Mitigation of Internal Expansive Reaction: the Role of Tungsten Mine Sludge

Detalhes bibliográficos
Autor(a) principal: Sousa, S.
Data de Publicação: 2013
Outros Autores: Santos Silva, A., Velosa, A., Gameiro, A., Rocha, F.
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/123456789/1005107
Resumo: The concrete degradation caused by internal expansive reaction (IER) is a problem that affects many structures in the world. These reactions, which include the alkali-silica reaction (ASR)and the internal sulphate reaction (ISR) related with delayed ettringite formation, are very dangerous, due the expansive behavior of products formed, that cause the cracking of concrete. So it is urgent to find preventive methods to avoid or mitigate the onset of these reactions in new structures. This work aims to show the applicability of sludge from a tungsten mine in the mitigation of the IER. To evaluate the effect of sludge in the mitigation of ASR and ISR, mortar and concrete mixes were produced with 30% (%in mass) of cement replacement. The results obtained so far allow stating that tungsten mine sludge as Portland cement replacement could be effective in the ASR and ISR mitigation.
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spelling Mitigation of Internal Expansive Reaction: the Role of Tungsten Mine SludgeAlkali-silica reactionDelayed ettringite formationMitigationTungsten mine sludgeConcreteThe concrete degradation caused by internal expansive reaction (IER) is a problem that affects many structures in the world. These reactions, which include the alkali-silica reaction (ASR)and the internal sulphate reaction (ISR) related with delayed ettringite formation, are very dangerous, due the expansive behavior of products formed, that cause the cracking of concrete. So it is urgent to find preventive methods to avoid or mitigate the onset of these reactions in new structures. This work aims to show the applicability of sludge from a tungsten mine in the mitigation of the IER. To evaluate the effect of sludge in the mitigation of ASR and ISR, mortar and concrete mixes were produced with 30% (%in mass) of cement replacement. The results obtained so far allow stating that tungsten mine sludge as Portland cement replacement could be effective in the ASR and ISR mitigation.Trans Tech Publications2013-08-21T14:59:33Z2014-10-20T16:31:37Z2017-04-12T14:52:10Z2013-01-01T00:00:00Z2013info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://repositorio.lnec.pt:8080/jspui/handle/123456789/1005107engdoi:10.4028/www.scientific.net/MSF.730-732.468Sousa, S.Santos Silva, A.Velosa, A.Gameiro, A.Rocha, F.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:RCAAP2024-01-13T03:02:22Zoai:localhost:123456789/1005107Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:38:32.435328Repositório 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 Mitigation of Internal Expansive Reaction: the Role of Tungsten Mine Sludge
title Mitigation of Internal Expansive Reaction: the Role of Tungsten Mine Sludge
spellingShingle Mitigation of Internal Expansive Reaction: the Role of Tungsten Mine Sludge
Sousa, S.
Alkali-silica reaction
Delayed ettringite formation
Mitigation
Tungsten mine sludge
Concrete
title_short Mitigation of Internal Expansive Reaction: the Role of Tungsten Mine Sludge
title_full Mitigation of Internal Expansive Reaction: the Role of Tungsten Mine Sludge
title_fullStr Mitigation of Internal Expansive Reaction: the Role of Tungsten Mine Sludge
title_full_unstemmed Mitigation of Internal Expansive Reaction: the Role of Tungsten Mine Sludge
title_sort Mitigation of Internal Expansive Reaction: the Role of Tungsten Mine Sludge
author Sousa, S.
author_facet Sousa, S.
Santos Silva, A.
Velosa, A.
Gameiro, A.
Rocha, F.
author_role author
author2 Santos Silva, A.
Velosa, A.
Gameiro, A.
Rocha, F.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Sousa, S.
Santos Silva, A.
Velosa, A.
Gameiro, A.
Rocha, F.
dc.subject.por.fl_str_mv Alkali-silica reaction
Delayed ettringite formation
Mitigation
Tungsten mine sludge
Concrete
topic Alkali-silica reaction
Delayed ettringite formation
Mitigation
Tungsten mine sludge
Concrete
description The concrete degradation caused by internal expansive reaction (IER) is a problem that affects many structures in the world. These reactions, which include the alkali-silica reaction (ASR)and the internal sulphate reaction (ISR) related with delayed ettringite formation, are very dangerous, due the expansive behavior of products formed, that cause the cracking of concrete. So it is urgent to find preventive methods to avoid or mitigate the onset of these reactions in new structures. This work aims to show the applicability of sludge from a tungsten mine in the mitigation of the IER. To evaluate the effect of sludge in the mitigation of ASR and ISR, mortar and concrete mixes were produced with 30% (%in mass) of cement replacement. The results obtained so far allow stating that tungsten mine sludge as Portland cement replacement could be effective in the ASR and ISR mitigation.
publishDate 2013
dc.date.none.fl_str_mv 2013-08-21T14:59:33Z
2013-01-01T00:00:00Z
2013
2014-10-20T16:31:37Z
2017-04-12T14:52:10Z
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/123456789/1005107
url http://repositorio.lnec.pt:8080/jspui/handle/123456789/1005107
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv doi:10.4028/www.scientific.net/MSF.730-732.468
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 Trans Tech Publications
publisher.none.fl_str_mv Trans Tech Publications
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
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str 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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