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Optimising energy use and environmental impacts in asphalt production: a life c...
Moura, Caroline Fernandes Nunes; Loureiro, Carlos Daniel Aleixo; Oliveira, Joel R. M.; Silva, Hugo M. R. D.This study provides a comprehensive evaluation of energy dynamics and environmental impacts in asphalt mixture production, addressing key factors that influence sustainability in the industry. The research focuses on assessing the effects of production temperature, aggregate moisture content, and using alternative materials, aiming to optimise operations and reduce environmental footprints. An expanded thermody...
Editorial of “Sustainability of Transport Infrastructures”
Oliveira, Joel R. M.; Silva, Hugo M. R. D.; Williams, R. Christopher; Dong, Zejiao[Excerpt] Sustainability in transport infrastructures has become a key priority for governments, industries, and researchers worldwide. Alongside their substantial environmental repercussions, efficient transportation systems contribute significantly to societies’ economic and social progress. Recent international goals, such as the United Nations Sustainable Development Goals [1], have underscored the need to ...
Traffic strain analysis provided by an FBG-based monitoring system
Rebelo, Francisco José Pereira; Oliveira, Joel R. M.; Silva, Hugo M. R. D.; Oliveira e Sá, JorgeIntegrating new technologies in civil engineering has gained more space, particularly in pavement engineering. By overcoming some gaps that older strategies present, such as purely visual inspection, and by transforming the roads into a structure connected to network managers that permanently transmits data, it is possible to get a better knowledge and understanding of how pavements evolve. This work presents t...
Rheological assessment of a polymer-modified bitumen with 30% recovered bitumen...
Dabiri, Asmasadat; Silva, Hugo M. R. D.; Oliveira, Joel R. M.; Almeida, FlávioPolymer-modified bitumen performs better at different temperatures and loading conditions than pure bitumen. Therefore, using this type of bitumen in recycled asphalt mixtures containing reclaimed asphalt (RA) material can lead to a better performance than pure bitumen. However, the presence of a very hard and aged binder in the RA, especially for high RA incorporation ratios, may increase bitumen stiffness and...
A life cycle assessment of an asphalt mixture with steel slag and reclaimed asp...
Moura, Caroline Fernandes Nunes; Silva, Hugo M. R. D.; Oliveira, Joel R. M.; Loureiro, Carlos Daniel AleixoIn the context of sustainable road construction, this study conducts a Life Cycle Assessment (LCA) to evaluate the environmental impact of an innovative asphalt mixture incorporating Steel Slag Aggregate (SSA) and Reclaimed Asphalt (RA), with a specific focus on the production phase. The research compares this innovative mixture with a conventional one utilizing Natural Aggregate (NA) and emphasizes the efficie...
Cold in-plant recycling with foamed bitumen for road rehabilitation: A case stu...
Castro, Francisco; Carvalho, João; Henriques, Gonçalo; Martins, Anabela; Santos, José; Salvador, Patrícia; Almeida, José; Silva, Hugo M. R. D.This article evaluates the viability of cold-in-plant recycling with foamed bitumen for road rehabilitation through a case study on the ER243 road in Portugal, highlighting its alignment with European circular economy principles. The primary objective is to assess environmental benefits, construction efficiency, and the quality of this innovative recycling method as a sustainable alternative to traditional pave...
Industrial-scale production and performance evaluation of asphalt mixtures with...
Loureiro, Carlos Daniel Aleixo; Moura, Caroline Fernandes Nunes; Silva, Hugo M. R. D.; Oliveira, Joel R. M.; Martinho, Fernando C. G.This study explores the industrial-scale production and application of asphalt mixtures incorporating high rates of recycled concrete aggregates (RCA), steel slag aggregates (SSA), and reclaimed asphalt (RA). With a dedicated focus on sustainability within road construction, the investigation scrutinizes two specific asphalt mixtures through a comprehensive field trial section. The findings reveal strict adhere...
Avaliação do ciclo de vida de pavimentos betuminosos fotocatalíticos pulverizad...
Margalho, Élida Melo; Gomes, Igor Samuel Peixoto; Rocha Segundo, Iran Gomes da; Castelo Branco, Verônica; Oliveira, Joel R. M.; Carneiro, Joaquim A. O.A poluição atmosférica é um problema que afeta os centros urbanos. Uma abordagem inovadora para mitigar este problema é a utilização de nanopartículas de dióxido de titânio (TiO2) em pavimentos betuminosos. A aplicação do TiO2 confere ao pavimento capacidades fotocatalíticas, permitindo a degradação de poluentes atmosféricos na presença de luz solar. O método de revestimento por pulverização é considerado o mai...
Mechanical and environmental performance of asphalt concrete with high amounts ...
Martinho, Fernando C. G.; Silva, Hugo M. R. D.; Oliveira, Joel R. M.; Moura, Caroline Fernandes Nunes; Loureiro, Carlos Daniel AleixoUsing aggregates from alternative sources has been considerably encouraged in recent decades. Reducing the consumption of natural aggregates from quarries (which have a substantial economic, visual, and environmental impact) is increasingly a concern. These needs have led to the broader use of more sustainable aggregates, increasing the incorporation percentages and extending their use to more demanding pavemen...
Material selection for efficient strain transfer in pavement monitoring using F...
Rebelo, Francisco José Pereira; Oliveira, Joel R. M.; Silva, Hugo M. R. D.; Oliveira e Sá, JorgeFibre Bragg Grating (FBG) sensors are increasingly used to monitor road pavement infrastructures due to their sensitivity and resilience. However, challenges such as mechanical vulnerability and effective strain and stress transfer remain critical. This study addresses these challenges by evaluating the effectiveness of four distinct filling materials (bitumen mastic, polymeric resin, polymeric sealant and flex...