Durability evaluation of self-compacting concrete with recycled aggregates from the precast industry
Autor(a) principal: | |
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Data de Publicação: | 2019 |
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/10400.21/11234 |
Resumo: | This paper describes an experimental campaign developed with the aim of evaluating the influence of the incorporation of fine and coarse recycled aggregates (FRA and CRA, respectively) on the durability properties of selfcompacting concrete (SCC). The main objective is to provide the precast industry with an alternative way of disposal and recovery of self-generated waste, minimising the consumption of natural resources and, consequently, significantly reducing the environmental impact associated with the manufacture of concrete. For this purpose, two families of concrete were produced, distinct in terms of the compressive strength of the source concrete of the recycled aggregates (45 MPa and 65 MPa), with FRA/CRA incorporation ratios of 0/0%, 25/25%, 50/50%, 0/100% and 100/0%. To evaluate the durability of the concretes, tests for water absorption, capillary absorption, oxygen permeability, electrical resistivity, chloride penetration and carbonation resistance were performed in the hardened state. The results revealed that the concrete mixes with recycled aggregate incorporated showed worse performance than the reference mixes. However, taking all the studied properties into account, it is possible to conclude that recycled aggregates from the precast concrete industry are of very good quality and can be incorporated in the production of SCC with ratios of 25/25% and 0/100% as recommended limits. |
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Durability evaluation of self-compacting concrete with recycled aggregates from the precast industryAggregatesDurability-related propertiesSustainabilityThis paper describes an experimental campaign developed with the aim of evaluating the influence of the incorporation of fine and coarse recycled aggregates (FRA and CRA, respectively) on the durability properties of selfcompacting concrete (SCC). The main objective is to provide the precast industry with an alternative way of disposal and recovery of self-generated waste, minimising the consumption of natural resources and, consequently, significantly reducing the environmental impact associated with the manufacture of concrete. For this purpose, two families of concrete were produced, distinct in terms of the compressive strength of the source concrete of the recycled aggregates (45 MPa and 65 MPa), with FRA/CRA incorporation ratios of 0/0%, 25/25%, 50/50%, 0/100% and 100/0%. To evaluate the durability of the concretes, tests for water absorption, capillary absorption, oxygen permeability, electrical resistivity, chloride penetration and carbonation resistance were performed in the hardened state. The results revealed that the concrete mixes with recycled aggregate incorporated showed worse performance than the reference mixes. However, taking all the studied properties into account, it is possible to conclude that recycled aggregates from the precast concrete industry are of very good quality and can be incorporated in the production of SCC with ratios of 25/25% and 0/100% as recommended limits.ICE PublishingRCIPLSantos, Sara AlmeidaRaposeiro Da Silva, PedroDe Brito, Jorge2020-03-12T10:14:20Z2019-122019-12-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.21/11234engSANTOS, Sara Almeida; SILVA, Pedro Raposeiro da; BRITO, Jorge de – Durability evaluation of self-compacting concrete with recycled aggregates from the precast industry. Magazine of Concrete Research. ISSN 0024-9831. Vol. 71, N.º 24 (2019), pp. 1265-12820024-9831https://doi.org/10.1680/jmacr.18.00225info: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:RCAAP2023-08-03T10:02:15Zoai:repositorio.ipl.pt:10400.21/11234Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:19:31.447935Repositório 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 |
Durability evaluation of self-compacting concrete with recycled aggregates from the precast industry |
title |
Durability evaluation of self-compacting concrete with recycled aggregates from the precast industry |
spellingShingle |
Durability evaluation of self-compacting concrete with recycled aggregates from the precast industry Santos, Sara Almeida Aggregates Durability-related properties Sustainability |
title_short |
Durability evaluation of self-compacting concrete with recycled aggregates from the precast industry |
title_full |
Durability evaluation of self-compacting concrete with recycled aggregates from the precast industry |
title_fullStr |
Durability evaluation of self-compacting concrete with recycled aggregates from the precast industry |
title_full_unstemmed |
Durability evaluation of self-compacting concrete with recycled aggregates from the precast industry |
title_sort |
Durability evaluation of self-compacting concrete with recycled aggregates from the precast industry |
author |
Santos, Sara Almeida |
author_facet |
Santos, Sara Almeida 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 Almeida Raposeiro Da Silva, Pedro De Brito, Jorge |
dc.subject.por.fl_str_mv |
Aggregates Durability-related properties Sustainability |
topic |
Aggregates Durability-related properties Sustainability |
description |
This paper describes an experimental campaign developed with the aim of evaluating the influence of the incorporation of fine and coarse recycled aggregates (FRA and CRA, respectively) on the durability properties of selfcompacting concrete (SCC). The main objective is to provide the precast industry with an alternative way of disposal and recovery of self-generated waste, minimising the consumption of natural resources and, consequently, significantly reducing the environmental impact associated with the manufacture of concrete. For this purpose, two families of concrete were produced, distinct in terms of the compressive strength of the source concrete of the recycled aggregates (45 MPa and 65 MPa), with FRA/CRA incorporation ratios of 0/0%, 25/25%, 50/50%, 0/100% and 100/0%. To evaluate the durability of the concretes, tests for water absorption, capillary absorption, oxygen permeability, electrical resistivity, chloride penetration and carbonation resistance were performed in the hardened state. The results revealed that the concrete mixes with recycled aggregate incorporated showed worse performance than the reference mixes. However, taking all the studied properties into account, it is possible to conclude that recycled aggregates from the precast concrete industry are of very good quality and can be incorporated in the production of SCC with ratios of 25/25% and 0/100% as recommended limits. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-12 2019-12-01T00:00:00Z 2020-03-12T10:14:20Z |
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/10400.21/11234 |
url |
http://hdl.handle.net/10400.21/11234 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
SANTOS, Sara Almeida; SILVA, Pedro Raposeiro da; BRITO, Jorge de – Durability evaluation of self-compacting concrete with recycled aggregates from the precast industry. Magazine of Concrete Research. ISSN 0024-9831. Vol. 71, N.º 24 (2019), pp. 1265-1282 0024-9831 https://doi.org/10.1680/jmacr.18.00225 |
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 |
ICE Publishing |
publisher.none.fl_str_mv |
ICE Publishing |
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 |
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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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1799133462221815808 |