Tungsten mine waste geopolymeric binder: preliminary hydration products investigations

Detalhes bibliográficos
Autor(a) principal: Pacheco-Torgal, F.
Data de Publicação: 2009
Outros Autores: Gomes, J. P. Castro, Jalali, Said
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/9095
Resumo: Geopolymeric mine waste mud (GMWM) binders are obtained from dehydroxylated waste powder mixed with minor quantities of calcium hydroxide, activated with NaOH and waterglass solutions. In this work recent investigations of GMWM binders hydration products have been carried out. The hydration products have been investigated by means of X-ray diffraction (XRD) and scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS). Results indicate that mechanical strength as a function of the concentration of the alkaline activator is closely related to the mineralogy of the hardened geopolymeric binder. Results show that a new crystalline phase, phlogopite a trioctahedral layered structure, was formed as a result of the geopolymerization process. SEM and EDS analysis indicates that the hydration products were alkali aluminosilicate gel and calcium silicate hydrates.
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spelling Tungsten mine waste geopolymeric binder: preliminary hydration products investigationsGeopolymeric binderMine waste mudHydration productsCalcium silicate hydratesAluminosilicate gelScience & TechnologyGeopolymeric mine waste mud (GMWM) binders are obtained from dehydroxylated waste powder mixed with minor quantities of calcium hydroxide, activated with NaOH and waterglass solutions. In this work recent investigations of GMWM binders hydration products have been carried out. The hydration products have been investigated by means of X-ray diffraction (XRD) and scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS). Results indicate that mechanical strength as a function of the concentration of the alkaline activator is closely related to the mineralogy of the hardened geopolymeric binder. Results show that a new crystalline phase, phlogopite a trioctahedral layered structure, was formed as a result of the geopolymerization process. SEM and EDS analysis indicates that the hydration products were alkali aluminosilicate gel and calcium silicate hydrates.ElsevierUniversidade do MinhoPacheco-Torgal, F.Gomes, J. P. CastroJalali, Said20092009-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/9095eng"Construction and Building Materials". ISSN 0950-0618. 23:1 (2009) 200-209.0950-061810.1016/j.conbuildmat.2008.01.003www.elsevier.com/locate/conbuildmatinfo: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:RCAAP2023-07-21T12:05:01Zoai:repositorium.sdum.uminho.pt:1822/9095Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:55:23.220926Repositório 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 Tungsten mine waste geopolymeric binder: preliminary hydration products investigations
title Tungsten mine waste geopolymeric binder: preliminary hydration products investigations
spellingShingle Tungsten mine waste geopolymeric binder: preliminary hydration products investigations
Pacheco-Torgal, F.
Geopolymeric binder
Mine waste mud
Hydration products
Calcium silicate hydrates
Aluminosilicate gel
Science & Technology
title_short Tungsten mine waste geopolymeric binder: preliminary hydration products investigations
title_full Tungsten mine waste geopolymeric binder: preliminary hydration products investigations
title_fullStr Tungsten mine waste geopolymeric binder: preliminary hydration products investigations
title_full_unstemmed Tungsten mine waste geopolymeric binder: preliminary hydration products investigations
title_sort Tungsten mine waste geopolymeric binder: preliminary hydration products investigations
author Pacheco-Torgal, F.
author_facet Pacheco-Torgal, F.
Gomes, J. P. Castro
Jalali, Said
author_role author
author2 Gomes, J. P. Castro
Jalali, Said
author2_role author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Pacheco-Torgal, F.
Gomes, J. P. Castro
Jalali, Said
dc.subject.por.fl_str_mv Geopolymeric binder
Mine waste mud
Hydration products
Calcium silicate hydrates
Aluminosilicate gel
Science & Technology
topic Geopolymeric binder
Mine waste mud
Hydration products
Calcium silicate hydrates
Aluminosilicate gel
Science & Technology
description Geopolymeric mine waste mud (GMWM) binders are obtained from dehydroxylated waste powder mixed with minor quantities of calcium hydroxide, activated with NaOH and waterglass solutions. In this work recent investigations of GMWM binders hydration products have been carried out. The hydration products have been investigated by means of X-ray diffraction (XRD) and scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS). Results indicate that mechanical strength as a function of the concentration of the alkaline activator is closely related to the mineralogy of the hardened geopolymeric binder. Results show that a new crystalline phase, phlogopite a trioctahedral layered structure, was formed as a result of the geopolymerization process. SEM and EDS analysis indicates that the hydration products were alkali aluminosilicate gel and calcium silicate hydrates.
publishDate 2009
dc.date.none.fl_str_mv 2009
2009-01-01T00:00:00Z
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/1822/9095
url http://hdl.handle.net/1822/9095
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv "Construction and Building Materials". ISSN 0950-0618. 23:1 (2009) 200-209.
0950-0618
10.1016/j.conbuildmat.2008.01.003
www.elsevier.com/locate/conbuildmat
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
repository.mail.fl_str_mv
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