Composition, strength and workability of alkali-activated metakaolin based 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://hdl.handle.net/1822/12782 |
Resumo: | This study has investigated the joint effect of several factors on the workability and mechanical strength of alkali-activated metakaolin based mortars. The factors analysed through a laboratory experiment of 432 specimens, pertaining to 48 different mortar mixes were, sodium hydroxide concentration (10 M,12 M, 14 M, 16 M), the superplasticizer content (1%, 2%, 3%) and the percentage substitution of metakaolin by calcium hydroxide in the mixture (5%, 10%). The results show that the workability decreases with the concentration of sodium hydroxide and increases with the amount of calcium hydroxide and superplasticizer. The results also show that the use of 3% of superplasticizer, combined with a calcium hydroxide content of 10%, allows improving the mortar flow from less than 50% to over 90%, while maintaining a high compressive and flexural strength. |
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Composition, strength and workability of alkali-activated metakaolin based mortarsAlkali-activated mortarsMetakaolinWorkabilityMechanical strengthScience & TechnologyThis study has investigated the joint effect of several factors on the workability and mechanical strength of alkali-activated metakaolin based mortars. The factors analysed through a laboratory experiment of 432 specimens, pertaining to 48 different mortar mixes were, sodium hydroxide concentration (10 M,12 M, 14 M, 16 M), the superplasticizer content (1%, 2%, 3%) and the percentage substitution of metakaolin by calcium hydroxide in the mixture (5%, 10%). The results show that the workability decreases with the concentration of sodium hydroxide and increases with the amount of calcium hydroxide and superplasticizer. The results also show that the use of 3% of superplasticizer, combined with a calcium hydroxide content of 10%, allows improving the mortar flow from less than 50% to over 90%, while maintaining a high compressive and flexural strength.ElsevierUniversidade do MinhoPacheco-Torgal, F.Moura, D.Ding, YiningJalali, Said2011-05-102011-05-10T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/12782eng"Construction and Building Materials". ISSN 0950-0618. 25 (2011) 3732-37450950-061810.1016/j.conbuildmat.2011.04.017info: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:RCAAP2023-07-21T12:13:12Zoai:repositorium.sdum.uminho.pt:1822/12782Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:05:14.915647Repositório 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 |
Composition, strength and workability of alkali-activated metakaolin based mortars |
title |
Composition, strength and workability of alkali-activated metakaolin based mortars |
spellingShingle |
Composition, strength and workability of alkali-activated metakaolin based mortars Pacheco-Torgal, F. Alkali-activated mortars Metakaolin Workability Mechanical strength Science & Technology |
title_short |
Composition, strength and workability of alkali-activated metakaolin based mortars |
title_full |
Composition, strength and workability of alkali-activated metakaolin based mortars |
title_fullStr |
Composition, strength and workability of alkali-activated metakaolin based mortars |
title_full_unstemmed |
Composition, strength and workability of alkali-activated metakaolin based mortars |
title_sort |
Composition, strength and workability of alkali-activated metakaolin based mortars |
author |
Pacheco-Torgal, F. |
author_facet |
Pacheco-Torgal, F. Moura, D. Ding, Yining Jalali, Said |
author_role |
author |
author2 |
Moura, D. Ding, Yining Jalali, Said |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Pacheco-Torgal, F. Moura, D. Ding, Yining Jalali, Said |
dc.subject.por.fl_str_mv |
Alkali-activated mortars Metakaolin Workability Mechanical strength Science & Technology |
topic |
Alkali-activated mortars Metakaolin Workability Mechanical strength Science & Technology |
description |
This study has investigated the joint effect of several factors on the workability and mechanical strength of alkali-activated metakaolin based mortars. The factors analysed through a laboratory experiment of 432 specimens, pertaining to 48 different mortar mixes were, sodium hydroxide concentration (10 M,12 M, 14 M, 16 M), the superplasticizer content (1%, 2%, 3%) and the percentage substitution of metakaolin by calcium hydroxide in the mixture (5%, 10%). The results show that the workability decreases with the concentration of sodium hydroxide and increases with the amount of calcium hydroxide and superplasticizer. The results also show that the use of 3% of superplasticizer, combined with a calcium hydroxide content of 10%, allows improving the mortar flow from less than 50% to over 90%, while maintaining a high compressive and flexural strength. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-05-10 2011-05-10T00:00:00Z |
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/1822/12782 |
url |
http://hdl.handle.net/1822/12782 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
"Construction and Building Materials". ISSN 0950-0618. 25 (2011) 3732-3745 0950-0618 10.1016/j.conbuildmat.2011.04.017 |
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 |
publisher.none.fl_str_mv |
Elsevier |
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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1799132464241704960 |