Structural Strengthening
Mostrando 13-24 de 53 artigos, teses e dissertações.
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13. Non-Linear Three Dimensional Finite Elements for Composite Concrete Structures
Abstract The current investigation focused on the development of effective and suitable modelling of reinforced concrete component with and without strengthening. The modelling includes physical and constitutive models. New interface elements have been developed, while modified constitutive law have been applied and new computational algorithm is utilised. T
Lat. Am. j. solids struct.. Publicado em: 2017-03
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14. Structural and Magnetic Properties of Hydrothermal Spinel Ni0.4Zn0.6Fe2O4 Ferrites
Spinel ferrite powder with a nominal composition Ni0.4Zn0.6Fe2O4 was prepared by a hydrothermal method, following by sintering at 700 °C and 900 °C, respectively. The structural and magnetic properties of specimens are studied. It is found that the large particles in specimens are the agglomerates of many small nanoscale crystallites. A strengthening of ch
Mat. Res.. Publicado em: 17/11/2015
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15. Shear Strengthening of RC Deep Beams with Sprayed Fiber-reinforced Polymer Composites (SFRP): Part 2 Finite Element Analysis
AbstractThis paper presents the finite element analysis conducted on SFRP strengthened reinforced concrete (RC) deep beams. The analysis variables included SFRP material (glass and carbon), SFRP thickness (3 mm and 5 mm), SFRP configuration and strength of concrete. The externally applied SFRP technique is significantly effective to enhance the ultimate load
Lat. Am. j. solids struct.. Publicado em: 2015-07
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16. Notas sobre o pensamento de Ignácio Rangel no centenário de seu nascimento
This paper is a tribute to one of the greatest Brazilian intellectuals of the XXth century, Ignácio Rangel, at the Centenary of his birth. The two analytical pillars of his thought are discussed, namely the thesis of the long term "basic duality" of the Brazilian economy and of the national political structure, and the idea that economic planning should alw
Brazil. J. Polit. Econ.. Publicado em: 2014-12
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17. Strengthening of structurally damaged wide shallow RC beams using externally bonded CFRP plates
Reinforced concrete wide shallow beams (WSBs) are commonly used in the joist flooring systems. The structural behavior of WSBs strengthened with carbon fiber reinforced polymer (CFRP) reinforcement was studied on isolated beams and as part of full-scale building. The effect of structural damage on the performance of WSBs flexurally strengthened with CFRP pla
Lat. Am. j. solids struct.. Publicado em: 2014-11
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18. Avaliação da eficiência do uso de conectores de cisalhamento no reforço de vigas de concreto armado pela face comprimida / Evaluation of the efficiency of the use of shear connectors in the strengthening of reinforced concrete beams by the compressed face
A structure is designed to have satisfactory performance during its life given the requirements for which it was designed. When performance becomes unsatisfactory, intervention is needed in order to rehabilitate the structure. Structural rehabilitation is characterized by increasing the structure‟s original load bearing capacity. Of the various existin
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/06/2011
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19. O estudo da família no itinerário formativo do pedagogo/ professor: concepções de docentes e formandos de um Curso de Licenciatura em Pedagogia da Cidade de Salvador/
The family-school relationship has been an object of an expressive number of researches and specialized publications concerning structural changes which happened in both socializing institutions for children, young and adult people in the Brazilian society. This study focused on the pedagogue/teacher as an articulator of the aforementioned relationship. The
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2011
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20. A fragmentação da flora nativa como instrumento de análise da sustentabilidade ecológica de áreas protegidas Espinhaço Sul (MG)
Increasing landscape fragmentation has contributed to biodiversity loss in various Brazilian regions and might be associated with unplanned human land occupation. Conservation and survival of most biological communities are dependent upon the spatial restructuring of landscape often limited to government protected areas. This constitutes the main mechanism u
Publicado em: 2011
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21. Síntese e Estudo Termodinâmico em Adutos de Trihaletos de Antimônio e Bismuto com 2,2- Bipiridina e 1,10- Fenantrolina / SYNTHESIS AND THERMODYNAMIC STUDY IN ANTIMOMY AND BISMUTH TRICHOLRIDE ADDUCTS WITH 2,2-BIPYRIDINE AND 1,10-PHENANTROLINE
In this work were synthesized, characterized and studied experimentally and theoretically, the compounds of general formula [MX3 (L)], where M = Sb or Bi, X = Cl, Br, L = 2,2 -bipyridine (Bpy), 1,10-phenanthroline (Phen). The synthesized compounds were characterized by elemental analysis (C, H, N, Cl and Br), thermal analysis (TG / DTA) and absorption spectr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/09/2010
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22. Selection of high strength natural fibers
By means of dimensional selection of natural lignocellulosic fibers, based on precise diameter measurements, it was recently possible to obtain fibers with relatively higher tensile strength. The present article overviews works on the statistical evaluation, through the Weibull analysis, of the ultimate tensile stress of eight lignocellulosic fibers: sisal,
Matéria (Rio de Janeiro). Publicado em: 2010
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23. Avaliação de concretos reforçados por confinamento com manta de fibra de vidro estrutural e pré-impreganada
Due to the occurrence of diseases in the use of structural reinforcements in composites, with presentation of concrete blanket detachment, has been identified the need to evaluate the performance of concrete reinforced with glass fiber. This study aims to evaluate these concretes by means of testing methodologies, using concrete with low resistance with stru
Publicado em: 2009
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24. O relacionamento entre as farmácias e drogarias e seu distribuidor: uma modelagem à luz da teoria do comprometimento-confiança do marketing de relacionamento / The relationship between the pharmacies and drugstores, and its distributor: a modeling in the the light of the commitment-trust theory of relationship marketing
The relationship marketing contributes for the survival of companies and for the business success. Its goal is to develop deep, lasting and mutually satisfactory relationships between suppliers and customers. The relationship marketing is associated with a strategic perspective, with the company positioning and with the necessity of relationship of the compa
Publicado em: 2009