Direct Shear Test
Mostrando 13-24 de 26 artigos, teses e dissertações.
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13. Estudo de variaveis que atuam no processo de cimentação de restaurações ceramicas : atenuação da luz, modos de ativação e tratamento superficial / Study of variables that act in the luting process of ceramic restorations : light attenuation, activation mode, and surface treatment
The durability of ceramic restoration depends of factors like the conversion degree of a luting agent and the interaction of this luting agent with the ceramic internal surface. These in vitro studies evaluate: (1) the influence of different ceramics and the effect of different activation modes on Knoop Hardness Number (KHN) of a dual agent luting, immediate
Publicado em: 2008
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14. Avalição in vitroda resistência ao cisalhamento de braquetes colados em diferentes sistemas cerâmicos / In vitro short-term evaluation of shear strength of brackets bonded to different porcelain systems
Orthodontic treatment in the adult population has lately gained popularity in an attempt to improve esthetic and function. It is, however, a common feature in these patients, that their dentition is restored by resin veneers, porcelain fused to metal and all ceramic crowns. In this context, the orthodontist faces the challenge of bonding brackets to differen
Publicado em: 2007
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15. Validação de uma metodologia de ensaio de resistência ao cisalhamento para avaliação da aderência de interfaces revestimento metálico-bainha de cimento aplicada a poços de petróleo
Improving the adherence between oilwell metallic casing and cement sheath potentially decrease the number of corrective actions present/y necessary for Northeastern wells submitted to steam injection. In addition to the direct costs involved in the corrective operations, the economic impact of the failure of the primary cementing aIso includes the loss in th
Publicado em: 2007
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16. Estudo geolÃgico-geotÃcnico de uma encosta com problemas de instabilidade no MunicÃpio de Camaragibe - PE
The current work presents a study regarding the existing instability in the slope localized in the ascent of the Vale das Pedreiras, in the municipality of Camaragibe â PE. The principal objective of the research was to identify the causes and to undestand the mechanisms involved in the problem jointly with the realization of an analysis of the stability of
Publicado em: 2007
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17. "Estudo do comportamento de um solo residual de gnaisse não saturado para avaliar a influência da infiltração na estabilidade de taludes" / "Study of the behavior of a residual unsatured soil for evaluated of the influence infiltration in the slope stability"
Landslides in tropical soils are often the result of advance of the wetting due to rainfall. This advance results from an increase in pore water pressure, reduction in present soil matric suction, reduction in the shear strength of the soil. This work will present a study related to the shear strength of unsaturated soils, including an experimental study, in
Publicado em: 2006
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18. 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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19. Estudo geolÃgico â geotÃcnico do processo erosivo em encostas no parque metropolitano armando de holanda cavalcanti - Cabo de Santo Agostinho/PE
Water erosion for if dealing with to a so vast and complex subject and as many implications need to be monitored, to be analyzed and to be understood in some scales. The inquiry campaigns must be based mainly on the involved mechanisms in the process. It is necessary to have relative information of the way, in what it says respect to the possibility of diffe
Publicado em: 2006
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20. Modelo de atrito estático em interfaces de contato entre concreto e areia / A model for the static friction between concrete-sand interface contact
Esta tese apresenta os princípios e a formulação de um modelo não-linear de atrito estático em interface de concreto areia. A hipótese básica para desenvolvimento das equações consiste na ocorrência do atrito de deslizamento (atrito verdadeiro), do atrito de rolamento (rearranjo das partículas) e da dilatância (variação de volume durante o cisa
Publicado em: 2006
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21. 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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22. REINFORCEMENT OF LATERITIC SOIL WITH RANDOMLY SISAL FIBERS DISTRIBUTED TREATED WITH RECYCLED EPS / Reforço de Solo Laterítico com Fibras de Sisal de Distribuição Aleatória, Tratadas Superficialmente com EPS Reciclado
The high costs of the civil engineering construction requires the necessity to develop studies about the process of the stabilization and reinforcement which improves some geotechnical soils properties being part of the constructive specifications. The reinforcement technique of the soils with the inclusion of natural fibers has been studied for many researc
Publicado em: 2005
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23. IMPLEMENTATION OF THE GEOTECHNIC ENGINEERING EXPERIMENTAL FIELD OF UFSM / IMPLANTAÇÃO DO CAMPO EXPERIMENTAL DE ENGENHARIA GEOTÉCNICA DA UFSM
Presently, on the Geotechnic Engineering art, the superficial and deep foundation projects are conditioned for the load capacity and for the admissibles settlements. The foundation projects and geotechnic sites in Santa Maria/RS have a preponderant empirical character. The soil knowledge are based, almost exclusively, on their behavior on previous sites and
Publicado em: 2004
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24. CaracterizaÃÃo geotÃcnica de um solo de calcÃrio da Encosta Continental/PE-18, Paulista-PE, com Ãnfase na resistÃncia ao cisalhamento
The main objective of this dissertation is the study of the geotechnical characteristics, of the layer of calcareous silty clay involved in the landslides that occurred in an area situated in highway BR 101 North, PE 18, in the industrial district of Paulista, with emphasis in its shear strength. A slope with instability problems between highway PE- 18 and t
Publicado em: 2003