Adhesion characterization of tungsten mine waste geopolymeric binder. Influence of OPC concrete substance surface treatment

Detalhes bibliográficos
Autor(a) principal: Pacheco-Torgal, F.
Data de Publicação: 2008
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/1822/7155
Resumo: Tungsten mine waste mud (TMWM) was investigated for its potential use as repair material of ordinary portland cement (OPC) concrete. Bond strength between OPC concrete substrate and three repair materials was analysed. TMWM geopolymeric binder and two commercial repair products were used as repair materials. Bond strength behaviour was assessed from slant shear tests. A total of 128 slant shear specimens were made in order to evaluate bond strength at 1, 3, 7 and 28 days curing. Four kinds of concrete substrate surface treatment were used, as cast against metallic formwork, as cast against wood formwork, saw cut and acid etching. This study indicates that TMWM geopolymeric binders possess very high bond strength even at early ages and that behaviour is not affected by low surface treatment roughness. Commercial repair products on the other hand show very low bond strength and are very dependent on surface treatment roughness. Scanning electron micrographs reveal that TMWM geopolymeric binders chemically bond to the concrete substrate, while cost comparisons show this geopolymeric repair solution is by far the most cost efficient.
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spelling Adhesion characterization of tungsten mine waste geopolymeric binder. Influence of OPC concrete substance surface treatmentGeopolymeric binderMine wasteRepair productsBond strengthScience & TechnologyTungsten mine waste mud (TMWM) was investigated for its potential use as repair material of ordinary portland cement (OPC) concrete. Bond strength between OPC concrete substrate and three repair materials was analysed. TMWM geopolymeric binder and two commercial repair products were used as repair materials. Bond strength behaviour was assessed from slant shear tests. A total of 128 slant shear specimens were made in order to evaluate bond strength at 1, 3, 7 and 28 days curing. Four kinds of concrete substrate surface treatment were used, as cast against metallic formwork, as cast against wood formwork, saw cut and acid etching. This study indicates that TMWM geopolymeric binders possess very high bond strength even at early ages and that behaviour is not affected by low surface treatment roughness. Commercial repair products on the other hand show very low bond strength and are very dependent on surface treatment roughness. Scanning electron micrographs reveal that TMWM geopolymeric binders chemically bond to the concrete substrate, while cost comparisons show this geopolymeric repair solution is by far the most cost efficient.ElsevierUniversidade do MinhoPacheco-Torgal, F.Gomes, J. P. CastroJalali, Said20082008-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/7155eng"Construction and Building Materials". ISSN 0950-0618 (2008) 154-161.0950-061810.1016/j.conbuildmat.2006.10.005www.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:RCAAP2023-07-21T12:10:07Zoai:repositorium.sdum.uminho.pt:1822/7155Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:01:41.068265Repositório 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 Adhesion characterization of tungsten mine waste geopolymeric binder. Influence of OPC concrete substance surface treatment
title Adhesion characterization of tungsten mine waste geopolymeric binder. Influence of OPC concrete substance surface treatment
spellingShingle Adhesion characterization of tungsten mine waste geopolymeric binder. Influence of OPC concrete substance surface treatment
Pacheco-Torgal, F.
Geopolymeric binder
Mine waste
Repair products
Bond strength
Science & Technology
title_short Adhesion characterization of tungsten mine waste geopolymeric binder. Influence of OPC concrete substance surface treatment
title_full Adhesion characterization of tungsten mine waste geopolymeric binder. Influence of OPC concrete substance surface treatment
title_fullStr Adhesion characterization of tungsten mine waste geopolymeric binder. Influence of OPC concrete substance surface treatment
title_full_unstemmed Adhesion characterization of tungsten mine waste geopolymeric binder. Influence of OPC concrete substance surface treatment
title_sort Adhesion characterization of tungsten mine waste geopolymeric binder. Influence of OPC concrete substance surface treatment
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
Repair products
Bond strength
Science & Technology
topic Geopolymeric binder
Mine waste
Repair products
Bond strength
Science & Technology
description Tungsten mine waste mud (TMWM) was investigated for its potential use as repair material of ordinary portland cement (OPC) concrete. Bond strength between OPC concrete substrate and three repair materials was analysed. TMWM geopolymeric binder and two commercial repair products were used as repair materials. Bond strength behaviour was assessed from slant shear tests. A total of 128 slant shear specimens were made in order to evaluate bond strength at 1, 3, 7 and 28 days curing. Four kinds of concrete substrate surface treatment were used, as cast against metallic formwork, as cast against wood formwork, saw cut and acid etching. This study indicates that TMWM geopolymeric binders possess very high bond strength even at early ages and that behaviour is not affected by low surface treatment roughness. Commercial repair products on the other hand show very low bond strength and are very dependent on surface treatment roughness. Scanning electron micrographs reveal that TMWM geopolymeric binders chemically bond to the concrete substrate, while cost comparisons show this geopolymeric repair solution is by far the most cost efficient.
publishDate 2008
dc.date.none.fl_str_mv 2008
2008-01-01T00:00:00Z
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/1822/7155
url http://hdl.handle.net/1822/7155
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv "Construction and Building Materials". ISSN 0950-0618 (2008) 154-161.
0950-0618
10.1016/j.conbuildmat.2006.10.005
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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