Strength Envelope
Mostrando 1-12 de 41 artigos, teses e dissertações.
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1. Proposal of a failure envelope for artificially cemented sand
Abstract Soils are particulate materials, which often stand out for their low shear strength. In most cases, this aspect justifies adapting the geotechnical project for this characteristic, which can be even more problematic in the case of soft sands, since it often occurs in superficial layers in various parts of the metropolitan region of Fortaleza. Theref
REM - International Engineering Journal. Publicado em: 2022
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2. Envoltória de resistência do concreto compactado com rolo (CCR),incluindo o efeito escala / Roller compacted concrete (RCC)strength envelope including the scale effect
A tecnologia de construção de barragens com Concreto Compactado com Rolo tem passado por melhorias notáveis nas áreas de tecnologia do concreto e do procedimento executivo. Pode-se citar o enriquecimento do concreto compactado com rolo de face de barragens e toda a seqüência que leva à obtenção de tal enriquecimento, a um curto prazo executivo, pelo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/08/2010
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3. Resistência de um solo não saturado a partir de ensaios com teor de umidade constante (CW) / Shear strength of an unsaturated soil from constant water content tests
In many parts of the world, geotechnical engineers frequently deal with unsaturated soils, and the performance of constructions on such soils depends on their mechanical characteristics, and among them, the shear strength. The unsaturated soil shear strength can be experimentally determined by using techniques which allow soil suction control or measurement
Publicado em: 2010
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4. Envoltória de resistência do concreto compactado com rolo (CCR),incluindo o efeito escala / Roller compacted concrete (RCC)strength envelope including the scale effect
A tecnologia de construção de barragens com Concreto Compactado com Rolo tem passado por melhorias notáveis nas áreas de tecnologia do concreto e do procedimento executivo. Pode-se citar o enriquecimento do concreto compactado com rolo de face de barragens e toda a seqüência que leva à obtenção de tal enriquecimento, a um curto prazo executivo, pelo
Publicado em: 2010
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5. 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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6. Avaliação de embalagens flexiveis esterilizaveis e alimentos de pronto consumo para equipagens de aeronaves e para uso terrestre. / Evaluation of retortable pouch and foods of ready consumption for equipages of aircraft and terrestrial use.
The operational meals means are fundamental to the implementation of the activities of training and actual deployment of the armed forces around the world and is still employed in circumstances of contingency of civil order. In this sense, the Brazilian Air Force, in the search for solutions and continuing improvements in the area of the food supply, is prio
Publicado em: 2008
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7. Effect of potential shape on the density of the impurity states in nanotube
We analyze the effect of the potential shape on the ground state energy of the off-axis neutral donor in GaAs/Ga1-xAl xAs cylindrical nanotube in the presence of the uniform magnetic field applied along the symmetry axis. To take into account the mixing of the low lying subbands we express the wave function as a product of combination of 1s and 2p x,y wave f
Brazilian Journal of Physics. Publicado em: 2006-09
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8. INFLUÊNCIA DA SUCÇÃO NA RESISTÊNCIA AO CISALHAMENTO DE UM SOLO RESIDUAL DE FILITO DE BELO HORIZONTE, MG / INFLUENCE OF SUCTION ON THE SHEAR STRENGTH OF A FILITE RESIDUAL SOIL FROM BELO HORIZONTE, MG
This work intends to evaluate the influence of suction in the shear strength of a young residual filite soil from Belo Horizonte city, of Minas Gerais, Brazil. The experimental program included conventional tests of geotechnical, chemical and mineralogical characterization. The relationship between suction and water content of soil was obtained by the filter
Publicado em: 2006
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9. Development of a hypoplastic model that represents overconsolidation effects. / Desenvolvimento de um modelo hipoplástico que represente efeitos do sobreadensamento.
Modifications in a hypoplastic model are proposed intending to represent the mechanical behavior of overconsolidated clays. The overconsolidation ratio, the cohesion intercept and indices that represent overconsolidation characteristics are introduced in the model, resulting in parameters with a clear physical meaning and of easy to determine. The constituti
Publicado em: 2006
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10. SHEAR STRENGTH OF AN UNSATURATED COLLUVIUM SOIL FROM RIO DE JANEIRO, RJ / RESISTÊNCIA AO CISALHAMENTO DE UM SOLO COLUVIONAR NÃO SATURADO DO RIO DE JANEIRO, RJ
In this present work one searched to evaluate the characteristics of shear strength and the suction-moisture relation of a tropical mature soil found in experimental field II of PUC-Rio, located in the city of Rio de Janeiro. For the determination of the shear strength of this soil, direct shear test in submerged samples using conventional equipment and dire
Publicado em: 2005
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11. Estudo sobre a resistência ao cisalhamento de um solo residual compactado não saturado. / Study on the shear strength of a residual unsaturated soil.
The main focus of this study is to investigate some aspects of the shear strength and water retention properties of a compacted residual soil, under unsaturated condition. A residual of gneiss obtained from the geotechnical experimental site of the University of São Paulo was used. Based on the compaction curve three molding conditions were adopted for the
Publicado em: 2004
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12. Sobre a relação entre rotação, atividade crosmosférica e abundância de lítio em estrelas subgigantes
The connection between rotation, CaII emission flux and lithium abundance is analyzed for a sample of subgiant stars, with evolutionary status was determined from the Toulouse-Geneve code and HlPPARCOS trigonometric parallax measurements. We noted that the distribution of rotation and CaII emission flux, as a function of effective temperature, shows a discon
Publicado em: 2003