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 ...
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 ...
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 ...
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 ...
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 ...
Batista, F. A.; Marecos, V.; Antunes, M. L.(2023-06)
Neste relatório, do projeto europeu MOVING TOGETHER, apresenta-se um plano geral para as atividades de demonstração e visitas técnicas a realizar no âmbito da Conferência internacional TRA2022, a ter lugar em Lisboa. Este ...
Paixão, A.; Fortunato, E.(Engenho e Média, Lda, 2024-07)
Os dispositivos móveis inteligentes, como smartphones e tablets, tem revolucionado as nossas vidas e apresentam um elevado potencial de aplicação na monitorização de infraestruturas civis, incluindo ferrovias. Tais ...
Neves, J.; Moutinho, S.; Freire, A. C.; Paixão, A.; Bernardo Monteiro; Parente, M.; Cristelo, N.; Gomes Correia, A.(Imprensa da Universidade de Coimbra, 2024-03-08)
O artigo apresenta uma compilação de exemplos nacionais de investigação, desenvolvimento e inovação relacionados com a transição verde e a transformação digital no âmbito da geotecnia nos transportes e associados às ...
The railway industry is seeking high-performance and sustainable solutions for sub-ballast materials, particularly in light of increasing cargo transport demands and climate events. The meticulous design and construction ...
The structural evaluation of heavy haul railroad tracks has always been sought by engineers and researchers to achieve better-performing structures to satisfy the constant need for higher transportation capacity.
Physical ...
The sustainable use of resources requires new strategies to transform industrial byproducts
into raw materials for other applications. This approach, inspired by circular economy funda-
mentals, can be successfully applied ...
The increasing demand for the development and expansion of transport infrastructures
requires alternative solutions that are economically and environmentally viable to provide
the necessary raw materials. Transport ...
Railway tracks consist of various components and experience different support conditions along the
longitudinal axis. The vertical stiffness of railway tracks varies significantly in space and time, and the
resilient ...
Railway infrastructure is essential for transportation worldwide, and ensuring its safe and efficient
operation is of utmost importance. The ballasted track system is still the most common railway
infrastructure type, ...
Morais, J.; Mendes, J.; Fortunato, E.; Calçada, R.(European Conference of Transport Research Institutes, 2023-05)
Assessing railway track support conditions is an important activity for railway managers around the world. In this context, an alternative and novel methodology to evaluate railway track support conditions is now under ...
As transições ferroviárias, como as entradas em pontes ou passagens inferiores, são locais onde frequentemente se desenvolvem defeitos de geometria de via, que podem colocar em risco a segurança da circulação ferroviária ...
O crescimento populacional mundial, atualizado recentemente para o valor de 8 mil milhões de pessoas e previsões de cerca de 10 mil milhões em 2055, surge como um dos principais desafios no que toca ao desenvolvimento de ...
Electric Arc Furnace steel slag aggregate has potential for wider application in transport infrastructures. However, the use of steel slag aggregate in the railway ballast layer, as an alternative to natural high quality ...
Slags and rubber from end-of-life tires represent a liability to the steel and tire industry, causing economic and environmental problems that are difficult to manage. Transport infrastructures can use these industrial ...
Muralha, J.; Paixão, A.; Resende, R.; Fortunato, E.(ISRM - International Society of Rock Mechanics, SPG - Paraguayan Geotechnical Society, 2022-10-18)
Photogrammetry-based methods using everyday, easily available photographic equipment and
free software have gained relevance for roughness measurement of rock joints. However, the
influence of some aspects, such as the ...