Residual mechanical properties of calcareous and granite aggregate concretes after fire
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.11/6493 |
Resumo: | The residual mechanical properties of concrete after a fire depend on the high temperatures to which the material was subjected and the nature of the fire extinguishing process used. Knowledge of these properties is of the utmost importance in an evaluation of the residual load-bearing capacity of reinforced concrete elements and their repair after fire. This paper presents the results of an assessment of the residual mechanical properties of ordinary concrete after fire. Concretes comprising granite and calcareous aggregates were studied as they are commonly used around the world in civil engineering construction. The study considered different loading levels (0·3fcd and 0·7fcd), different cooling processes (cooling in air and by water jet) and varying maximum temperatures of concrete exposure (20, 300, 500 and 700°C). The mechanical properties of the concretes (residual compressive strength, direct and splitting tensile and flexural strengths and modulus of elasticity) after being subjected to high temperatures were studied. High temperatures and sudden cooling of the concrete showed a negative effect on its residual mechanical properties. This effect was more significant for the residual compressive strength than for the other mechanical properties. |
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Residual mechanical properties of calcareous and granite aggregate concretes after fireResidual mechanical propertiesConcrete after fireThe residual mechanical properties of concrete after a fire depend on the high temperatures to which the material was subjected and the nature of the fire extinguishing process used. Knowledge of these properties is of the utmost importance in an evaluation of the residual load-bearing capacity of reinforced concrete elements and their repair after fire. This paper presents the results of an assessment of the residual mechanical properties of ordinary concrete after fire. Concretes comprising granite and calcareous aggregates were studied as they are commonly used around the world in civil engineering construction. The study considered different loading levels (0·3fcd and 0·7fcd), different cooling processes (cooling in air and by water jet) and varying maximum temperatures of concrete exposure (20, 300, 500 and 700°C). The mechanical properties of the concretes (residual compressive strength, direct and splitting tensile and flexural strengths and modulus of elasticity) after being subjected to high temperatures were studied. High temperatures and sudden cooling of the concrete showed a negative effect on its residual mechanical properties. This effect was more significant for the residual compressive strength than for the other mechanical properties.ICE publishingRepositório Científico do Instituto Politécnico de Castelo BrancoSantos, C.C.Rodrigues, João Paulo C.2019-04-29T10:37:07Z20142014-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.11/6493engSANTOS, Cristina Calmeiro dos; Rodrigues, João P. C. (2014) - Residual mechanical properties of calcareous and granite aggregate concretes after fire. Magazine Concrete Research. ISSN 0024-9831. Vol 66, nº 16. p. 845–8570024-983110.1680/macr.14.00005info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-01-16T11:46:34Zoai:repositorio.ipcb.pt:10400.11/6493Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:37:09.796610Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Residual mechanical properties of calcareous and granite aggregate concretes after fire |
title |
Residual mechanical properties of calcareous and granite aggregate concretes after fire |
spellingShingle |
Residual mechanical properties of calcareous and granite aggregate concretes after fire Santos, C.C. Residual mechanical properties Concrete after fire |
title_short |
Residual mechanical properties of calcareous and granite aggregate concretes after fire |
title_full |
Residual mechanical properties of calcareous and granite aggregate concretes after fire |
title_fullStr |
Residual mechanical properties of calcareous and granite aggregate concretes after fire |
title_full_unstemmed |
Residual mechanical properties of calcareous and granite aggregate concretes after fire |
title_sort |
Residual mechanical properties of calcareous and granite aggregate concretes after fire |
author |
Santos, C.C. |
author_facet |
Santos, C.C. Rodrigues, João Paulo C. |
author_role |
author |
author2 |
Rodrigues, João Paulo C. |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Repositório Científico do Instituto Politécnico de Castelo Branco |
dc.contributor.author.fl_str_mv |
Santos, C.C. Rodrigues, João Paulo C. |
dc.subject.por.fl_str_mv |
Residual mechanical properties Concrete after fire |
topic |
Residual mechanical properties Concrete after fire |
description |
The residual mechanical properties of concrete after a fire depend on the high temperatures to which the material was subjected and the nature of the fire extinguishing process used. Knowledge of these properties is of the utmost importance in an evaluation of the residual load-bearing capacity of reinforced concrete elements and their repair after fire. This paper presents the results of an assessment of the residual mechanical properties of ordinary concrete after fire. Concretes comprising granite and calcareous aggregates were studied as they are commonly used around the world in civil engineering construction. The study considered different loading levels (0·3fcd and 0·7fcd), different cooling processes (cooling in air and by water jet) and varying maximum temperatures of concrete exposure (20, 300, 500 and 700°C). The mechanical properties of the concretes (residual compressive strength, direct and splitting tensile and flexural strengths and modulus of elasticity) after being subjected to high temperatures were studied. High temperatures and sudden cooling of the concrete showed a negative effect on its residual mechanical properties. This effect was more significant for the residual compressive strength than for the other mechanical properties. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014 2014-01-01T00:00:00Z 2019-04-29T10:37:07Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.11/6493 |
url |
http://hdl.handle.net/10400.11/6493 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
SANTOS, Cristina Calmeiro dos; Rodrigues, João P. C. (2014) - Residual mechanical properties of calcareous and granite aggregate concretes after fire. Magazine Concrete Research. ISSN 0024-9831. Vol 66, nº 16. p. 845–857 0024-9831 10.1680/macr.14.00005 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
ICE publishing |
publisher.none.fl_str_mv |
ICE publishing |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799130833664081920 |