Prediction of Chloride Penetration in Concrete PDF Download

Author: R. Douglas Hooton
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 438

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Author: Luping Tang
Publisher: CRC Press
ISBN: 0203882415
Category : Technology & Engineering
Languages : en
Pages : 264

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Chloride ingress in reinforced concrete induces corrosion and consequent spilling and structural weakness, and it occurs world-wide and imposes an enormous cost. Yet it can be resisted by using test methods and relevant models for service life prediction.Resistance of Concrete to Chloride Ingress sets out current understanding of chloride transport

Author: Caijun Shi
Publisher: CRC Press
ISBN: 0429881983
Category : Technology & Engineering
Languages : en
Pages : 295

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Book Description
Chloride-induced corrosion is the most important durability issue of reinforced concrete structures, and the prediction and prevention of chloride-induced corrosion has attracted considerable interest all over the world. Given that chloride penetrates through the concrete cover, the issues concerning its transport are crucial. These include testing methods, prediction, and the prevention of ingress. During the transport process, physical and chemical interaction occurs between chloride and cement hydrates, which in turn affects the further transport, so the transport of chloride and these interactions are closely related and underpin our understanding of chloride-induced corrosion in RC structures. This book provides in-depth discussion of chloride transport and its interaction in cement-based materials, and reviews and summarizes the state of the art. The mechanisms and testing methods for chloride transport, chemical interactions of chloride with cement hydrates, chloride binding isotherms, measurement of penetration depths, factors affecting chloride transport, and modeling of chloride transport are discussed in detail. This book serves as a reference for researchers or engineer, and a textbook for graduate students.

Author: Carmen Andrade
Publisher: RILEM Publications
ISBN: 9782912143488
Category : Cholorides
Languages : en
Pages : 466

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Author: Olivier Truc
Publisher:
ISBN: 9789171979339
Category :
Languages : en
Pages : 180

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Author: Dan J. Naus
Publisher: RILEM Publications
ISBN: 9782912143365
Category : Beton yapı
Languages : en
Pages : 408

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Author:
Publisher:
ISBN:
Category : Chlorides
Languages : en
Pages : 314

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In marine environment, the deterioration of concrete structures is mainly due to chloride induced corrosion. With real concrete structures, the deterioration is controlled by the combination of mechanical load and climatic load. The mechanical load results cracks in concrete structures. The cracks accelerate the chloride penetration into concrete structures. As a result, the service life of concrete structures will be reduced considerably. There were many models proposed to predict the deterioration of concrete structures. However, these models are not reliable due to not having simultaneous combination of mechanical and climatic loads. In this research, a model, which simulates the chloride ingress into plain concrete, using different cement types, under flexural cyclic load and tidal environment, was proposed. This model is based on theoretical analysis and experiments of chloride diffusion test, chloride content test and flexural cyclic loading test. Flexural cyclic load is applied from 50% to 80% of to ultimate bending load. Fictitious crack model is adopted to predict fatigue crack growth of plain concrete beam under flexural fatigue. Experimental results show the linear relation between results of short-term and long-term test of chloride diffusion coefficient. Of the four common cement types, Ordinary Portland cement is the best cement type using for concretes in term of the chloride induced corrosion resistance because of the highest capacity to bind chloride ions. The proposed model shows that the flexural cyclic load accelerates chloride penetration into concrete. The higher the flexural load level, SR, the faster chloride penetration occurred. The model predictions fit well with experimental results when the crack density parameter, and the tortuosity parameter, are introduced.

Author: H'mida Hamidane
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659406102
Category :
Languages : en
Pages : 96

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The major durability problem facing concrete structures in cold and marine regions is the corrosion of the reinforcing steel, mainly caused by chloride penetration, which results in the loss of structural integrity or even bearing capacity and subsequently collapse. A method for predicting the chloride ingress into concrete structures, which is the first and main phase of chloride induced reinforcement corrosion, is developed. It couples the problems of heat transfer, moisture transport, chloride diffusion and convection.The model is based on a multiscale two dimensional nonlinear time dependent finite element method. The model is capable of reproducing, with good precision, available test data

Author: Koichi Maekawa
Publisher: CRC Press
ISBN: 0203927206
Category : Technology & Engineering
Languages : en
Pages : 670

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Book Description
Increases in computer power have now enabled engineers to combine materials science with structural mechanics in the design and the assessment of concrete structures. The techniques developed have become especially useful for the performance assessment of such structures under coupled mechanistic and environmental actions. This allows effective management of infrastructure over a much longer life cycle, thus satisfying the requirements for durability and sustainability. This ground-breaking new book draws on the fields of materials and structural mechanics in an integrated way to address the questions of management and maintenance. It proposes a realistic way of simulating both constituent materials and structural responses under external loading and under ambient conditions. Where the research literature discusses component or element technology related to performance assessment, this book uniquely covers the subject at the level of the whole system including soil foundation, showing engineers how to model changes in concrete structures over time and how to use this for decision making in infrastructure maintenance and asset management.

Author: Neal Steven Berke
Publisher: ASTM International
ISBN: 0803114583
Category : Chlorides
Languages : en
Pages : 197

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