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Determinação do dano em pavimentos asfálticos por meio da combinação do modelo ...
Santiago, Lucimar da Silva; Silva, Samuel de Almeida Torquato e; Soares, Jorge BarbosaPerformance prediction of materials in the field is one of the challenges in pavement engineering. Such prediction requires mathematcal modeling that relates materials characterizaon in the laboratory and the performance of these same materials in actual structures. Since fatigue damage is one of the main distresses in Brazilian asphaltic pavements, the objective of this work is to present a methodology to dete...
Modelagem da vida de fadiga e do acúmulo de deformações permanentes em paviment...
Teixeira, Victor Ferreira; Sousa, Flávio Vasconcelos de; Soares, Jorge BarbosaIt is known that the conditions of the Brazilian roadways have an enormous impact over the national economy. In face of this problem, there is a need for new methodologies for pavement analyses and design that can more accurately predict pavement distresses. Among the main methods currently used, one can find purely empirical methods and mechanistic-empirical methods which make use of the pavement structure res...
Desenvolvimento de função de transferência para previsão de área trincada em pa...
Santiago, Lucimar da Silva; Babadopulos, Lucas Feitosa de Albuquerque Lima; Soares, Jorge BarbosaThe evolution of materials characterization methods and of the amount of materials tested nationwide in the past decades made it possible to organize a road pavements database. These are essential information for pavement design with transfer functions that allow performance prediction from computational modeling. The main objective of this work is to develop a transfer function associating laboratory fatigue d...
Considerações sobre o uso de conceitos da mecânica da fratura para o projeto de...
Soares, Jorge BarbosaThe tensile strength used in the design of concrete structures, such as concrete pavement systems, has typically been determined based on small test specimens. It is well known that strength values obtained from geometrically different specimens can be largely different. Naturally, one must question the applicability of strength values obtained from these conventional specimens to an actual structure. This defi...
Avaliação de parâmetros FAD-CI e seus impactos na vida de fadiga de misturas as...
Oliveira, Jardel Andrade de; Soares, Jorge Barbosa; Nascimento, Luis Alberto Herrmann doAmong the most common distresses in pavements are rutting and fatigue cracking of HMA (Hot Mixture Asphalt) used in surface courses. These defects still lack simple and consistent laboratory methodologies capable of indicating HMA characteristics for higher performance. There are theories that contribute, still in the design phase, to the selection of aggregate gradation and other parameters, to produce HMAs wi...
Efeito do uso de corpos de prova moldados e extraídos na caracterização mecânic...
Silva, Lucas Sassaki Vieira da; Bastos, Juceline Batista dos Santos; Soares, Jorge BarbosaThere is still no consensus on the effects of using molded or cored/cut specimens on the mechanical characterization of asphalt mixtures. The objective of this paper is to evaluate the difference in using molded or cored/cut specimens of a single asphalt mixture by means of different laboratory tests: uniaxial and triaxial permanent deformation, uniaxial tension-compression fatigue, dynamic modulus, indirect te...
Avaliação de diferentes formas de captação de energia para pavimentos do Estado...
Oliveira, Alessandra Honório; Soares, Jorge BarbosaFor the economic growth of a region, energy policies must prioritize the development of technologies that guarantee the supply and access to energy, preferably through sustainable matrices. In addition to conventional sources of energy such as hydro, wind, solar, thermal and energy of the oceans, research has been using road pavement as an energy source. Solar energy can be captured by the pavement, where it is...
Avaliação do efeito de aditivos na reologia de materiais asfálticos e cimentícios
Dias, Davidson Menezes; Babadopulos, Lucas Feitosa de Albuquerque Lima; Soares, Jorge BarbosaReologia de concretos asfálticos (e também de misturas finas e de ligantes) tem assumido relativa importância no cenário mundial da Pavimentação. A análise reológica vem sendo usada como ferramenta para apoio à dosagem de misturas asfálticas, uma vez que possibilita avaliar o efeito de modificações na dosagem (e.g. inclusão de aditivos e teor utilizado) no comportamento mecânico do material. Em reologia de asfa...
Efeito dos períodos de repouso no ensaio de fadiga em misturas asfálticas e em ...
Oliveira, Letícia Sousa de; Babadopulos, Lucas Feitosa de Albuquerque Lima; Soares, Jorge BarbosaO trabalho visa contribuir para o estudo do fenômeno de trincamento por fadiga nos revestimentos asfálticos por meio da avaliação da influência dos períodos de repouso (rest periods – RPs) nas escalas do ligante e da respectiva mistura asfáltica completa. Os materiais nas escalas em estudo serão submetidos aos ensaios de fadiga com os mesmos RPs. Será utilizado o ensaio de fadiga uniaxial por tração-compressão ...
Avaliação de variabilidade de misturas asfálticas aplicadas em um trecho experi...
Santos, Francisco Raul Teixeira; Silva, Lucas Sassaki Vieira da; Bastos, Juceline Batista dos Santos; Soares, Jorge BarbosaAsphaltic mixtures have properties that might change due to factors such as temperature, storage, transportation and design characteristics related to its constituents. This variation may result in pavement distresses such as cracking and excessive wearing, generating problems to drivers and high maintenance costs. From the asphalt mixture’s volumetric characteristics from a test section and field data collecte...