Reinforced Concrete
Mostrando 25-36 de 472 artigos, teses e dissertações.
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25. Vigas de concreto armadas com bambu
The use of the bamboo as armature in reinforced concrete beams can make rural constructions feasible because it is a low cost construction material and it is easily obtained in the rural areas. That s why, the objective of this work was to present solutions to the principal problems of using the bamboo as armature in concrete structural elements, that are: d
Publicado em: 2002
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26. Surface treatment systems for concrete in marine environment: Effect of concrete cover thickness
Abstract There are some ways to extend the service life of a reinforced concrete structure. This paper focuses on the extension of the service life by treating the surface of reinforced concrete, specifically on the effect of the concrete cover thickness on the surface treatment system efficacy. Thus, chloride migration tests were performed and diffusion chl
REM, Int. Eng. J.. Publicado em: 2016-09
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27. Investigating the Effect of Curing in the Chloride Diffusion Coefficient of Conventional Concrete
Concrete is the most used material in the construction industry worldwide. Built concrete infrastructure is exposed to specific environments conditions during the asset’s life, which impose chemical and physical actions that may lead to premature deterioration. Poor concrete durability and corrosion of reinforcement bars are the primary cause of structural
Mat. Res.. Publicado em: 16/09/2019
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28. Corrodibility and Adherence of Reinforced Concrete Rebars Electroplated with Zinc and Zinc-Nickel Alloys
Reinforced concrete is the main structural material used in the world in the construction of bridges, roads and commercial and residential buildings. One effective method for preventing corrosion of steel reinforcement is the application of galvanic coatings to the reinforcement itself. The present study evaluated the performance of three groups of reinforci
Mat. Res.. Publicado em: 15/07/2019
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29. Mechanical properties of recycled PET fibers in concrete
Fiber-reinforced concrete represents the current tendency to apply more efficient crack-resistant concrete. For instance, polyethylene terephthalate (PET) is a polyester polymer obtained from recyclable bottles; it has been widely used to produce fibers to obtain cement-based products with improved properties. Therefore, this paper reports on an experimental
Materials Research. Publicado em: 31/07/2012
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30. Cast in place concrete residential construction / Construções habitacionais de concreto moldado no local
In a chronological order, the planning, the project and the construction steps of a residential enterprise, containing 351 units, in the city of Campinas, São Paulo, Brazil, are described. Comments, critical analyzes and suggestions are presented for the improvement of the construction process as well. Also, the paper details the structural analysis and dim
Publicado em: 2007
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31. Análise teórica e experimental de vigas de concreto armadas com barras não metálicas de GFRP / Theoretical and experimental analysis of beams reinforced with non metallic GFRP bars
Steel reinforcement replacement aims an increase at the durability of structures with corrosion and electrical magnetic problems. But, inserting a new material at the civil construction industry demands specifications of its composition, behavior and procedures for its utilization. This work is a flexural behavior analysis of reinforced concrete beams reinfo
Publicado em: 2006
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32. 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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33. High performance concrete effects on concrete-steel bond / Efeitos do concreto de alto desempenho na aderencia concreto-aço
This paper presents the study about the bond phenomenon in High Performance Concrete, through the analisys of the flexibility of reinforced concrete beams with HPC. The bond was analyzed under the anchorage and cracking aspects, on longitudinal bars part spliced by transfix. Three types of beam models were analyzed, according to the manner which they were tr
Publicado em: 2005
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34. Optimization of reinforced concrete beams using Solver tool
Resumo Com os avanços nos estudos de análise estrutural, técnicas de otimização passaram a fazer parte do dimensionamento das estruturas de concreto armado. Por meio de tais técnicas, é possível conceber estruturas com seções otimizadas. Assim, o presente estudo tem por objetivo implementar técnicas de otimização, utilizando a ferramenta Solver,
Rev. IBRACON Estrut. Mater.. Publicado em: 23/09/2019
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35. Estudo, considerações e dificuldades na análise não-linear de estruturas de concreto armado através do método dos elementos finitos
In the last few years a numer of finite element constitutive models for reinforced concrete have been proposed in order to correclly describe the behaviour of this material These models try to incorporate aspects such as tensile cracking, crushing, strain softening, concrete steel interaction, tension stiffening, amongst others. Morreover, the success of the
Publicado em: 2000
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36. ANÁLISE EXPERIMENTAL DE VIGAS ARMADAS DE CONCRETO DE ALTO DESEMPENHO COM DIFERENTES TIPOS DE FIBRAS / EXPERIMENTAL ANALYSIS OF HIGH STRENGTH CONCRETE BEAMS REINFORCED WITH DIFFERENT FIBRES
The future is directed to an increasing use of high performance concrete reinforced with fibers. The former due to its improved durability and strength, and the latter due to its ability to give ductility and tenacity to such a fragile product. Recently reviewed draft of the NBR 6118, called new NB1, was published. New constitutive laws for concrete and desi
Publicado em: 2001
