Hot Mix Asphalt
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. Utilization of ferronickel slag in hot mix asphalt
Abstract The growing concern in minimizing the disorderly disposal of waste in nature has been influencing measures that seek to give new environmentally sustainable and economically viable purposes for these materials. The use of steel slag aggregate in road paving emerges as an alternative for reducing the storage of this material in industrial yards, as w
REM, Int. Eng. J.. Publicado em: 2021-01
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2. Laboratory comparison of aging characteristics of warm mix asphalts involving natural and synthetic water containing additives
When comparing the aging characteristics of hot and warm mix asphalts from a technical point of view, it can intuitively be expected that a warm mix asphalt would be less subjected to aging-induced failures due to lower application temperatures. Since the side effects of warm asphalt technology should be investigated distinctly. This study addresses the agin
Mat. Res.. Publicado em: 30/09/2014
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3. 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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4. 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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5. Estudo de misturas asfálticas mornas em revestimentos de pavimentos para redução de emissão de poluentes e de consumo energético. / Study of warm mixes asphalt as a pavement surface for reducing polluants emissions and energy consumption.
In the last years there has been an increasing concern for the environment. In this context, warm mixes asphalt was developed with positive impact not only on the environmental pollution, but also on the energy consumption, due to the reduction of mixing and compaction temperatures. This work compares the behavior of warm mixes asphalts (with surfactant addi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/05/2011
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6. Efeito de fibras sintéticas nas propriedades de ligantes e concretos asfálticos
The asphalt cement plays a major role in hot mix asphalts (HMA) by bonding the mineral aggregates and conferring impermeability. Despite the relatively small percentage of asphalt cement in hot mixes, the mechanical properties of asphalt layers are highly dependent on the quality of the binder. The physical and rheological properties of asphalt binders can b
Publicado em: 2010
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7. 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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8. Analysis of the effects of crumb rubber and shale-oil residue on mechanical properties of asphalt mixtures / Análise dos efeitos da borracha moída de pneu e do resíduo de óleo de xisto sobre algumas propriedades mecânicas de misturas asfáticas densas
In Brazil, since the beginning of the 90s, have been developed researches on the application of asphalt-rubber seeking the reduction of environmental problems created by the used tires, and the improvement of the characteristics of the produced binder. Taking this into account, the purpose of this research is to evaluate the mechanical performance of eight h
Publicado em: 2008
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9. Avaliação da susceptibilidade térmica e do efeito das condições ambientais no enrijecimento de misturas asfálticas densas à luz de seus comportamentos resilientes / Evaluation of the thermal susceptibility and the effect of the environmental conditions in the hardening of dense-graded hot-mix asphalt to the light of their resilient behavior
Este trabalho teve como objetivo avaliar o módulo de resiliência de misturas asfálticas densas sob duas condições. A primeira foi o estudo dos efeitos do enrijecimento de misturas asfálticas densas em condições ambientais diferentes (cinco condições) que são: AAAL (ao ar e à luz), AASL (ao ar e sem luz), AVAL (baixa pressão atmosférica e à luz
Publicado em: 2007
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10. Evaluation of asphalt mixtures produced with conventional peruvian asphalt binder PEN 60/70 and SBS polymer-modified type I 60/60 and PG 76-22 / Avaliação de misturas produzidas com ligantes asfálticos peruanos convencional PEN 60/70 e modificados por polímero SBS tipo I 60/60 e PG 76-22
The main goal of this work is the evaluation of the behavior of conventional peruvian asphalt binder AC PEN 60/70 and SBS polymer-modified asphalts I 60/60 and PG 76-22, when used in hot-mix asphalt (HMA), under both conditions with and without short-term aging. It aims also to establish the asphalt binder performance grade (PG), which is based on the weathe
Publicado em: 2007
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11. Contributions to the study of effects of aggregate properties on mechanical behavior of hot mix asphalt (HMA) / Contribuições ao estudo da influência de propriedades de agregados no comportamento de misturas asfálticas densas
O objetivo principal desta pesquisa é avaliar a influência que as propriedades estudadas dos agregados exercem sobre propriedades volumétricas e mecânicas de misturas asfálticas densas. Para tanto, foram avaliadas as propriedades de consenso e de origem, especificadas pelo Superpave, de um conjunto de agregados, além de suas densidades, porosidade, abs
Publicado em: 2006
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12. 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