Polymer action on alkali–silica reaction in cement mortar

Detalhes bibliográficos
Autor(a) principal: Feiteira , J.
Data de Publicação: 2012
Outros Autores: Ribeiro, M. S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://repositorio.lnec.pt:8080/jspui/handle/123456789/1004829
Resumo: Due to the improvement of several properties, such as lower water absorption and increasing resistance to microcracking, polymer modification of mortar and concrete potentially leads to an inhibiting effect on alkali– silica reaction (ASR). In this study, polymer–cement mortars (PCMs) were subjected to accelerated alkali reactivity tests and their performance compared to that of an unmodified cement mortar (CM). Expansion of PCMs was overall higher, but SEM observations revealed apparent lower microcracking intensity of the cement paste, compared to the unmodified CM. Subsequent stiffness damage tests (SDTs) quantified the existing damage after alkali reactivity tests and confirmed the lower microcracking intensity in PCMs.
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spelling Polymer action on alkali–silica reaction in cement mortarSemMicrocrackingAlkali-aggregate reactionPolymersMortarsDue to the improvement of several properties, such as lower water absorption and increasing resistance to microcracking, polymer modification of mortar and concrete potentially leads to an inhibiting effect on alkali– silica reaction (ASR). In this study, polymer–cement mortars (PCMs) were subjected to accelerated alkali reactivity tests and their performance compared to that of an unmodified cement mortar (CM). Expansion of PCMs was overall higher, but SEM observations revealed apparent lower microcracking intensity of the cement paste, compared to the unmodified CM. Subsequent stiffness damage tests (SDTs) quantified the existing damage after alkali reactivity tests and confirmed the lower microcracking intensity in PCMs.Elsevier Ltd2013-06-04T15:12:56Z2014-10-20T15:58:29Z2017-04-13T11:22:59Z2012-09-01T00:00:00Z2012-09info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://repositorio.lnec.pt:8080/jspui/handle/123456789/1004829engFeiteira , J.Ribeiro, M. S.info: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:RCAAP2024-01-13T03:05:49Zoai:localhost:123456789/1004829Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:39:48.157354Repositório 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 Polymer action on alkali–silica reaction in cement mortar
title Polymer action on alkali–silica reaction in cement mortar
spellingShingle Polymer action on alkali–silica reaction in cement mortar
Feiteira , J.
Sem
Microcracking
Alkali-aggregate reaction
Polymers
Mortars
title_short Polymer action on alkali–silica reaction in cement mortar
title_full Polymer action on alkali–silica reaction in cement mortar
title_fullStr Polymer action on alkali–silica reaction in cement mortar
title_full_unstemmed Polymer action on alkali–silica reaction in cement mortar
title_sort Polymer action on alkali–silica reaction in cement mortar
author Feiteira , J.
author_facet Feiteira , J.
Ribeiro, M. S.
author_role author
author2 Ribeiro, M. S.
author2_role author
dc.contributor.author.fl_str_mv Feiteira , J.
Ribeiro, M. S.
dc.subject.por.fl_str_mv Sem
Microcracking
Alkali-aggregate reaction
Polymers
Mortars
topic Sem
Microcracking
Alkali-aggregate reaction
Polymers
Mortars
description Due to the improvement of several properties, such as lower water absorption and increasing resistance to microcracking, polymer modification of mortar and concrete potentially leads to an inhibiting effect on alkali– silica reaction (ASR). In this study, polymer–cement mortars (PCMs) were subjected to accelerated alkali reactivity tests and their performance compared to that of an unmodified cement mortar (CM). Expansion of PCMs was overall higher, but SEM observations revealed apparent lower microcracking intensity of the cement paste, compared to the unmodified CM. Subsequent stiffness damage tests (SDTs) quantified the existing damage after alkali reactivity tests and confirmed the lower microcracking intensity in PCMs.
publishDate 2012
dc.date.none.fl_str_mv 2012-09-01T00:00:00Z
2012-09
2013-06-04T15:12:56Z
2014-10-20T15:58:29Z
2017-04-13T11:22:59Z
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://repositorio.lnec.pt:8080/jspui/handle/123456789/1004829
url http://repositorio.lnec.pt:8080/jspui/handle/123456789/1004829
dc.language.iso.fl_str_mv eng
language eng
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 Elsevier Ltd
publisher.none.fl_str_mv Elsevier Ltd
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
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instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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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
repository.mail.fl_str_mv
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