Resilient Modulus
Mostrando 13-24 de 31 artigos, teses e dissertações.
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13. Proposta de reaproveitamento de areia de fundição em sub-bases e bases de pavimentos flexíveis, através de sua incorporação a solos argilosos / Foundry sand reuse proposal in bases and sub-bases of flexible pavements, through its incorporation to clay soils
Um dos maiores problemas do setor da fundição de metais é a produção de resíduos sólidos, constituídos basicamente pelas areias residuais. Geralmente, o uso de aditivos e ligantes no processo de fundição limita a reutilização da areia, o que obriga as indústrias a destinar esse resíduo a depósitos de descarte, apesar da boa qualidade que a are
Publicado em: 2008
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14. Estudo Laboratorial da Viabilidade do uso de Fibras de Coco em Misturas AsfÃlticas do Tipo SMA / STUDY OF THE VIABILITY OF THE STAPLE FIBRE USE OF COCONUT IN ASPHALT MIXTURES SMA
The technology of asphalt materials and mixtures evolves very in these last three decades in the Europe and the North America. To the rolling layer, it comes growing the use in developed countries of more resistant and more durable asphalt mixtures, being that some of these solutions involve the job of discontinous graduation, as the SMA (Stone Matrix Asphal
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/08/2007
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15. Um procedimento de retroanálise para pavimentos flexíveis baseado na teoria do ponto inerte e em modelagem matemática / A backcalculation procedure for flexible pavements based on inertial point theory and in mathematical modeling
A backcalculation procedure for flexible pavements is introduced based on inertial point theory for subgrade backcalculation readapted to theoretical deflection basins obtained with the load to Benkelman beam test. Beside subgrade backcalculation, it was developed a factorial mathematical model to obtain equivalent resilient modulus from the layers presents
Publicado em: 2007
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16. 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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17. Study of resilient behavior of tropical sandy soils from interior of Sao Paulo state / Estudo do comportamento resiliente dos solos tropicais grossos do interior do Estado de São Paulo
O módulo de resiliência é uma propriedade mecânica dos solos indispensável para análise estrutural de pavimentos em termos de tensão e deformação. O principal ensaio laboratorial para estimativa do módulo de resiliência dos solos é o ensaio triaxial cíclico no qual existe um maior controle das condições da amostra, dos carregamentos aplicados
Publicado em: 2007
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18. Avaliação da influência do tipo de agregado, do tipo de ligante, do tipo de moldagem e do tipo de fíler na vida de fadiga de misturas asfálticas densas / An evaluation of aggregate type, asphalt type, molded type, and filler type on fatigue lifespan of asphalt mixtures
The purpose of this research is to evaluate the fatigue behavior of some asphalt mixtures, by means of indirect tests with controlled stress, considering the variation of four factors: aggregate type, asphalt type, molded type and filler type. The specimens was molded in same gradation (center of DNER C gradation), according to Marshall, ASTM D 4867 or AASHT
Publicado em: 2007
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19. 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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20. Comportamento mecânico de agregado reciclado de resíduo sólido da construção civil em camadas de base e sub-base de pavimentos. / Mechanical behavior of recycled aggregate of construction and demolition waste in base and sub base layers of pavements.
Construction and demolition waste (CDW) is generated in significant amounts in medium and large size cities in Brazil and are usually disposed of illegally. For the thousands of kilometers of unpaved urban roads, the recycled aggregate of CDW is an alternative to conventional paving materials. This dissertation analyses the mechanical behavior of the recycle
Publicado em: 2007
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21. 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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22. The influence of post-compaction moisture content variation on the mechanical behavior of soils from São Paulo state pavements / A influência da variação da umidade pós-compactação no comportamento mecânico de solos de rodovias do interior paulista
On road construction, the field compaction conditions are usually close to those determined from Proctor tests. Environmental variations may lead to changes in the pavement moisture and also changing its resilient properties. The main objective of this research is to study the influence of post-compaction moisture content variation on the resilient modulus o
Publicado em: 2006
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23. Considerations on adhesion and moisture susceptibility of asphalt mixtures by mean of mechanical properties / Considerações acerca da adesão e da suscetibilidade à umidade de misturas asfálticas densas à luz de algumas propriedades mecânicas
This study presents a contribution to the understanding of the adhesion phenomenon and its loss when water acts in asphalt mixtures. Several kinds of asphalt mixtures were evaluated by means of ASTM and AASHTO moisture susceptibility tests. Experiments based on factorial design were performed considering some of the main factors that act on adhesion phenomen
Publicado em: 2006
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24. Avaliação das influências do tipo de ligante e do volume de vazios na vida de fadiga de algumas misturas asfálticas / Avaliation of the influences of asphalt s types and air voids in the fatigue s life of some asphalt mixtures
The purpose of this research is to evaluate the fatigue behavior of some asphalt mixtures, by means of indirect tensile tests with controlled stress. In order to evaluate different asphalt mixtures, it was molded specimens according to Marshall design method, considering the variation of two factors: asphalt type and air voids. Asphalt concrete specimens wer
Publicado em: 2005