Impact of Rejuvenator-Modified Mastic on Asphalt Mixture Stiffness

Detalhes bibliográficos
Autor(a) principal: Câmara, Gustavo
Data de Publicação: 2023
Outros Autores: Azevedo, Nuno Monteiro, Micaelo, Rui
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10362/162428
Resumo: Publisher Copyright: © 2023 by the authors.
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spelling Impact of Rejuvenator-Modified Mastic on Asphalt Mixture StiffnessMeso-Scale Discrete Element Method Approachasphalt mixturecapsulesdiscrete element modelingencapsulated rejuvenatorrejuvenator-modified masticself-healingArchitectureCivil and Structural EngineeringBuilding and ConstructionPublisher Copyright: © 2023 by the authors.Encapsulated rejuvenators embedded in asphalt mixtures are a promising technology to extend the service life of asphalt pavements. However, their effects on the asphalt mixture’s performance still need to be properly understood. A recently developed three-dimensional discrete element method framework enables the evaluation of non-homogeneous distributions of the rejuvenator, closely resembling real conditions. This includes different scenarios involving capsule content and release efficiency. The presented numerical results show that the rejuvenator-to-mastic ratio and the number of rejuvenator-modified contacts influence the stiffness properties of asphalt mixtures. In cases where a homogeneous rejuvenator distribution is assumed, the three-dimensional DEM model predicts a significant reduction in the asphalt mixture’s stiffness that compromises the pavement’s performance. Simulations show that the diffusion effect needs to be considered for predicting the post-healed behavior of asphalt mixtures. For cases considering more suitable modified mastic amounts (less than 1.20 wt%), the effect on the asphalt mixture’s stiffness modulus is less pronounced, and the phase angle is not significantly affected. Additionally, the presented simulations suggest that the capsule content can be increased up to 0.75 wt%, and capsules with a release rate higher than 48% can be used without compromising the rheological performance of asphalt mixtures, possibly improving their self-healing properties. These numerical insights should be considered in future designs to achieve optimal post-healed behavior.DEC - Departamento de Engenharia CivilCERIS - Polo NOVARUNCâmara, GustavoAzevedo, Nuno MonteiroMicaelo, Rui2024-01-17T22:37:55Z2023-12-052023-12-05T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article22application/pdfhttp://hdl.handle.net/10362/162428eng2075-5309PURE: 81715407https://doi.org/10.3390/buildings13123023info: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:RCAAP2024-03-11T05:45:21Zoai:run.unl.pt:10362/162428Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:58:54.392547Repositório 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 Impact of Rejuvenator-Modified Mastic on Asphalt Mixture Stiffness
Meso-Scale Discrete Element Method Approach
title Impact of Rejuvenator-Modified Mastic on Asphalt Mixture Stiffness
spellingShingle Impact of Rejuvenator-Modified Mastic on Asphalt Mixture Stiffness
Câmara, Gustavo
asphalt mixture
capsules
discrete element modeling
encapsulated rejuvenator
rejuvenator-modified mastic
self-healing
Architecture
Civil and Structural Engineering
Building and Construction
title_short Impact of Rejuvenator-Modified Mastic on Asphalt Mixture Stiffness
title_full Impact of Rejuvenator-Modified Mastic on Asphalt Mixture Stiffness
title_fullStr Impact of Rejuvenator-Modified Mastic on Asphalt Mixture Stiffness
title_full_unstemmed Impact of Rejuvenator-Modified Mastic on Asphalt Mixture Stiffness
title_sort Impact of Rejuvenator-Modified Mastic on Asphalt Mixture Stiffness
author Câmara, Gustavo
author_facet Câmara, Gustavo
Azevedo, Nuno Monteiro
Micaelo, Rui
author_role author
author2 Azevedo, Nuno Monteiro
Micaelo, Rui
author2_role author
author
dc.contributor.none.fl_str_mv DEC - Departamento de Engenharia Civil
CERIS - Polo NOVA
RUN
dc.contributor.author.fl_str_mv Câmara, Gustavo
Azevedo, Nuno Monteiro
Micaelo, Rui
dc.subject.por.fl_str_mv asphalt mixture
capsules
discrete element modeling
encapsulated rejuvenator
rejuvenator-modified mastic
self-healing
Architecture
Civil and Structural Engineering
Building and Construction
topic asphalt mixture
capsules
discrete element modeling
encapsulated rejuvenator
rejuvenator-modified mastic
self-healing
Architecture
Civil and Structural Engineering
Building and Construction
description Publisher Copyright: © 2023 by the authors.
publishDate 2023
dc.date.none.fl_str_mv 2023-12-05
2023-12-05T00:00:00Z
2024-01-17T22:37:55Z
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/10362/162428
url http://hdl.handle.net/10362/162428
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 2075-5309
PURE: 81715407
https://doi.org/10.3390/buildings13123023
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 22
application/pdf
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
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
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