto Brasileiro do Concreto2018-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952018000300620Revista IBRACON de Estruturas e Materiais v.11 n.3 2018reponame:Revista IBRACON de Estruturas e Materiaisinstname:Instituto Brasileiro do Concreto (IBRACON)instacron:IBRACON10.1590/s1983-41952018000300011info:eu-repo/semantics/openAccessSOUDAIS,P. R. N.CAMACHO,J. S.PARSEKIAN,G. A.eng2018-07-11T00:00:00Zoai:scielo:S1983-41952018000300620Revistahttp://www.revistas.ibracon.org.br/index.php/riemhttps://old.scielo.br/oai/scielo-oai.phpeditores.riem@gmail.com||arlene@ibracon.org.br1983-41951983-4195opendoar:2018-07-11T00:00Revista IBRACON de Estruturas e Materiais - Instituto Brasileiro do Concreto (IBRACON)false |
dc.title.none.fl_str_mv |
Influence of transverse rebars on bond between steel reinforcement and cellular concrete with very low compressive strength |
title |
Influence of transverse rebars on bond between steel reinforcement and cellular concrete with very low compressive strength |
spellingShingle |
Influence of transverse rebars on bond between steel reinforcement and cellular concrete with very low compressive strength SOUDAIS,P. R. N. cellular concrete bond stress anchoring. |
title_short |
Influence of transverse rebars on bond between steel reinforcement and cellular concrete with very low compressive strength |
title_full |
Influence of transverse rebars on bond between steel reinforcement and cellular concrete with very low compressive strength |
title_fullStr |
Influence of transverse rebars on bond between steel reinforcement and cellular concrete with very low compressive strength |
title_full_unstemmed |
Influence of transverse rebars on bond between steel reinforcement and cellular concrete with very low compressive strength |
title_sort |
Influence of transverse rebars on bond between steel reinforcement and cellular concrete with very low compressive strength |
author |
SOUDAIS,P. R. N. |
author_facet |
SOUDAIS,P. R. N. CAMACHO,J. S. PARSEKIAN,G. A. |
author_role |
author |
author2 |
CAMACHO,J. S. PARSEKIAN,G. A. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
SOUDAIS,P. R. N. CAMACHO,J. S. PARSEKIAN,G. A. |
dc.subject.por.fl_str_mv |
cellular concrete bond stress anchoring. |
topic |
cellular concrete bond stress anchoring. |
description |
Abstract Cellular concrete is a lightweight concrete obtained by aerating agent, which produces air-voids into the mixture. This work deals with bond between cellular concrete and steel rebars. Pull-out tests of 4,2 mm diameter rebars partly immersed into concrete cylinders were made. Concrete unit weight variation and setting of a transverse rebar into the concrete cylinder center constitute the variables of the work. Three types of mixture were prepared: one without aerating agent (with a dry unit weight of 2255 kg/m3), and two with different aerating agent rates (with a dry unit weight equal to 1565 and 1510 kg/m3). The study revealed the large decrease of bond stress between 4,2 diameter rebars and cellular concrete, due to concrete unit weight reduction. Transverse rebar introduced into concrete cylinder center increased the ultimate pull-out force of the test: the gain of bond produced by the transverse rebar grew up when the cellular concrete unit weight had been reduced. Therefore, special anchorages (not exclusively straight), permitting bond improvement between cellular concrete and rebars could be a solution to improve the mechanical performance of cellular concrete. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-05-01 |
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=S1983-41952018000300620 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952018000300620 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/s1983-41952018000300011 |
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.11 n.3 2018 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 |
_version_ |
1754193605544640512 |