Spent equilibrium catalyst as internal curing agent in UHPFRC
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: | https://hdl.handle.net/1822/62983 |
Resumo: | The main goal of the current paper is to optimize ultra-high performance cementitious material (UHPC) mixes incorporating the spent equilibrium catalyst (ECat) to mitigate autogenous shrinkage. Design of experiments approach was used to optimize mixtures targeting different engineering properties, namely, self-compactibility, low early-age shrinkage and cracking risk, improved durability and high mechanical performance. The statistical models established indicated that ECat exhibits a strong positive effect on the autogenous shrinkage mitigation of UHPC attributed to the water absorbed in the porous of ECat particles. The proposed optimal UHPC mixture represents the best compromise between low autogenous shrinkage ? 32% of reduction ? and high resistivity at 28 days without impairing self-compatibility and compressive strength. This optimal UHPC combined with 3% high-strength steel fibres (lf/df=65) proved to be comparable to other Ultra High-Performance Fibre Reinforced Composites (UHPFRC), in terms of mechanical behaviour, and more eco-friendly and cost-efficient than UHPCs reported in the literature. |
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Spent equilibrium catalyst as internal curing agent in UHPFRCAutogenous shrinkageDurabilitySpent equilibrium catalyst (ECat)Statistical factorial designSustainabilityUltra-high performance fibre reinforced cementitious composites (UHPFRC)Engenharia e Tecnologia::Engenharia CivilScience & TechnologyThe main goal of the current paper is to optimize ultra-high performance cementitious material (UHPC) mixes incorporating the spent equilibrium catalyst (ECat) to mitigate autogenous shrinkage. Design of experiments approach was used to optimize mixtures targeting different engineering properties, namely, self-compactibility, low early-age shrinkage and cracking risk, improved durability and high mechanical performance. The statistical models established indicated that ECat exhibits a strong positive effect on the autogenous shrinkage mitigation of UHPC attributed to the water absorbed in the porous of ECat particles. The proposed optimal UHPC mixture represents the best compromise between low autogenous shrinkage ? 32% of reduction ? and high resistivity at 28 days without impairing self-compatibility and compressive strength. This optimal UHPC combined with 3% high-strength steel fibres (lf/df=65) proved to be comparable to other Ultra High-Performance Fibre Reinforced Composites (UHPFRC), in terms of mechanical behaviour, and more eco-friendly and cost-efficient than UHPCs reported in the literature.UID/ECI/04708/2019- CONSTRUCT - Instituto de I&D em Estruturas e Construções funded by national funds through the FCT/MCTES (PIDDAC); by the project POCI-01-0145-FEDER-031777 – “UHPGRADE - Next generation of ultra-high performance fibre-reinforced cement based composites for rehabilitation and strengthening of the existing infrastructure” funded by FEDER funds through COMPETE2020 - Programa Operacional Competitividade e Internacionalização (POCI) and by national funds (PIDDAC) through FCT/MCTES; and by FCT - Fundação para a Ciência e a Tecnologia through the PhD scholarship PD/BD/113636/2015, attributed within the Doctoral Program in Eco-Efficient Construction and Rehabilitation (EcoCoRe). Collaboration and materials supply by Sines Refinery/Galp Energia, Secil, Omya Comital, Sika, Bekaert and EUROMODAL is gratefully acknowledged. This study builds upon research developed in ECO-Zement R&D + i project which was awarded with the Jerónimo Martins/Green Project Awards 2017ElsevierUniversidade do MinhoMatos, Ana MafaldaNunes, SandraCosta, CarlaAguiar, J. L. Barroso de2019-112019-11-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/62983engMatos A. M., Nunes S., Costa C., Aguiar J. B. Spent equilibrium catalyst as internal curing agent in UHPFRC, Cement and Concrete Composites, Vol. 104, doi:10.1016/j.cemconcomp.2019.103362, 20190958-94651873-393X10.1016/j.cemconcomp.2019.103362https://www.sciencedirect.com/science/article/pii/S0958946518313568info: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:RCAAP2023-10-07T01:22:00Zoai:repositorium.sdum.uminho.pt:1822/62983Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:34:11.339802Repositório 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 |
Spent equilibrium catalyst as internal curing agent in UHPFRC |
title |
Spent equilibrium catalyst as internal curing agent in UHPFRC |
spellingShingle |
Spent equilibrium catalyst as internal curing agent in UHPFRC Matos, Ana Mafalda Autogenous shrinkage Durability Spent equilibrium catalyst (ECat) Statistical factorial design Sustainability Ultra-high performance fibre reinforced cementitious composites (UHPFRC) Engenharia e Tecnologia::Engenharia Civil Science & Technology |
title_short |
Spent equilibrium catalyst as internal curing agent in UHPFRC |
title_full |
Spent equilibrium catalyst as internal curing agent in UHPFRC |
title_fullStr |
Spent equilibrium catalyst as internal curing agent in UHPFRC |
title_full_unstemmed |
Spent equilibrium catalyst as internal curing agent in UHPFRC |
title_sort |
Spent equilibrium catalyst as internal curing agent in UHPFRC |
author |
Matos, Ana Mafalda |
author_facet |
Matos, Ana Mafalda Nunes, Sandra Costa, Carla Aguiar, J. L. Barroso de |
author_role |
author |
author2 |
Nunes, Sandra Costa, Carla Aguiar, J. L. Barroso de |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Matos, Ana Mafalda Nunes, Sandra Costa, Carla Aguiar, J. L. Barroso de |
dc.subject.por.fl_str_mv |
Autogenous shrinkage Durability Spent equilibrium catalyst (ECat) Statistical factorial design Sustainability Ultra-high performance fibre reinforced cementitious composites (UHPFRC) Engenharia e Tecnologia::Engenharia Civil Science & Technology |
topic |
Autogenous shrinkage Durability Spent equilibrium catalyst (ECat) Statistical factorial design Sustainability Ultra-high performance fibre reinforced cementitious composites (UHPFRC) Engenharia e Tecnologia::Engenharia Civil Science & Technology |
description |
The main goal of the current paper is to optimize ultra-high performance cementitious material (UHPC) mixes incorporating the spent equilibrium catalyst (ECat) to mitigate autogenous shrinkage. Design of experiments approach was used to optimize mixtures targeting different engineering properties, namely, self-compactibility, low early-age shrinkage and cracking risk, improved durability and high mechanical performance. The statistical models established indicated that ECat exhibits a strong positive effect on the autogenous shrinkage mitigation of UHPC attributed to the water absorbed in the porous of ECat particles. The proposed optimal UHPC mixture represents the best compromise between low autogenous shrinkage ? 32% of reduction ? and high resistivity at 28 days without impairing self-compatibility and compressive strength. This optimal UHPC combined with 3% high-strength steel fibres (lf/df=65) proved to be comparable to other Ultra High-Performance Fibre Reinforced Composites (UHPFRC), in terms of mechanical behaviour, and more eco-friendly and cost-efficient than UHPCs reported in the literature. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-11 2019-11-01T00:00:00Z |
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 |
https://hdl.handle.net/1822/62983 |
url |
https://hdl.handle.net/1822/62983 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Matos A. M., Nunes S., Costa C., Aguiar J. B. Spent equilibrium catalyst as internal curing agent in UHPFRC, Cement and Concrete Composites, Vol. 104, doi:10.1016/j.cemconcomp.2019.103362, 2019 0958-9465 1873-393X 10.1016/j.cemconcomp.2019.103362 https://www.sciencedirect.com/science/article/pii/S0958946518313568 |
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 |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799132861828169728 |