NIT: Recent submissions

Now showing items 1-20 of 220

Performance of unbound granular mixtures with reclaimed asphalt pavement

Neves, J.; Paixão, A.; Freire, A. C. (Emerald Publishing, 2026-01)

This study investigates the mechanical performance of unbound granular mixtures composed of reclaimed asphalt pavement (RAP) and natural aggregates (NA), referred to as NA + RAP mixtures. The aim is to support sustainable ...
Avaliação e caracterização do desempenho da infraestrutura ferroviária recorrendo a dispositivos móveis, inteligentes e de baixo custo

Paixão, A.; Fortunato, E. (Engenho e Média, Lda, 2024-07)

Os dispositivos móveis inteligentes, como smartphones e tablets, têm revolucionado as nossas vidas e apresentam um elevado potencial de aplicação na monitorização de infraes- truturas civis, incluindo ferrovias. Tais ...
Caracterização laboratorial e modelação numérica de misturas de escórias de aciaria com borracha para camadas de apoio de infraestruturas de transporte

Rios, S.; Alves, R.; Fonseca, A.; Paixão, A.; Fortunato, E.; Varandas, J. (Sociedade Portuguesa de Geotecnia, 2026-05-11)

A construção de infraestruturas de transporte mais sustentáveis requer a utilização de materiais que combinem eficiência técnica e viabilidade económica e ambiental. Este estudo, desenvolvido no âmbito do projeto de ...
Long-term deformation prediction of a tropical railway sub-ballast soil in heavy-haul tracks using a high-cycle accumulation model

Castro, G.; Motta, R.; Paixão, A.; Moura, E.; Fortunato, E.; Bernucci, L. (Elsevier, 2026-04)

The increase in axle loads in heavy-haul railways demands sub-ballast materials capable of maintaining long-term performance under severe cyclic loading, particularly in tropical environments. This study addresses the ...
Effect of the geometrical and physical nature of filler on the rheological properties of mastics

Antunes, Vítor; Freire, A. C.; Sheidaei, M.; Östlund, J. (Taylor & Francis, 2025-11-11)

This study investigates properties of mastics produced with 70/100 neat bitumen, three mineral fillers (granite, quartz-granite, and diorite), and a lime-based active filler at filler- to-bitumen (F/B) ratios of 40%, 50%, ...
Potential Use of Brewer’s Spent Grain By-Product as a Component for Sustainable Thermal Mortars

Manso, M.; Silva, J.; Antunes, Vítor; Ivo, I.; Canto, J.; Guerra, C. (MDPI, 2025)

Buildings represent approximately 40% of the total energy consumption. Net-zero energy buildings (NZEBs) have lower energy demands than conventional buildings due to improved thermal insulation combined with other passive ...
Self-Healing Asphalt Mixtures Meso-Modelling: Impact of Capsule Content on Stiffness and Tensile Strength

Câmara, G.; Azevedo, N.; Micaelo, R. (MDPI, 2025)

Capsule-based self-healing technologies offer a promising solution to extend pavement service life without requiring external activation. The effect of the capsule content on the mechanical behaviour of self-healing asphalt ...
Modelling the influence of capsules on the behaviour of asphalt mixtures

Câmara, G.; Micaelo, R.; Azevedo, N. (International Centre for Numerical Methods in Engineering (CIMNE), 2025)

Over the years, different methodologies, such as encapsulated rejuvenators, have been investigated to extend the service life of roads. However, these elements may impact the mechanical performance of asphalt mixtures, and ...
Viabilidade da multi-reciclagem de camadas de desgaste betuminosas através da utilização de diferentes rejuvenescedores

Antunes, Vítor; Freire, A. C.; Neves, J.; Campos, V. (CRP, 2025-05-13)

Anualmente, as administrações rodoviárias alocam elevados orçamentos para a manutenção de pavimentos, resultando numa elevada produção de resíduos e consumo de recursos naturais. A reciclagem de misturas betuminosas ...
Efeito das características geométricas e físicas do fíler no comportamento reológico dos mastiques betuminosos

Maya, S.; Antunes, Vítor; Freire, A. C. (CRP, 2025-05-13)
Temperature influence on mechanical behavior of a road pavement RAR test section

Freire, A. C.; Antunes, Vítor; Batista, F. A. (Asphalt Rubber<>Rubberized Asphalt Conference, 2025-10-14)

The major function of the road pavements is to offer a proper surface that supports traffic loads, under suitable and safe conditions, during its service life. The pavement structure must be designed to ensure that, through ...
Evaluation of Sustainable Pavement Construction and Maintenance Using Multi-Recycled RAP Mixtures

Antunes, Vítor; Freire, A. C.; Neves, J. (Asphalt Rubber<>Rubberized Asphalt Conference, 2025-10-14)

The growing demand for sustainable solutions has led to an increasing number of stakeholders committed to integrating sustainability principles into pavement management. To assess the environmental impact of various ...
Incorporação de plásticos não recicláveis em misturas betuminosas

Fonseca, J.; Antunes, Vítor; Freire, A. C. (CRP, 2025-05-13)

Nos últimos 50 anos, a produção mundial de plástico aumentou exponencialmente. Cerca de 40% deste plástico é utilizado em embalagens descartáveis e 20% na construção. Apesar das grandes quantidades produzidas, apenas 6% ...
Abordagem não invasiva para detetar subsidências em pavimentos: InSar, FWD e GPR

Marecos, V. (CPGT, 2025-11-24)

A combinação InSAR + GPR + FWD é eficiente para diagnosticar subsidências. O InSAR é ideal para avaliação em nível de rede, orientando onde aplicar o GPR e o FWD. Esta abordagem permite otimizar a localização de ensaios ...
Contributions to Incorporation of Non-Recyclable Plastics in Bituminous Mixtures

Fonseca, J.; Antunes, Vítor; Freire, A. C. (MDPI, 2024-11-14)

Over the past 50 years, global plastic production has surged exponentially. Around 40% of this plastic is used for packaging, most of which is single-use, while 20% is used in construction. Despite the vast quantities ...
Laboratory investigation and modelling of alternative materials for sub-ballast and formation rehabilitation in a heavy haul railway line

Castro, G.; Quispe, J.; Motta, R.; Moura, E.; Costa, R.; Bernucci, L.; Paixão, A.; Fortunato, E. (Elsevier, 2026-01)

The sub-ballast layer plays a key role in railway track performance, especially under heavy haul conditions such those of the Carajás Railway (EFC) – Brazil, where axle loads are expected to increase to 40 t/axle – a level ...
Ballasted Railway Track–Bridge Transition Zone Monitoring Methods: Recent Developments, Challenges, and Prospects

Siahkouhi, M.; Rashidi, M.; Miri, A.; Ghiasi, A.; Paixão, A. (ASCE - American Society of Civil Engineers, 2025-05)

Many researchers have studied the dynamic response of ballasted railway track–bridge transition zones (RTBTZs) using different instrumentation systems. The primary factor contributing to the frequent abnormal dynamic ...
Dynamic response of ballasted High-Speed Railways: insights from experimental measurements and 3D nonlinear numerical modelling

Varandas, J.; Paixão, A.; Tijera, Á.; Crespo-Chacón, I.; Estaire, J.; Fortunato, E. (Elsevier, 2025-03)

High-Speed Railways provide efficient transportation but impose significant dynamic forces on ballasted tracks, accelerating ballast degradation and increasing maintenance demands. This study aims to understand and mitigate ...
Estudos experimentais sobre a avaliação do potencial da escória de aço como material alternativo para balastro ferroviário

Paixão, A.; Fortunato, E.; Delgado, B.; Fonseca, A. (CRP - Centro Rodoviário Português, 2025-05-13)

Alguns subprodutos industriais, como a escória de forno de arco elétrico (EAF), têm ganhado relevância como alternativa sustentável aos agregados britados naturais, na utilização em balastro ferroviário. Este trabalho ...
Efficient pavement crack monitoring for road life cycle management

Pena, R.; Marques, N.; Batista, F. A.; Manso, J.; Marcelino, J. (Transport Research Arena TRA2024, 2024-04)

Road pavements are vital for transportation infrastructure, yet they deteriorate over time due to traffic loads and environmental factors, resulting in cracks and damage. This paper introduces an innovative method for crack ...

Now showing items 1-20 of 220

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