34 documents found, page 1 of 4
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. ...
Determinação do coeficiente de Poisson de solos, compactados, no ensaio triaxia...
Trichês, GlicérioSubmitted by Alberto Vieira (martins_vieira@ibest.com.br) on 2021-01-28T16:31:53Z No. of bitstreams: 1 163895.pdf: 1840318 bytes, checksum: 39435657023225f08c4f85f422ac5693 (MD5); Approved for entry into archive by Moreno Barros (moreno@ct.ufrj.br) on 2022-03-28T13:29:43Z (GMT) No. of bitstreams: 1 163895.pdf: 1840318 bytes, checksum: 39435657023225f08c4f85f422ac5693 (MD5); Made available in DSpace on 2022-03-2...
Resistência de misturas com asfalto borracha à propagação trincas
Thives, Liseane P.; Pais, Jorge; Pereira, Paulo; Minhoto, Manuel; Trichês, GlicérioA propagação de fendas é um dos principais mecanismos de ruína que afetam o desempenho de pavimentos flexíveis reabilitados. Este mecanismo ocorre pela presença de fendas no revestimento antigo que se propagam para a nova camada devido às cargas de tráfego e variações de temperatura. Prever adequadamente o comportamento do tipo de reforço escolhido é essencial para que a reabilitação do pavimento alcance a vida...
Performance of asphalt rubber mixture overlays to mitigate reflective cracking
Thives, Liseane Padilha; Pais, Jorge; Pereira, Paulo A.A.; Minhoto, Manuel; 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. ...
Constructing better roads with asphalt rubber
Pais, Jorge C.; Thives, Liseane P.; Pereira, Paulo A. A.; Trichês, GlicérioBrazilians mixtures containing asphalt rubber were evaluated by mechanical laboratory tests. A conventional mixture with asphalt CAP-50/70 was produced as a mixture control. With the aim of compare the Brazilians mixtures performance, a Portuguese asphalt rubber mixture was tested as well. The testing set involved the determination of the mechanical properties, fatigue and permanent deformation, of asphalt rubb...
Constructing better roads with asphalt rubber
Pais, Jorge C.; Thives, Liseane P.; Trichês, Glicério; Pereira, P.Brazilians mixtures containing asphalt rubber were evaluated by mechanical laboratory tests. A conventional mixture with asphalt CAP-50/70 was produced as a mixture control. With the aim of compare the Brazilians mixtures performance, a Portuguese asphalt rubber mixture was tested as well. The testing set involved the determination of the mechanical properties, fatigue and permanent deformation, of asphalt rubb...
Improving asphalt mixtures behaviour using scrap tires
Thives, Liseane P.; Trichês, Glicério; Pais, Jorge C.; Pereira, Paulo A. A.Used tires represent one of the major solid waste problems in the world. Recycling or disposing of tires in a manner which is economically feasible and environmentally acceptable has been a challenge that requires further research and development. The use of scrap tires in asphalt pavements, known as asphalt rubber, can minimize environmental impact and maximize conservation of natural resources. One of the mos...
Estudo da deformação permanente em pavimentos novos e reabilitados
Thives, Liseane P.; Trichês, Glicério; Pais, Jorge C.; Pereira, Paulo A. A.; Rohde, LucianaA deformação permanente é uma das principais degradações que ocorrem nos pavimentos flexíveis e se reflete em afundamentos que aparecem na superfície dos revestimentos asfálticos sob a forma de fundamento de trilha de roda. Este fenômeno é característico de elevadas temperaturas, ocorrendo, rincipalmente no verão. Apesar da parcela de importância da deformação permanente ser relativa ao gregado, a porção devida...
Assessment of the digestion time of asphalt rubber binder based on microscopy a...
Thives, Liseane; Pais, Jorge C.; Pereira, Paulo A. A.; Trichês, Glicério; Amorim, Sara R.One of the most promising techniques for increasing the performance of pavement rehabilitation is the use of asphalt rubber mixtures, which utilize crumb rubber from used tires for modifying the asphalt to produce asphalt rubber binder. Crumb rubber can be produced by two different types of grinding, ambient and cryogenic. The asphalt rubber binder used in asphalt rubber mixtures can be obtained through two dif...