Composite Slabs
Mostrando 13-24 de 28 artigos, teses e dissertações.
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13. Análise de um sistema de lajes mistas considerando a influência do atrito dos apoios e a avaliação do momento de inércia efetivo
The aim of this work is to evaluate the behavior and strength of composite slabs considering a rigorous analysis for determination of composite slabs effective moment of inertia (Ilm) and the influence of the friction of the region of the supports. The results of a program of laboratory tests, carried through by RODRIGUES &LAVALL (2005), considering the Stee
Publicado em: 2009
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14. Análise teórica e experimental de vigas mistas de aço e concreto e laje com vigotas pré-moldadas e lajotas cerâmicas em um pavimento tipo / Theorical and experimental analysis of composite steel and concrete beams and slabs made by precast elements with lattice and bricks on a frame
As vigas mistas de aço e concreto são elementos estruturais que resultam da associação de um perfil de aço laminado, formado a frio ou soldado, e de uma laje de concreto podendo esta ser moldada in loco, pré-fabricada ou com forma de aço incorporada. A construção de vigas mistas com laje de vigotas pré-moldadas de concreto não é prevista pela nor
Publicado em: 2009
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15. A influência da técnica do preparo cavitário utilizando laser Er: YAG e dos tipos de materiais restauradores na prevenção de cárie secundária
The influence of the cavity preparation technique and the types of restorative materials containing fluorides in the prevention of the secondary caries lesions was evaluated in this in vitro study. In a logic sequence the subject was approach by four manuscripts. The first study made a bibliographic revision about the laser employment in the prevention of th
Publicado em: 2009
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16. AvaliaÃÃo in situ da influÃncia da utilizaÃÃo de diferentes sistemas adesivos no desenvolvimento da cÃrie secundÃria em esmalte / In situ evaluation of secondary caries inhibition promoted by self-etch adhesive systems containing antibacterial agents
Contemporary adhesives systems present satisfactory bonding to enamel and dentin. However, replacement of the restorations due to secondary caries formation is still a major problem and of great concern in Dentistry. Thus, this study assessed in situ the effects of adhesive systems containing or not fluoride and/or the antibacterial monomer 12-methacryloylox
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/08/2008
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17. Análise do comportamento e da resistência de um sistema de lajes com fôrma de aço incorporada
The objective of this thesis is to analyze the behavior and strength of composite slabs with ribbed decking built with steel deck MF-50, manufactured by METFORM S. A., after concrete has been cured. A series of tests was conducted to identify and evaluate the parameters that affect this composite slab performance. The experimental program consisted of tests
Publicado em: 2007
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18. Contribution for the design of multiple storey buildings with composite elements steel-concrete / Contribuição para o projeto e dimensionamento de edifícios de múltiplos andares com elementos estruturais mistos aço-concreto
Este trabalho objetivou o estudo dos edifícios de múltiplos andares constituídos por elementos mistos aço-concreto, com enfoque acadêmico, porém abordando aspectos e recomendações normativas diretamente aplicadas na prática corrente da engenharia estrutural. A revisão bibliográfica foi realizada com base em estudos acadêmicos e normativos além d
Publicado em: 2007
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19. Análise teórica e experimental de conectores de cisalhamento e vigas mistas constituídas por perfis de aço formados a frio e laje de vigotas pré-moldadas / Theoretical and experimental analysis of shear connectors and composite beams constituted of cold-formed steel beams and floor system with lattice girder beams
In Brazil, the lack of hot-rolled members and high cost of welded steel beams have increased the use of composite beams made of cold-formed steel beams and floor system with lattice girder beams, whose structural behavior is not perfectly understood. Although this system is similar to the one composed of hot-rolled steel beams and concrete slabs, it is impor
Publicado em: 2007
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20. Comportamento de pilares mistos, com ênfase na zona de introdução de cargas
This work presents the study of composite columns with emphasis on local load introduction zones. The main reason of studying local load introduction zones, here named ZIC, or ZICs, is the need of understanding their behavior not easily found in technical literatures. Experimental analysis with 6 (six) real scale models, elasto-plastics analysis of those tes
Publicado em: 2006
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21. Influencia dos ciclos termicos e mecanicos na resistencia de união de restaurações classe II em resina composta confeccionadas com tres sistemas adesivos / Influence of thermal and mechanical load cycling on bond strength of Class II composite resin restorations using three adhesive systems
The aim of this study was to evaluate the influence of thermal and mechanical loading cycling on microtensile bond strength of Class II composite restorations in dentin, with three adhesive systems. One hundred and sixty eight slot vertical cavities were prepared on proximal surfaces of bovine teeth, and divided according to the adhesive system used (Single
Publicado em: 2005
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22. Comportamento dos sistemas adesivos com fluor frente ao desafio cariogenico
The aim of this study was to investigate the behavior of fluoride-free and fluoride-containing adhesive systems subject to dynamic chemical induction of secondary caries, by means of the microtensile bond strength test, establishment of carious lesion depth and the amount of fluoride-ion release from each adhesive system. Eighty extracted bovine incisors wer
Publicado em: 2005
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23. Estudo comparativo de respostas estruturais antes da cura do concreto de formas metálicas incorporadas às lajes
Composite slabs are those in which cold formed steel sheets, fitted in each other at the edges, are used as shuttering, capable of supporting the wet concrete and construction loads, and as a positive reinforcement for the slab after concrete has hardened. There are some means of providing interlocking between the profiled steel sheet and the concrete that r
Publicado em: 2003
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24. Avaliação de tecnicas para inserção da resina composta e da utilização de um composito de baixa viscosidade na resistencia de união a parede gengival de cavidades classe II
The aim of this study was to evaluate the effects of different filling techniques, cavity configuration and use of a low-viscosity composite liner on bond strength to the dentin of Class II cavities gingival floor; analyze the failure modes of fractured specimens; and observe the site available for bonding with a Scanning Electron Microscope (SEM). Standardi
Publicado em: 2003