220 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...
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...
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...
The heating and compaction of asphalt mixtures as a self-healing mechanism
Santos, Caio R.; Cabette, Marina M.; Pais, Jorge C.; Pereira, Paulo A. A.First Online: 26 September 2021; Asphalt mixtures can recover their strength completely autonomously, or only with a small external stimulus, like heat. Therefore, this paper aims to investigate the recovery of asphalt mixtures by heating and recompacting them. Asphalt mixtures AC25 (maximum aggregate size 25 mm) were produced with conventional bitumen, varying asphalt content, ie 3.7, 4.0, 4.3, and 4.6%. In or...
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."Published online: 30 January 2019"; 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 har...
Assessing self-healing asphalt by the heating of asphalt mixtures
Santos, Caio; Cabette, Marina; Pais, Jorge C.; Carvalho, Vitor; Pereira, Paulo A. A.Roads are the essential transport modal worldwide since it facilitates the movement of people and goods. Therefore, it is a concern to reduce costs and be sustainable for maintenance and rehabilitation. So self-healing has been studied. The self-healing properties of the asphalt mixtures had already been studied. It is previously known that asphalt mixtures can recover its strength entirely autonomously, or jus...
Evaluating the properties of bioasphalt produced with bio-oil derived from biod...
Santos, Caio Rubens; Pais, Jorge C.; Ribeiro, Jorge; Pereira, Paulo A. A.Environmental concerns are conditioning all processes that use hydrocarbons products, building awareness for a more sustainable environment through products called bio. In this scenario, it is also the production of bitumen, where the substitution of part of the bitumen by bioproducts is a contribution to the sustainability of the environment. Bio-oil, which is currently used for burning with the purpose of pro...