216 documents found, page 1 of 22
Use of fibre-optic sensors in pavement condition monitoring
Rebelo, Francisco José Pereira; Silva, Hugo M. R. D.; Oliveira, Joel R. M.; Oliveira e Sá, Jorge; Pereira, Paulo A. A.Like any physical structure, roads require preservation, maintenance, and rehabilitation. Furthermore, the structural analysis of a road pavement is a significantly complex operation due to the variability of its subgrade characteristics and the traffic loads. Nowadays, the growing environmental concerns have directed scientific research to new fields, namely the development of techniques that increase the resi...
Preface [to Trends on construction in the Digital Era: proceedings of ISIC 2022]
Correia, A. Gomes; Azenha, Miguel; Cruz, Paulo J. S.; Novais, Paulo; Pereira, Paulo A. A.[Excerpt] The International Society for Intelligent Construction 2022 Conference (ISIC 2022) is the third ISIC international conference, following the first conference in Minnesota, USA, in 2017 and the second conference in Beijing, China, in 2019. This conference is organized under the umbrella of the International Society for Intelligent Construction (ISIC) following the mission: “… promote intelligent constr...
Trends on construction in the Digital Era: proceedings of ISIC 2022
Correia, A. Gomes; Azenha, Miguel; Cruz, Paulo J. S.; Novais, Paulo; Pereira, Paulo A. A.[Excerpt] The International Society for Intelligent Construction 2022 Conference (ISIC 2022) is the third ISIC international conference, following the first conference in Minnesota, USA, in 2017 and the second conference in Beijing, China, in 2019.This conference is organized under the umbrella of the International Society for Intelligent Construction (ISIC) following the mission: “… promote intelligent constru...
Wander effect on pavement performance for application in connected and autonomo...
Pais, Jorge C.; Pereira, Paulo A. A.; Thives, LiseaneConnected and Autonomous Vehicles (CAV) will change how road engineers design road pavements because they can position themselves within a traffic lane, keeping their position in the lane more precisely than human-driven vehicles. These vehicles will have lower lateral wandering, which can induce more damage to pavements, such as cracking and permanent deformation, than the conventional vehicles, with consequen...
Contribution of asphalt rubber mixtures to sustainable pavements by reducing pa...
Thives, Liseane Padilha; Pais, Jorge C.; Pereira, Paulo A. A.; Palha, Carlos Alberto Oliveira Fernandes; Trichês, GlicérioAsphalt rubber mixtures have been used as pavement surface layers due to their ability to prevent early degradation, and are considered a sustainable option. This study performed analysis comparing the fatigue resistance of asphalt rubber mixtures of different combinations of asphalt bases, crumb rubber, and gradation, in order to estimate the performance of asphalt rubber mixtures as pavement surface layers. T...
Performance of asphalt rubber mixture overlays to mitigate reflective cracking
Thives, Liseane Padilha; Pais, Jorge C.; Pereira, Paulo A. A.; Minhoto, Manuel C.; Trichês, GlicérioAdequately predicting overlay behaviour is essential for flexible pavement rehabilitation to reach the predicted lifespan. Reflective cracking is one of the main failure mechanisms affecting overlay performance. This failure may occur due to cracks in the lower layers that propagate to the overlay due to traffic loads, temperature variations, shrinkage cracking of cement-treated layers, and subgrade movements. ...
Feasibility of using a lignin-containing waste in asphalt binders
Pérez, Ignacio; Pasandín, Ana R.; Pais, Jorge C.; Pereira, Paulo A. A.A lot of water waste streams are produced during the production of hardboard panels. This paper analyses the feasibility of using a lignin-containing waste from the hardboard industry in asphalt binders. It would contribute to both waste reduction and decrease of the consumption of asphalt in order to obtain environmental, economic and social benefits. The waste from the hardboard industry was not subjected to ...
Effect of road pavement defects on tyre-road noise
Freitas, E. F.; Torres, Hélder; Vuye, Cedric; Pereira, Paulo A. A.Tyre-road noise is the main source of noise in vehicles at speeds above 40 km/h and therefore a major contributor to noise annoyance. As the road surface is submitted to traffic loading and weather, its characteristics change, and different types of distresses become visible on the surface, affecting the tire-road noise. This study aimed at analysing the tyre-road noise measured in different types of road pavem...
The pavements cost due to traffic overloads
Pais, Jorge C.; Figueiras, Hélder; Pereira, Paulo A. A.; Kaloush, KamilThe traffic on roads is characterised by a large number of different vehicle types; these vehicles are considered in the pavement design by converting their effects through the use of truck factors. The truck factors transform the damage applied by the various axle types and loads to a standard axle. However, there is a considerable number of vehicles that travel with axle loads above the maximum legal limit. T...
Use of lignin biopolymer from industrial waste as bitumen extender for asphalt ...
Pérez Pérez, Ignacio; Rodríguez Pasandín, Ana María; Pais, Jorge C.; Pereira, Paulo A. A.Liquid waste containing lignin, a biopolymer of vegetable origin, is generated from the production of wood hardboards. Because polymers improve the performance of asphalt mixtures, this work studies the possibility of using this industrial waste as a bitumen extender in the production of asphalt mixtures. Thus, asphalt mixtures with 0% (control), 5%, 10%, 20%, and 40% of industrial waste were produced. The bitu...