Influence of the Composition of the Activator on Mechanical Characteristics of a Geopolymer
Autor(a) principal: | |
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Data de Publicação: | 2020 |
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/10316/105794 https://doi.org/10.3390/app10103349 |
Resumo: | Geopolymer materials are characterized by their high durability and low carbon dioxide emissions, when compared with more traditional materials, like concrete made from ordinary Portland cement. These are interesting advantages and might lead to a more sustainable construction industry. The aim of this study is the characterization of the mechanical behavior of the materials obtained by the activation of metakaolin. The activator is a mixture of sodium hydroxide with sodium silicate in di erent proportions. The influence of the composition of activator is studied. For the analysis of the mechanical properties of the di erent mixtures two di erent types of tests were performed, bending tensile strength tests and compressive strength tests. The results show that an activator with not less than 300 g of sodium hydroxide and not exceeding 600 g of sodium silicate per 750 g of metakaolin gives the best results, for both tensile strength and compressive strength. |
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Influence of the Composition of the Activator on Mechanical Characteristics of a GeopolymerGeopolymerAlkali activatedcompressive strengthtensile strengthdeformabilityGeopolymer materials are characterized by their high durability and low carbon dioxide emissions, when compared with more traditional materials, like concrete made from ordinary Portland cement. These are interesting advantages and might lead to a more sustainable construction industry. The aim of this study is the characterization of the mechanical behavior of the materials obtained by the activation of metakaolin. The activator is a mixture of sodium hydroxide with sodium silicate in di erent proportions. The influence of the composition of activator is studied. For the analysis of the mechanical properties of the di erent mixtures two di erent types of tests were performed, bending tensile strength tests and compressive strength tests. The results show that an activator with not less than 300 g of sodium hydroxide and not exceeding 600 g of sodium silicate per 750 g of metakaolin gives the best results, for both tensile strength and compressive strength.MDPI2020info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/105794http://hdl.handle.net/10316/105794https://doi.org/10.3390/app10103349eng2076-3417Lopes, Adelino V.Lopes, SérgioPinto, Isabelinfo: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:RCAAP2023-03-08T21:31:18Zoai:estudogeral.uc.pt:10316/105794Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:22:17.811728Repositório 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 |
Influence of the Composition of the Activator on Mechanical Characteristics of a Geopolymer |
title |
Influence of the Composition of the Activator on Mechanical Characteristics of a Geopolymer |
spellingShingle |
Influence of the Composition of the Activator on Mechanical Characteristics of a Geopolymer Lopes, Adelino V. Geopolymer Alkali activated compressive strength tensile strength deformability |
title_short |
Influence of the Composition of the Activator on Mechanical Characteristics of a Geopolymer |
title_full |
Influence of the Composition of the Activator on Mechanical Characteristics of a Geopolymer |
title_fullStr |
Influence of the Composition of the Activator on Mechanical Characteristics of a Geopolymer |
title_full_unstemmed |
Influence of the Composition of the Activator on Mechanical Characteristics of a Geopolymer |
title_sort |
Influence of the Composition of the Activator on Mechanical Characteristics of a Geopolymer |
author |
Lopes, Adelino V. |
author_facet |
Lopes, Adelino V. Lopes, Sérgio Pinto, Isabel |
author_role |
author |
author2 |
Lopes, Sérgio Pinto, Isabel |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Lopes, Adelino V. Lopes, Sérgio Pinto, Isabel |
dc.subject.por.fl_str_mv |
Geopolymer Alkali activated compressive strength tensile strength deformability |
topic |
Geopolymer Alkali activated compressive strength tensile strength deformability |
description |
Geopolymer materials are characterized by their high durability and low carbon dioxide emissions, when compared with more traditional materials, like concrete made from ordinary Portland cement. These are interesting advantages and might lead to a more sustainable construction industry. The aim of this study is the characterization of the mechanical behavior of the materials obtained by the activation of metakaolin. The activator is a mixture of sodium hydroxide with sodium silicate in di erent proportions. The influence of the composition of activator is studied. For the analysis of the mechanical properties of the di erent mixtures two di erent types of tests were performed, bending tensile strength tests and compressive strength tests. The results show that an activator with not less than 300 g of sodium hydroxide and not exceeding 600 g of sodium silicate per 750 g of metakaolin gives the best results, for both tensile strength and compressive strength. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020 |
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/10316/105794 http://hdl.handle.net/10316/105794 https://doi.org/10.3390/app10103349 |
url |
http://hdl.handle.net/10316/105794 https://doi.org/10.3390/app10103349 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2076-3417 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
MDPI |
publisher.none.fl_str_mv |
MDPI |
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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1799134112732151808 |