Reinforced Concrete Durability
Mostrando 1-12 de 27 artigos, teses e dissertações.
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1. 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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2. Durability of Concrete After Fire Through Accelerated Carbonation Tests
Degradation of mechanical properties and durability of reinforced concrete structures occur when they are subjected to fire situations, depending on the characteristics of the material, fire duration and the ways of fire extinguishing. Mechanical properties such as compressive strength, tensile strength and elasticity modulus are some examples of typically a
Mat. Res.. Publicado em: 18/07/2019
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3. 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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4. Evaluation of reinforced concrete structural durability in the post-occupation phase - A case study in Novo Hamburgo/RS
Abstract Researches on building performance have been developed over time. The Brazilian Performance Standard - NBR 15575 - deals with the issues of durability applied to residential buildings, establishing criteria and parameters to classify the systems into minimum, intermediate and higher performance levels. In relation to the service life, studies are al
REM, Int. Eng. J.. Publicado em: 2019-03
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5. Analysis of strengthening procedures of reinforced concrete highway bridges: a brazilian case study
Resumo O sistema rodoviário federal brasileiro é constituído em grande parte por pontes construídas antes de 1984. Assim, essas pontes possuem geometria e capacidade de carga incompatíveis com o tráfego atual. Nesse cenário, o objetivo deste estudo foi a avaliação dos procedimentos de alargamento e reforço empregados em uma ponte de concreto armado
Rev. IBRACON Estrut. Mater.. Publicado em: 2019-02
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6. Efeito da adição de fibras híbridas na durabilidade de compósitos cimentícios avançados em ambientes úmidos e agressivos
ABSTRACT Reactive powder concrete (RPC) is one type of advanced cementitious composite that has been increasingly used. Its high mechanical strength enables the application of the composite in bolder structures. Considering its recent history of use, there is a lack of knowledge about this materials durability. Therefore, this paper aimed to evaluate the beh
Matéria (Rio J.). Publicado em: 18/10/2018
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7. Monitoring reinforcement corrosion of concretes designed for nuclear facilitie
ABSTRACT The facilities designed for the peaceful activities of nuclear energy are made with different materials, among them, reinforced concrete. This material, in addition to being structural, is a barrier for isolation and confinement from the environment of the radioactive materials. One of its degradation mechanisms is the corrosion of the reinforcement
Matéria (Rio J.). Publicado em: 19/07/2018
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8. Tensile Behaviour and Durability Issues of Engineered Cementitious Composites with Rice Husk Ash
ABSTRACT The Engineered Cementitious Composites (ECC) is a special type of High Performance Fibre Reinforced Cementitious Composite (HPFRCC) characterized by a high tensile ductility with a 2% maximum volume of micro fibres. ECC has a tensile strain-hardening performance that leads to multiple cracking behaviour, thus providing the high ductility to the conc
Matéria (Rio J.). Publicado em: 20/07/2017
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9. Experimental Investigation on Self-Compacting Self-Curing Concrete Incorporated with the Light Weight Aggregates
ABSTRACT Self-Compacting Concrete (SCC) flows around obstructions by its self-weight to fill entirely and self-consolidate (without any need for vibration), without any part of disconnection and chunking. The eradication of the need for consolidation leads to better quality concrete and substantial improvement of running conditions. The fresh state of SCC mi
Braz. arch. biol. technol.. Publicado em: 23/01/2017
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10. Mechanical and Durability Performance of Polyacrylonitrile Fiber Reinforced Concrete
In this paper, the impact toughness, autogenous shrinkage, chloride penetration resistance, permeability resistance and abrasion resistance performance of prepared concrete reinforced with Polyacrylonitrile fiber (PAN fiber) were researched. The PAN fiber volume concentration percentages of cement were 0, 0.5%, 1.0%, 1.5% and 2.0%, respectively. The results
Mat. Res.. Publicado em: 03/11/2015
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11. Stochastic Analysis of Flexural Strength of RC Beams Subjected to Chloride Induced Corrosion
Importance of consideration of chloride induced corrosion in service life design of reinforced concrete (RC) structures situated in marine environment is well known. This paper attempts to provide, within the framework of Monte Carlo Simulation, methodologies for durability based service life design of RC members. A methodology using fragility curves is prop
Mat. Res.. Publicado em: 03/11/2015
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12. Estudo de métodos e medidas auxiliares para o controle da resistência à carbonatação de concretos estruturais de cimento Portland. / Study of auxiliary methods and measurements to control carbonation resistance of Portland cement structural concrete.
A durabilidade das estruturas de concreto armado deve ser alcançada, entre outros fatores, pela adequação do concreto frente ao meio ambiente para proteger as armaduras pelas características da camada de cobrimento. Assim, concretos precisam ser corretamente especificados no projeto estrutural e ter a sua qualidade controlada durante a produção e aplic
Publicado em: 2010