Asphalt Pavement Performance
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Modelo de previsión de la progresión del área de fisuras en pavimentos asfálticos
This work presents the development of a model to predict cracking progression in hot-mix asphalt pavements, based on information obtained from a database maintained by State of Bahia Department of Transportation, with data collected in 2004. A factorial design was performed to arrange the data available in order to facilitate the statistical analysis. The fa
J. Transp. Lit.. Publicado em: 2014-04
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2. Contribuição para calibração de curva de evolução de afundamentos em trilha de roda de revestimentos asfálticos com utilização de resultados obtidos de simulador de tráfego em escala real. / A contribution to the calibration of performance curves for the prediction of permanent deformation in asphalt pavements using the results obtained from a large scale mobile traffic simulator
Permanent deformation, or rutting, is a critical type of pavement distress given that it is directly associated with transportation costs, due to a reduction of the ride quality, and user safety, due to poor driving conditions or water build-up during rainy periods that affect the tire-pavement interaction. In the case of pavements of highways belonging to c
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/03/2012
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3. UTILIZAÇÃO DO AGREGADO SIDERÚRGICO (ESCÓRIA DE ACIARIA) EM REVESTIMENTO ASFÁLTICO TIPO TRATAMENTO SUPERFICIAL / UTILIZAÇÃO DO AGREGADO SIDERÚRGICO (ESCÓRIA DE ACIARIA) EM REVESTIMENTO ASFÁLTICO TIPO TRATAMENTO SUPERFICIAL
Environmental sustainability requires preventive or mitigating environmental impacts caused by industrial production activities, to preserve non-renewable mineral resources. In this sense, this work is to evaluate through experimental studies predominantly by laboratory testing and field application the use of steel slag produced by Arcelor Mittal Tubarão i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/04/2011
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4. Evaluating permanent deformation of asphalt mixtures: field performance and laboratory data. / Estudo de deformação permanente em trilha de roda de misturas asfálticas em pista e em laboratório.
Dentre os diversos tipos de defeitos estruturais a que um pavimento está sujeito, a deformação permanente em trilha de roda da camada de rolamento é um dos mais importantes, pois além de propiciar uma degradação acelerada da estrutura do pavimento, ele reduz consideravelmente a segurança do usuário. Este trabalho pesquisa os processos que levam à d
Publicado em: 2010
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5. Comparison between the field performance of CAP 30-45 and CAP 50-70 for pavement layers. / Comparação do comportamento em campo de concretos asfálticos com CAP 30-45 e com CAP 50-70 para revestimentos de pavimentos.
In the last years, the volume of commercial heavy vehycles that transit through Brazilian highways is increasing. In addition, pavement wearing courses are exposed to the influence of high temperatures, that cause precocious asphalt layer distresses Therefore, asphalt mixture alternatives to the high traffic higwayshave been studied. One of the possibilities
Publicado em: 2008
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6. Mobile linear traffic simulator method to forecast behavior and performance of asphalt pavements. / Método de uso de simuladores de tráfego linear móvel de pista para a determinação de comportamento e previsão de desempenho de pavimentos asfálticos.
Full-scale accelerated pavement testing is defined as the controlled application of a wheel load in a pavement structure to determine the pavement system response and its performance under accelerated conditions of accumulated damage in a compressed time period (METCALF, 1996). Loads at or above the legal maximum allowed by highway agencies can be applied at
Publicado em: 2008
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7. EFEITO DA RADIAÇÃO SOLAR NO ENVELHECIMENTO DO CONCRETO BETUMINOSO USINADO A QUENTE
The asphalt aging due to the action of the solar radiation can be considered in the study of the performance of asphalt pavement, especially in Brazil, where the sunstroke is very important. The aim of this work is to simulate and investigate the asphalt aging due to the solar radiation effect. The hot worked bituminous cement was submitted to the weather-O-
Publicado em: 2007
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8. Study of synthetic calcinated clay aggregates behavior for use in pavement asphalt for Manaus / Estudo do comportamento de agregado sintético de argila calcinada para uso em revestimentos asfálticos para Manaus
In regions as the City of Manaus, where the superficial stone material is scarce or is to be found only at long distances, and a thick clay superficial layer becomes present, the alternative for the manufacture of artificial aggregates, having the clay as raw material, it comes as alternative, beyond replacing the normally used granular material - the pebble
Publicado em: 2007
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9. Ensaios acelerados de pavimentos para avaliação de desempenho de recapeamentos asfálticos / Accelerated pavement testing to evaluate the performance of asphalt overlays
Esta dissertação apresenta uma avaliação da eficiência de um recapeamento constituído por mistura de asfalto-borracha (processo via-úmida), no retardamento de reflexão de trincas, através da técnica de ensaios acelerados. Para a realização do estudo foi construído um pavimento experimental com camada final de terraplenagem de argila arenosa de c
Publicado em: 2007
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10. Avaliação do reaproveitamento de areia de fundição como agregado em misturas asfálticas densas / Evaluation of the reusing of waste foundry sand as an aggregate in dense asphalt
Foundry sand is an industrial solid waste resulting from sand casting process in foundry industries. Depending on the type of foundry process (green sand molding, shell sand molding, molding using synthetic resin and others) and of the type cast metal, this waste may contain elements and/or chemical compounds that may cause environmental impact. The substanc
Publicado em: 2004
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11. Influence of drainage system efficiency in the asphalt pavement performance. / Influência da drenagem subsuperficial no desempenho de pavimentos asfálticos.
Since the implementation of the first roads, there are indications that constructors already had knowledge concerning drainage influence in the pavement performance. Many countries, where highway administration costs are criteriously available along pavement lifetime, have been developing researches regarding considerations about harmful effects from excessi
Publicado em: 2003
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12. Estudo de gradientes térmicos e deformações em "whitetopping" ultradelgado. / Thermal gradients and deformations in ultra-thin witetopping.
In this work, several factors affecting behavior and performance of ultra-thin whitetopping were evaluated taking advantage of a full scale experimental pavement, restored by applying such technique. Temperatures and thermal gradients in concrete thin slabs were evaluated by almost one year, comprising al the seasons. Load tests were carried out to allow str
Publicado em: 2001