Microstructure of concrete with agg regates from construction and demolition waste recycling plants

Detalhes bibliográficos
Autor(a) principal: Bravo, Miguel
Data de Publicação: 2015
Outros Autores: Silva, António Santos, De Brito, Jorge, Evangelista, Luis
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.21/8192
Resumo: This paper intends to analyze the microstructure of concrete with recycled aggregates (RA) from construction and demolition waste from various Portuguese recycling plants. To that effect, several scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) analyses were performed. Various concrete mixes were evaluated in order to analyze the influence of the RA’s collection point and consequently of their composition on the mixes’ characteristics. Afterward all the mixes were subjected to the capillary water absorption test in order to quantitatively evaluate their porosity. Results from the SEM/EDS analysis were compared with those from capillary water absorption test. The SEM/EDS analysis showed that the bond capacity of aggregates to the new cement paste is greatly influenced by the RA’s nature. On the other hand, there was na increase in porosity with the incorporation of RA.
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spelling Microstructure of concrete with agg regates from construction and demolition waste recycling plantsConcreteConstruction and demolition wasteRecycled aggregatesITZMicroscopyThis paper intends to analyze the microstructure of concrete with recycled aggregates (RA) from construction and demolition waste from various Portuguese recycling plants. To that effect, several scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) analyses were performed. Various concrete mixes were evaluated in order to analyze the influence of the RA’s collection point and consequently of their composition on the mixes’ characteristics. Afterward all the mixes were subjected to the capillary water absorption test in order to quantitatively evaluate their porosity. Results from the SEM/EDS analysis were compared with those from capillary water absorption test. The SEM/EDS analysis showed that the bond capacity of aggregates to the new cement paste is greatly influenced by the RA’s nature. On the other hand, there was na increase in porosity with the incorporation of RA.Microscopy Society of AmericaRCIPLBravo, MiguelSilva, António SantosDe Brito, JorgeEvangelista, Luis2018-03-05T09:40:34Z2015-112015-11-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.21/8192engBRAVO, Miguel; SILVA, António Santos; BRITO, Jorge de; EVANGELISTA, Luís – Microstructure of concrete with aggregates from construction and demolition waste recycling plants. Microscopy and Microanalysis. ISSN 1431-9276. Vol. 22, N.º 1 (2016), pp. 149-1671431-927610.1017/S1431927615015512metadata only accessinfo: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:RCAAP2023-08-03T09:55:15Zoai:repositorio.ipl.pt:10400.21/8192Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:16:59.853218Repositório 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 Microstructure of concrete with agg regates from construction and demolition waste recycling plants
title Microstructure of concrete with agg regates from construction and demolition waste recycling plants
spellingShingle Microstructure of concrete with agg regates from construction and demolition waste recycling plants
Bravo, Miguel
Concrete
Construction and demolition waste
Recycled aggregates
ITZ
Microscopy
title_short Microstructure of concrete with agg regates from construction and demolition waste recycling plants
title_full Microstructure of concrete with agg regates from construction and demolition waste recycling plants
title_fullStr Microstructure of concrete with agg regates from construction and demolition waste recycling plants
title_full_unstemmed Microstructure of concrete with agg regates from construction and demolition waste recycling plants
title_sort Microstructure of concrete with agg regates from construction and demolition waste recycling plants
author Bravo, Miguel
author_facet Bravo, Miguel
Silva, António Santos
De Brito, Jorge
Evangelista, Luis
author_role author
author2 Silva, António Santos
De Brito, Jorge
Evangelista, Luis
author2_role author
author
author
dc.contributor.none.fl_str_mv RCIPL
dc.contributor.author.fl_str_mv Bravo, Miguel
Silva, António Santos
De Brito, Jorge
Evangelista, Luis
dc.subject.por.fl_str_mv Concrete
Construction and demolition waste
Recycled aggregates
ITZ
Microscopy
topic Concrete
Construction and demolition waste
Recycled aggregates
ITZ
Microscopy
description This paper intends to analyze the microstructure of concrete with recycled aggregates (RA) from construction and demolition waste from various Portuguese recycling plants. To that effect, several scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) analyses were performed. Various concrete mixes were evaluated in order to analyze the influence of the RA’s collection point and consequently of their composition on the mixes’ characteristics. Afterward all the mixes were subjected to the capillary water absorption test in order to quantitatively evaluate their porosity. Results from the SEM/EDS analysis were compared with those from capillary water absorption test. The SEM/EDS analysis showed that the bond capacity of aggregates to the new cement paste is greatly influenced by the RA’s nature. On the other hand, there was na increase in porosity with the incorporation of RA.
publishDate 2015
dc.date.none.fl_str_mv 2015-11
2015-11-01T00:00:00Z
2018-03-05T09:40:34Z
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/10400.21/8192
url http://hdl.handle.net/10400.21/8192
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv BRAVO, Miguel; SILVA, António Santos; BRITO, Jorge de; EVANGELISTA, Luís – Microstructure of concrete with aggregates from construction and demolition waste recycling plants. Microscopy and Microanalysis. ISSN 1431-9276. Vol. 22, N.º 1 (2016), pp. 149-167
1431-9276
10.1017/S1431927615015512
dc.rights.driver.fl_str_mv metadata only access
info:eu-repo/semantics/openAccess
rights_invalid_str_mv metadata only access
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Microscopy Society of America
publisher.none.fl_str_mv Microscopy Society of America
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
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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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