Reinforced Concrete
Mostrando 1-12 de 472 artigos, teses e dissertações.
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1. A CONSTITUTIVE MODEL FOR FIBER REINFORCED CONCRETE / UN MODELO CONSTITUTIVO PARA CONCRETO CON FIBRAS / UM MODELO CONSTITUTIVO PARA CONCRETO COM FIBRAS
Along the past forty years, an increasing interest on composite materials formed by the addition of discrete fibers to a concrete matrix is being observed. These composites are known as fiber reinforced concretes. The interest on the use of fibers as reinforcement is justified by their significative contribution to concrete thoughness, as they reduce the bri
Publicado em: 1998
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2. Structural Behavior of SFRC Beams strengthened with GFRP Laminates: An Experimental and Analytical Investigation
ABSTRACT This paper presents the experimental results of a reinforced concrete beams (RC) strengthened with internal steel fibers (SF) and external glass fiber reinforced polymer laminates (GFRP). The research work studied the load carrying capacity, deformation, crack width and ductility of the reinforced concrete beams strengthened with different steel fib
Braz. arch. biol. technol.. Publicado em: 23/01/2017
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3. Corrosion of steel reinforced concrete in the tropical coastal atmosphere of Havana City, Cuba
The influence of chloride deposition rate on concrete using an atmospheric corrosion approach is rarely studied in the literature. Seven exposure sites were selected in Havana City, Cuba, for exposure of reinforced concrete samples. Two significantly different atmospheric corrosivity levels with respect to corrosion of steel reinforced concrete were observed
Quím. Nova. Publicado em: 2013
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4. Cálculo de esforços e deslocamentos em estruturas de pisos de edifícios, considerando-se a influência das tensões cisalhantes / Determination of displacements and internal forces in reinforced concrete building floor structures, considering the shear stress influence.
In this work, Reinforced concrete grids are analysed, assuming non-linear models based on the damage theory, and also incorporating into shear deformations. The proposed CEB-158 and the NBR-6118 models for reinforced concrete members are discussed, as well as the elastoplastic model assumed for the reinforcement. The Timoshenko s beam theory is studied and a
Publicado em: 2000
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5. INTERACTIVE GRAPHIC TOOL FOR THE DESIGN OF REINFORCED CONCRETE BEAMS / FERRAMENTA GRÁFICO-INTERATIVA PARA O PROJETO DE VIGAS DE EDIFÍCIOS EM CONCRETO ARMADO
The present work describes the development of an interactive graphics tool for modeling and design reinforced concrete building beams, following the new Brazilian code NBR 6118, 2003. The graphics tool is based on the FTOOL software, which is an educational tool for two- dimensional frame structural behavior. The design method used for reinforced concrete se
Publicado em: 2004
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6. Mechanical characterization of fiber reinforced Polymer Concrete
A comparative study between epoxy Polymer Concrete plain, reinforced with carbon and glass fibers and commercial concrete mixes was made. The fibers are 6 mm long and the fiber content was 2% and 1%, respectively, in mass. Compressive tests were performed at room temperature and load vs. displacement curves were plotted up to failure. The carbon and glass fi
Materials Research. Publicado em: 2005-09
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7. Pilares de concreto armado em situação de incêndio submetidos à flexão normal composta. / Reinforced concrete columns in fire under uniaxial bending.
According to Brazilian Codes, reinforced concrete structures must be verified under high temperatures, in order to assure the load bearing capacity to allow the safe evacuation of the users and the fire fighting and to reduce the fire spread to other compartments. For reinforced concrete structures, the columns must be analyzed carefully. The significant red
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/05/2011
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8. Ductility of reinforced lightweight concrete beams and columns
This paper presents analytical and experimental results on ductility of reinforced lightweight concrete beams and columns in the form of moment curvature relationships, and compares the response with that of normal reinforced concrete members. The experimental part is limited to flexural tests on beams made of lightweight concrete. The latter is obtained wit
Lat. Am. j. solids struct.. Publicado em: 2014-12
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9. Compression specific toughness of normal strength steel fiber reinforced concrete (NSSFRC) and high strength steel fiber reinforced concrete (HSSFRC)
Compression toughness tests were carried out on concrete cylinders reinforced with three different aspect ratios of hooked-end steel fibers 60, 75, and 83 and six different percentages of steel fibers 0.5, 1.0, 1.25, 1.5, 1.75, and 2.0% by volume of concrete. The w/c ratio used for the normal strength steel fiber reinforced concrete mixes (NSSFRC) was 0.55,
Materials Research. Publicado em: 03/06/2011
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10. Simulação numérica do comportamento pós-fissuração de vigas de concreto armado pelo método dos elementos finitos / Numerical simulation for the post-cracking behavior of reinforced concrete beams by finite element method
This work presents a numerical method for the evaluation of internal forces and displacements in reinforced concrete straight beams considering cracking and the influence of longitudinal and transversal reinforcement. In order to simulate cracking behavior, the elasticity module of the cracked element is reduced depending on the dimensions of the finite elem
Publicado em: 2007
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11. Estudo teórico-experimental da influência das cargas cíclicas na rigidez de vigas de concreto armado / Theoretical and experimental analysis of cyclic loads on stiffness of the reinforced concrete beams
The main purpose of this research is to analyze the experimental and theoretical behavior of reinforced concrete beams, in order to quantify the stiffness loss, by calculating successive deflections during the cyclic loads application, under service loads. The emphasis of this research is the numerical analysis. The modeling of steel-concrete interface is do
Publicado em: 2005
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12. Modelagem do comportamento estrutural estático e dinâmico de lajes nervuradas de concreto armado. / Modeling the static and dinamic structural behavior of reinforced concret slabs.
Several researchers have studied the use of reinforced concrete ribbed slabs in civil engineering structural systems that can be viable when the technical and economical point of view is considered. For this reason, a lot of papers were published in the last years based on the experimental and numerical analysis of this slab type. In this context, several sl
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/01/2012
