Polymer action on alkali–silica reaction in cement mortar

Bibliographic Details
Main Author: Feiteira , J.
Publication Date: 2012
Other Authors: Ribeiro, M. S.
Format: Article
Language: eng
Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Download full: http://repositorio.lnec.pt:8080/jspui/handle/123456789/1004829
Summary: 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:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2025-05-17T03:00:47Zoai:localhost:123456789/1004829Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-29T07:34:16.526130Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
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:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
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instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
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reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
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