Fine sepiolite addition to air lime-metakaolin mortars
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , , |
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/123456789/1003033 |
Resumo: | Lime-based mortars with admixtures of metakaolin (10,20 and 30 wt.%) and fine sepiolite (5 wt.%) were prepared with the aim of facilitating their use as repair mortars in low humidity conditions. The mechanical properties and the dynamic modulus of elasticity were studied after 28,90 and 180 days of curing. With increasing amount of metakaolin in lime mortars, improved mechanical strength was observed mainly after 90 days. Addition of fine sepiolite, due to its adsorption properties for storing water for later supply to the mortar system and its microfibrous morphology,led to an improvement of compressive and flexural strength of blended air lime/air lime-metakaolin mortars,especially at later ages of curing. Incorporation of fine sepiolite into air lime-metakaolin mortars resulted in comprehensive densification of the core of the mortars. Air lime mortar containing 5% of fine sepiolite and 20% of metakaolin appears to be an optimal admixture. |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Fine sepiolite addition to air lime-metakaolin mortarsLimeMortarMetakaolinSepioliteMechanical propertiesElasticity modulusLime-based mortars with admixtures of metakaolin (10,20 and 30 wt.%) and fine sepiolite (5 wt.%) were prepared with the aim of facilitating their use as repair mortars in low humidity conditions. The mechanical properties and the dynamic modulus of elasticity were studied after 28,90 and 180 days of curing. With increasing amount of metakaolin in lime mortars, improved mechanical strength was observed mainly after 90 days. Addition of fine sepiolite, due to its adsorption properties for storing water for later supply to the mortar system and its microfibrous morphology,led to an improvement of compressive and flexural strength of blended air lime/air lime-metakaolin mortars,especially at later ages of curing. Incorporation of fine sepiolite into air lime-metakaolin mortars resulted in comprehensive densification of the core of the mortars. Air lime mortar containing 5% of fine sepiolite and 20% of metakaolin appears to be an optimal admixture.Mineralogical Society2012-01-13T10:23:20Z2014-10-20T16:32:28Z2017-04-13T10:07:07Z2011-12-01T00:00:00Z2011-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://repositorio.lnec.pt:8080/jspui/handle/123456789/1003033engISSN 0009-8558Andrejkovicová, S.Ferraz, E.Velosa, A.Santos Silva, 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:RCAAP2023-04-01T03:02:20ZPortal AgregadorONG |
dc.title.none.fl_str_mv |
Fine sepiolite addition to air lime-metakaolin mortars |
title |
Fine sepiolite addition to air lime-metakaolin mortars |
spellingShingle |
Fine sepiolite addition to air lime-metakaolin mortars Andrejkovicová, S. Lime Mortar Metakaolin Sepiolite Mechanical properties Elasticity modulus |
title_short |
Fine sepiolite addition to air lime-metakaolin mortars |
title_full |
Fine sepiolite addition to air lime-metakaolin mortars |
title_fullStr |
Fine sepiolite addition to air lime-metakaolin mortars |
title_full_unstemmed |
Fine sepiolite addition to air lime-metakaolin mortars |
title_sort |
Fine sepiolite addition to air lime-metakaolin mortars |
author |
Andrejkovicová, S. |
author_facet |
Andrejkovicová, S. Ferraz, E. Velosa, A. Santos Silva, A. Rocha, F. |
author_role |
author |
author2 |
Ferraz, E. Velosa, A. Santos Silva, A. Rocha, F. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Andrejkovicová, S. Ferraz, E. Velosa, A. Santos Silva, A. Rocha, F. |
dc.subject.por.fl_str_mv |
Lime Mortar Metakaolin Sepiolite Mechanical properties Elasticity modulus |
topic |
Lime Mortar Metakaolin Sepiolite Mechanical properties Elasticity modulus |
description |
Lime-based mortars with admixtures of metakaolin (10,20 and 30 wt.%) and fine sepiolite (5 wt.%) were prepared with the aim of facilitating their use as repair mortars in low humidity conditions. The mechanical properties and the dynamic modulus of elasticity were studied after 28,90 and 180 days of curing. With increasing amount of metakaolin in lime mortars, improved mechanical strength was observed mainly after 90 days. Addition of fine sepiolite, due to its adsorption properties for storing water for later supply to the mortar system and its microfibrous morphology,led to an improvement of compressive and flexural strength of blended air lime/air lime-metakaolin mortars,especially at later ages of curing. Incorporation of fine sepiolite into air lime-metakaolin mortars resulted in comprehensive densification of the core of the mortars. Air lime mortar containing 5% of fine sepiolite and 20% of metakaolin appears to be an optimal admixture. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-12-01T00:00:00Z 2011-12-01 2012-01-13T10:23:20Z 2014-10-20T16:32:28Z 2017-04-13T10:07:07Z |
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://repositorio.lnec.pt:8080/jspui/handle/123456789/1003033 |
url |
http://repositorio.lnec.pt:8080/jspui/handle/123456789/1003033 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
ISSN 0009-8558 |
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 |
Mineralogical Society |
publisher.none.fl_str_mv |
Mineralogical Society |
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 |
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repository.mail.fl_str_mv |
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_version_ |
1777302433209253888 |