Stress-strain curve of concretes with recycled concrete aggregates: analysis of the NBR 8522 methodology
Autor(a) principal: | |
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Data de Publicação: | 2017 |
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=S1983-41952017000300547 |
Resumo: | ABSTRACT This work analyses the methodology "A" (item A.4) employed by the Brazilian Standard ABNT 8522 (ABNT, 2008) for determining the stress-strain behavior of cylindrical specimens of concrete, presenting considerations about possible enhancements aiming it use for concretes with recycled aggregates with automatic test equipment. The methodology specified by the Brazilian Standard presents methodological issues that brings distortions in obtaining the stress-strain curve, as the use of a very limited number of sampling points and by inducing micro cracks and fluency in the elastic behavior of the material due to the use of steady stress levels in the test. The use of a base stress of 0.5 MPa is too low for modern high load test machines designed do high strength concrete test. The work presents a discussion over these subjects, and a proposal of a modified test procedure to avoid such situations. |
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Stress-strain curve of concretes with recycled concrete aggregates: analysis of the NBR 8522 methodology8522 Standard (ABNT, 2008)ConcreteModulus of elasticitystrength-stress behaviourABSTRACT This work analyses the methodology "A" (item A.4) employed by the Brazilian Standard ABNT 8522 (ABNT, 2008) for determining the stress-strain behavior of cylindrical specimens of concrete, presenting considerations about possible enhancements aiming it use for concretes with recycled aggregates with automatic test equipment. The methodology specified by the Brazilian Standard presents methodological issues that brings distortions in obtaining the stress-strain curve, as the use of a very limited number of sampling points and by inducing micro cracks and fluency in the elastic behavior of the material due to the use of steady stress levels in the test. The use of a base stress of 0.5 MPa is too low for modern high load test machines designed do high strength concrete test. The work presents a discussion over these subjects, and a proposal of a modified test procedure to avoid such situations.IBRACON - Instituto Brasileiro do Concreto2017-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952017000300547Revista IBRACON de Estruturas e Materiais v.10 n.3 2017reponame:Revista IBRACON de Estruturas e Materiaisinstname:Instituto Brasileiro do Concreto (IBRACON)instacron:IBRACON10.1590/s1983-41952017000300002info:eu-repo/semantics/openAccessGUJEL,D. A.KAZMIERCZAK,C. S.MASUERO,J. R.eng2017-07-25T00:00:00Zoai:scielo:S1983-41952017000300547Revistahttp://www.revistas.ibracon.org.br/index.php/riemhttps://old.scielo.br/oai/scielo-oai.phpeditores.riem@gmail.com||arlene@ibracon.org.br1983-41951983-4195opendoar:2017-07-25T00:00Revista IBRACON de Estruturas e Materiais - Instituto Brasileiro do Concreto (IBRACON)false |
dc.title.none.fl_str_mv |
Stress-strain curve of concretes with recycled concrete aggregates: analysis of the NBR 8522 methodology |
title |
Stress-strain curve of concretes with recycled concrete aggregates: analysis of the NBR 8522 methodology |
spellingShingle |
Stress-strain curve of concretes with recycled concrete aggregates: analysis of the NBR 8522 methodology GUJEL,D. A. 8522 Standard (ABNT, 2008) Concrete Modulus of elasticity strength-stress behaviour |
title_short |
Stress-strain curve of concretes with recycled concrete aggregates: analysis of the NBR 8522 methodology |
title_full |
Stress-strain curve of concretes with recycled concrete aggregates: analysis of the NBR 8522 methodology |
title_fullStr |
Stress-strain curve of concretes with recycled concrete aggregates: analysis of the NBR 8522 methodology |
title_full_unstemmed |
Stress-strain curve of concretes with recycled concrete aggregates: analysis of the NBR 8522 methodology |
title_sort |
Stress-strain curve of concretes with recycled concrete aggregates: analysis of the NBR 8522 methodology |
author |
GUJEL,D. A. |
author_facet |
GUJEL,D. A. KAZMIERCZAK,C. S. MASUERO,J. R. |
author_role |
author |
author2 |
KAZMIERCZAK,C. S. MASUERO,J. R. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
GUJEL,D. A. KAZMIERCZAK,C. S. MASUERO,J. R. |
dc.subject.por.fl_str_mv |
8522 Standard (ABNT, 2008) Concrete Modulus of elasticity strength-stress behaviour |
topic |
8522 Standard (ABNT, 2008) Concrete Modulus of elasticity strength-stress behaviour |
description |
ABSTRACT This work analyses the methodology "A" (item A.4) employed by the Brazilian Standard ABNT 8522 (ABNT, 2008) for determining the stress-strain behavior of cylindrical specimens of concrete, presenting considerations about possible enhancements aiming it use for concretes with recycled aggregates with automatic test equipment. The methodology specified by the Brazilian Standard presents methodological issues that brings distortions in obtaining the stress-strain curve, as the use of a very limited number of sampling points and by inducing micro cracks and fluency in the elastic behavior of the material due to the use of steady stress levels in the test. The use of a base stress of 0.5 MPa is too low for modern high load test machines designed do high strength concrete test. The work presents a discussion over these subjects, and a proposal of a modified test procedure to avoid such situations. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-06-01 |
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=S1983-41952017000300547 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952017000300547 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/s1983-41952017000300002 |
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.10 n.3 2017 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_ |
1754193605194416128 |