Mechanical performance evaluation of self-compacting concrete with fine and coarse recycled aggregates from the precast industry

Detalhes bibliográficos
Autor(a) principal: Santos, Sara A.
Data de Publicação: 2017
Outros Autores: Raposeiro Da Silva, Pedro, De Brito, Jorge
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.21/8150
Resumo: This paper intends to evaluate the feasibility of reintroducing recycled concrete aggregates in the precast industry. The mechanical properties of self-compacting concrete (SCC) with incorporation of recycled aggregates (RA) (coarse recycled aggregates (CRA) and fine recycled aggregates (FRA)) from crushed precast elements were evaluated. The goal was to evaluate the ability of producing SCC with a minimum pre-established performance in terms of mechanical strength, incorporating variable ratios of RA (FRA/CRA%: 0/0%, 25/25%, 50/50%, 0/100% and 100/0%) produced from precast source concretes with similar target performances. This replication in SCC was made for two strength classes (45 MPa and 65 MPa), with the intention of obtaining as final result concrete with recycled aggregates whose characteristics are compatible with those of a SCC with natural aggregates in terms of workability and mechanical strength. The results enabled conclusions to be established regarding the SCC’s produced with fine and coarse recycled aggregates from the precast industry, based on its mechanical properties. The properties studied are strongly affected by the type and content of recycled aggregates. The potential demonstrated, mainly in the hardened state, by the joint use of fine and coarse recycled aggregate is emphasized.
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spelling Mechanical performance evaluation of self-compacting concrete with fine and coarse recycled aggregates from the precast industrySelf-compacting concreteCoarse and fine recycled aggregates from the precast industryFresh propertiesMechanical propertiesThis paper intends to evaluate the feasibility of reintroducing recycled concrete aggregates in the precast industry. The mechanical properties of self-compacting concrete (SCC) with incorporation of recycled aggregates (RA) (coarse recycled aggregates (CRA) and fine recycled aggregates (FRA)) from crushed precast elements were evaluated. The goal was to evaluate the ability of producing SCC with a minimum pre-established performance in terms of mechanical strength, incorporating variable ratios of RA (FRA/CRA%: 0/0%, 25/25%, 50/50%, 0/100% and 100/0%) produced from precast source concretes with similar target performances. This replication in SCC was made for two strength classes (45 MPa and 65 MPa), with the intention of obtaining as final result concrete with recycled aggregates whose characteristics are compatible with those of a SCC with natural aggregates in terms of workability and mechanical strength. The results enabled conclusions to be established regarding the SCC’s produced with fine and coarse recycled aggregates from the precast industry, based on its mechanical properties. The properties studied are strongly affected by the type and content of recycled aggregates. The potential demonstrated, mainly in the hardened state, by the joint use of fine and coarse recycled aggregate is emphasized.MDPIRCIPLSantos, Sara A.Raposeiro Da Silva, PedroDe Brito, Jorge2018-02-28T09:19:46Z2017-082017-08-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.21/8150engSANTOS, Sara A.; SILVA, Pedro R. da; BRITO, Jorge de – Mechanical performance evaluation of self-compacting concrete with fine and coarse recycled aggregates from the precast industry. Materials. ISSN 1996-1944. Vol. 10, N.º 8, (2017), pp. 1-151996-194410.3390/ma10080904metadata 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:RCAAP2023-08-03T09:55:09Zoai:repositorio.ipl.pt:10400.21/8150Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:16:57.823306Repositório 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 Mechanical performance evaluation of self-compacting concrete with fine and coarse recycled aggregates from the precast industry
title Mechanical performance evaluation of self-compacting concrete with fine and coarse recycled aggregates from the precast industry
spellingShingle Mechanical performance evaluation of self-compacting concrete with fine and coarse recycled aggregates from the precast industry
Santos, Sara A.
Self-compacting concrete
Coarse and fine recycled aggregates from the precast industry
Fresh properties
Mechanical properties
title_short Mechanical performance evaluation of self-compacting concrete with fine and coarse recycled aggregates from the precast industry
title_full Mechanical performance evaluation of self-compacting concrete with fine and coarse recycled aggregates from the precast industry
title_fullStr Mechanical performance evaluation of self-compacting concrete with fine and coarse recycled aggregates from the precast industry
title_full_unstemmed Mechanical performance evaluation of self-compacting concrete with fine and coarse recycled aggregates from the precast industry
title_sort Mechanical performance evaluation of self-compacting concrete with fine and coarse recycled aggregates from the precast industry
author Santos, Sara A.
author_facet Santos, Sara A.
Raposeiro Da Silva, Pedro
De Brito, Jorge
author_role author
author2 Raposeiro Da Silva, Pedro
De Brito, Jorge
author2_role author
author
dc.contributor.none.fl_str_mv RCIPL
dc.contributor.author.fl_str_mv Santos, Sara A.
Raposeiro Da Silva, Pedro
De Brito, Jorge
dc.subject.por.fl_str_mv Self-compacting concrete
Coarse and fine recycled aggregates from the precast industry
Fresh properties
Mechanical properties
topic Self-compacting concrete
Coarse and fine recycled aggregates from the precast industry
Fresh properties
Mechanical properties
description This paper intends to evaluate the feasibility of reintroducing recycled concrete aggregates in the precast industry. The mechanical properties of self-compacting concrete (SCC) with incorporation of recycled aggregates (RA) (coarse recycled aggregates (CRA) and fine recycled aggregates (FRA)) from crushed precast elements were evaluated. The goal was to evaluate the ability of producing SCC with a minimum pre-established performance in terms of mechanical strength, incorporating variable ratios of RA (FRA/CRA%: 0/0%, 25/25%, 50/50%, 0/100% and 100/0%) produced from precast source concretes with similar target performances. This replication in SCC was made for two strength classes (45 MPa and 65 MPa), with the intention of obtaining as final result concrete with recycled aggregates whose characteristics are compatible with those of a SCC with natural aggregates in terms of workability and mechanical strength. The results enabled conclusions to be established regarding the SCC’s produced with fine and coarse recycled aggregates from the precast industry, based on its mechanical properties. The properties studied are strongly affected by the type and content of recycled aggregates. The potential demonstrated, mainly in the hardened state, by the joint use of fine and coarse recycled aggregate is emphasized.
publishDate 2017
dc.date.none.fl_str_mv 2017-08
2017-08-01T00:00:00Z
2018-02-28T09:19:46Z
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/10400.21/8150
url http://hdl.handle.net/10400.21/8150
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv SANTOS, Sara A.; SILVA, Pedro R. da; BRITO, Jorge de – Mechanical performance evaluation of self-compacting concrete with fine and coarse recycled aggregates from the precast industry. Materials. ISSN 1996-1944. Vol. 10, N.º 8, (2017), pp. 1-15
1996-1944
10.3390/ma10080904
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dc.publisher.none.fl_str_mv MDPI
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dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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