Mortars with cdw recycled aggregates submitted to high levels of co2

Detalhes bibliográficos
Autor(a) principal: Gomes, Ricardo Infante
Data de Publicação: 2021
Outros Autores: Bastos, David, Farinha, Catarina Brazão, Pederneiras, Cinthia Maia, Veiga, Rosário, de Brito, Jorge, Faria, Paulina, Silva, António Santos
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Texto Completo: http://hdl.handle.net/10362/128613
Resumo: t WP10B by c5Lab (CoLab 4/2018-CemLab).
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spelling Mortars with cdw recycled aggregates submitted to high levels of co2Carbon capture and storageCementConstruction and demolition wasteRecycled aggregateRendering mortarSustainable mortarCivil and Structural EngineeringBuilding and ConstructionMaterials Science(all)Geotechnical Engineering and Engineering GeologyComputer Science Applicationst WP10B by c5Lab (CoLab 4/2018-CemLab).Construction and demolition wastes (CDW) are generated at a large scale and have a diversified potential in the construction sector. The replacement of natural aggregates (NA) with CDW recycled aggregates (RA) in construction materials, such as mortars, has several environmental benefits, such as the reduction in the natural resources used in these products and simultaneous prevention of waste landfill. Complementarily, CDW have the potential to capture CO2 since some of their components may carbonate, which also contributes to a decrease in global warming potential. The main objective of this research is to evaluate the influence of the exposure of CDW RA to CO2 produced in cement factories and its effect on mortars. Several mortars were developed with a volumetric ratio of 1:4 (cement: aggregate), with NA (reference mortar), CDW RA and CDW RA exposed to high levels of CO2 (CRA). The two types of waste aggregate were incorporated, replacing NA at 50% and 100% (in volume). The mortars with NA and non-carbonated RA and CRA from CDW were analysed, accounting for their performance in the fresh and hardened states in terms of workability, mechanical behaviour and water absorption by capillarity. It was concluded that mortars with CDW (both CRA and non-carbonated RA) generally present a good performance for non-structural purposes, although they suffer a moderate decrease in mechanical performance when NA is replaced with RA. Additionally, small improvements were found in the performance of the aggregates and mortars with CRA subjected to a CO2 curing for a short period (5 h), while a long carbonation period (5 d) led to a decrease in performance, contrary to the results obtained in the literature that indicate a significant increase in such characteristics. This difference could be because the literature focused on made-in-laboratory CDW aggregates, while, in this research, the wastes came from real demolition activities, and were thus older and more heterogeneous.DEC - Departamento de Engenharia CivilRUNGomes, Ricardo InfanteBastos, DavidFarinha, Catarina BrazãoPederneiras, Cinthia MaiaVeiga, Rosáriode Brito, JorgeFaria, PaulinaSilva, António Santos2021-12-02T23:47:47Z2021-11-052021-11-05T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10362/128613eng2412-3811PURE: 35142803https://doi.org/10.3390/infrastructures6110159info:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2024-05-22T17:57:24Zoai:run.unl.pt:10362/128613Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-28T17:28:20.486494Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv Mortars with cdw recycled aggregates submitted to high levels of co2
title Mortars with cdw recycled aggregates submitted to high levels of co2
spellingShingle Mortars with cdw recycled aggregates submitted to high levels of co2
Gomes, Ricardo Infante
Carbon capture and storage
Cement
Construction and demolition waste
Recycled aggregate
Rendering mortar
Sustainable mortar
Civil and Structural Engineering
Building and Construction
Materials Science(all)
Geotechnical Engineering and Engineering Geology
Computer Science Applications
title_short Mortars with cdw recycled aggregates submitted to high levels of co2
title_full Mortars with cdw recycled aggregates submitted to high levels of co2
title_fullStr Mortars with cdw recycled aggregates submitted to high levels of co2
title_full_unstemmed Mortars with cdw recycled aggregates submitted to high levels of co2
title_sort Mortars with cdw recycled aggregates submitted to high levels of co2
author Gomes, Ricardo Infante
author_facet Gomes, Ricardo Infante
Bastos, David
Farinha, Catarina Brazão
Pederneiras, Cinthia Maia
Veiga, Rosário
de Brito, Jorge
Faria, Paulina
Silva, António Santos
author_role author
author2 Bastos, David
Farinha, Catarina Brazão
Pederneiras, Cinthia Maia
Veiga, Rosário
de Brito, Jorge
Faria, Paulina
Silva, António Santos
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv DEC - Departamento de Engenharia Civil
RUN
dc.contributor.author.fl_str_mv Gomes, Ricardo Infante
Bastos, David
Farinha, Catarina Brazão
Pederneiras, Cinthia Maia
Veiga, Rosário
de Brito, Jorge
Faria, Paulina
Silva, António Santos
dc.subject.por.fl_str_mv Carbon capture and storage
Cement
Construction and demolition waste
Recycled aggregate
Rendering mortar
Sustainable mortar
Civil and Structural Engineering
Building and Construction
Materials Science(all)
Geotechnical Engineering and Engineering Geology
Computer Science Applications
topic Carbon capture and storage
Cement
Construction and demolition waste
Recycled aggregate
Rendering mortar
Sustainable mortar
Civil and Structural Engineering
Building and Construction
Materials Science(all)
Geotechnical Engineering and Engineering Geology
Computer Science Applications
description t WP10B by c5Lab (CoLab 4/2018-CemLab).
publishDate 2021
dc.date.none.fl_str_mv 2021-12-02T23:47:47Z
2021-11-05
2021-11-05T00:00:00Z
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/10362/128613
url http://hdl.handle.net/10362/128613
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 2412-3811
PURE: 35142803
https://doi.org/10.3390/infrastructures6110159
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.source.none.fl_str_mv reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
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