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Modeling Of Chloride Penetration Into Concrete Structures Under Flexural Cyclic Load And Tidal Environment
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Book Synopsis Modeling of Chloride Penetration Into Concrete Structures Under Flexural Cyclic Load and Tidal Environment by :
Download or read book Modeling of Chloride Penetration Into Concrete Structures Under Flexural Cyclic Load and Tidal Environment written by and published by . This book was released on 2008 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis PRO 38: 3rd International RILEM Workshop on Testing and Modelling the Chloride Ingress into Concrete by : Carmen Andrade
Download or read book PRO 38: 3rd International RILEM Workshop on Testing and Modelling the Chloride Ingress into Concrete written by Carmen Andrade and published by RILEM Publications. This book was released on 2004 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis PRO 19: 2nd International RILEM Workshop on Testing and Modelling the Chloride Ingress into Concrete by : Carmen Andrade
Download or read book PRO 19: 2nd International RILEM Workshop on Testing and Modelling the Chloride Ingress into Concrete written by Carmen Andrade and published by RILEM Publications. This book was released on 2001 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Resistance of Concrete to Chloride Ingress by : Luping Tang
Download or read book Resistance of Concrete to Chloride Ingress written by Luping Tang and published by CRC Press. This book was released on 2011-10-06 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Book Synopsis Transport and Interactions of Chlorides in Cement-based Materials by : Caijun Shi
Download or read book Transport and Interactions of Chlorides in Cement-based Materials written by Caijun Shi and published by CRC Press. This book was released on 2019-07-26 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis International Review of Chloride Ingress Into Structural Concrete by : P. B. Bamforth
Download or read book International Review of Chloride Ingress Into Structural Concrete written by P. B. Bamforth and published by Thomas Telford. This book was released on 1997-04-10 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: The deterioration of reinforced and prestressed concrete structures resulting from the corrosion of the steel reinforcement is a worldwide problem. As long as salt is used for de-icing or structures are built near the coast, chloride will continue to be a primary factor in compromising the durability of a structure. This report deals specifically with the ingress of salt from the environment, which can lead to severe corrosion of reinforcement. It reviews the international state-of-the-art with regard to chloride ingress into concrete and, in particular, considers: - The influence of concreting materials, mix design, curing and environment - methods for the detection of chloride ingress in structures - techniques used for studying chloride ingress
Book Synopsis The Penetration of Chloride in Concrete Subject to Wetting and Drying by : S. Bioubakhsh
Download or read book The Penetration of Chloride in Concrete Subject to Wetting and Drying written by S. Bioubakhsh and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Corrosion of reinforcing steel arising from contamination by chlorides from de-icing salt is the major cause of deterioration of concrete bridges in the UK and many parts of the world. Those elements of structures exposed to cyclic wetting and drying (BS 8500-1, XD3) have proven to be the most vulnerable to corrosion damage. Penetration of chloride in concrete exposed to wet/dry environments occurs by diffusion and absorption. Diffusion is a relatively slow and quite well understood process. However, absorption is a relatively rapid transport mechanism and there is a lack of understanding of the role of this mechanism on chloride ingress as studies on chloride penetration in concrete exposed to wet/dry cycles ignore the effect of this mechanism on chloride ingress. In addition, chloride penetration prediction models are mostly based on Fick's laws of diffusion, ignoring the effect of absorption on chloride ingress. The aims of this work are: to develop a more detailed understanding of chloride penetration in concrete subjected to wet/dry cycles and identify the effect of absorption on chloride ingress; to produce reliable numerical model for chloride penetration due to this transport process; to recommend values of the minimum thickness of concrete cover to steel reinforcement relevant to this service environment or identify exposure conditions which require alternative methods of protection. The absorption test method used in this work is a cyclic regime as developed by TRL [Emerson and Butler, 1997] to represent site conditions. Concrete cubes, 100 mm3, were subjected to wet/dry cycles with the suction surface in contact with NaCl solution. Drying temperature was found to be the most critical factor influencing sorptivity and depth of chloride penetration. The salt solution concentration also had a significant effect on chloride penetration via the apparent surface chloride content. Moreover, the depth of chloride penetration was found to be proportional to the square root of exposure time. Two approaches to predict chloride penetration in concrete exposed to wet/dry cycling are proposed. The first is based on the relationship obtained in the present study between equilibrium sorptivity of concrete, Se, depth of chloride penetration, d, and time, t, which leads to the following general expression, where A, B and C are constants for a given cement type and salt solution concentration d = A×√t + B×Se + C The second method is simply based on the well known solution of Fick's second law but utilises values of apparent diffusion coefficient appropriate to this transport process. The first model suggests that, initially, absorption has a significant effect on chloride ingress but that diffusion dominates long-term behaviour. The outputs from these models suggest that the thicknesses of concrete cover in structures exposed to class XD3 should be higher than those currently recommended in BS 8500-1 (2006). However, there are practical limits as to what can be specified for thickness of concrete cover and therefore alternative methods of protection such as coatings or cathodic protection should be adopted when the concrete cover does not provide sufficient protection.
Book Synopsis A Model For Chloride Penetration In Concrete by : H'mida Hamidane
Download or read book A Model For Chloride Penetration In Concrete written by H'mida Hamidane and published by LAP Lambert Academic Publishing. This book was released on 2013 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Book Synopsis Advances in Construction Materials and Management by : Aneetha Vilventhan
Download or read book Advances in Construction Materials and Management written by Aneetha Vilventhan and published by Springer Nature. This book was released on with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Corrosion in Reinforced Concrete Structures by : H Böhni
Download or read book Corrosion in Reinforced Concrete Structures written by H Böhni and published by Elsevier. This book was released on 2005-01-20 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reinforced concrete has the potential to be very durable and capable of withstanding a variety of adverse environmental conditions. However, failures in the structures do still occur as a result of premature reinforcement corrosion. In this authoritative book the fundamental aspects of this complex process are analysed; focusing on corrosion of the reinforcing steel, and looking particularly, at new scientific and technological developments. Monitoring techniques, including the newly developed online-monitoring, are examined, as well as the numerical methods used to simulate corrosion and perform parameter studies. The influence of composition and microstructure of concrete on corrosion behaviour is explored. The second half of the book, which deals with corrosion prevention methods, starts with a discussion on stainless steels as reinforcement materials. There are comprehensive reviews of the use of surface treatments and coatings, of the application of corrosion inhibitors and of the application of electrochemical techniques. In each case the necessary scientific fundamentals are explained and practical instances of use are looked at. This is an invaluable guide for engineers, materials scientists and researchers in the field of structural concrete. Fundamental aspects of corrosion in concrete are analysed in detail Explores how to minimise the effects of corrosion in concrete Invaluable guide for engineers, materials scientists and researchers in the field of structural concrete
Book Synopsis Pore Structure of Cement-Based Materials by : Kalliopi K. Aligizaki
Download or read book Pore Structure of Cement-Based Materials written by Kalliopi K. Aligizaki and published by CRC Press. This book was released on 2005-09-22 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pore Structure of Cement-Based Materials provides a thorough treatment of the experimental techniques used to characterize the pore structure of materials. The text presents the principles and practical applications of the techniques used, organized in an easy-to-follow and uncomplicated manner, providing the theoretical background, the way to analyze experimental data, and the factors affecting the results. The book is the single comprehensive source of the techniques most commonly used for pore structure analysis, covering simple techniques like mercury intrusion porosimetry and water absorption, to the more sophisticated small-angle scattering and nuclear magnetic resonance. The book is an essential reference text for researchers, users, and students in materials science, applied physics, and civil engineering, who seek a deep understanding of the principles and limitations of the techniques used for pore structure analysis of cement-based materials.
Book Synopsis Performance-Based Specifications and Control of Concrete Durability by : Hans Beushausen
Download or read book Performance-Based Specifications and Control of Concrete Durability written by Hans Beushausen and published by Springer. This book was released on 2015-09-24 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work gives an overview of significant research from recent years concerning performance-based design and quality control for concrete durability and its implementation. In engineering practice, performance approaches are often still used in combination with prescriptive requirements. This is largely because, for most durability test methods, sufficient practical experience still has to be gained before engineers and owners are prepared to fully rely on them. This book, compiled by RILEM TC 230-PSC, is intended to assist efforts to successfully build the foundation for the full implementation of performance-based approaches through the exchange of relevant knowledge and experience between researchers and practitioners worldwide.
Book Synopsis Corrosion of Steel in Concrete by : Kyösti Tuutti
Download or read book Corrosion of Steel in Concrete written by Kyösti Tuutti and published by . This book was released on 1982 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Life-Cycle of Engineering Systems: Emphasis on Sustainable Civil Infrastructure by : Jaap Bakker
Download or read book Life-Cycle of Engineering Systems: Emphasis on Sustainable Civil Infrastructure written by Jaap Bakker and published by CRC Press. This book was released on 2016-11-18 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the papers presented at IALCCE2016, the fifth International Symposium on Life-Cycle Civil Engineering (IALCCE2016), to be held in Delft, The Netherlands, October 16-19, 2016. It consists of a book of extended abstracts and a DVD with full papers including the Fazlur R. Khan lecture, keynote lectures, and technical papers from all over the world. All major aspects of life-cycle engineering are addressed, with special focus on structural damage processes, life-cycle design, inspection, monitoring, assessment, maintenance and rehabilitation, life-cycle cost of structures and infrastructures, life-cycle performance of special structures, and life-cycle oriented computational tools. The aim of the editors is to provide a valuable source for anyone interested in life-cycle of civil infrastructure systems, including students, researchers and practitioners from all areas of engineering and industry.
Book Synopsis Advanced Concrete Technology by : Zongjin Li
Download or read book Advanced Concrete Technology written by Zongjin Li and published by John Wiley & Sons. This book was released on 2011-01-11 with total page 698 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past two decades concrete has enjoyed a renewed level of research and testing, resulting in the development of many new types of concrete. Through the use of various additives, production techniques and chemical processes, there is now a great degree of control over the properties of specific concretes for a wide range of applications. New theories, models and testing techniques have also been developed to push the envelope of concrete as a building material. There is no current textbook which brings all of these advancements together in a single volume. This book aims to bridge the gap between the traditional concrete technologies and the emerging state-of-the-art technologies which are gaining wider use.
Book Synopsis Corrosion of Steel in Concrete Structures by : Amir Poursaee
Download or read book Corrosion of Steel in Concrete Structures written by Amir Poursaee and published by Woodhead Publishing. This book was released on 2023-02-20 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Essential reading for researchers, practitioners, and engineers, this book covers not only all the important aspects in the field of corrosion of steel reinforced concrete but also discusses new topics and future trends. Theoretical concepts of corrosion of steel in concrete structures, the variety of reinforcing materials and concrete, including stainless steel and galvanized steel, measurements and evaluations, such as electrochemical techniques and acoustic emission, protection and maintenance methods, and modelling, latest developments, and future trends in the field are discussed. Comprehensive coverage of the corrosion of steel bars in concrete, investigating the range of reinforcing materials, and types of concrete Introduces the latest measuring methods, data collection, and advanced modeling techniques Second edition covers a range of new, emerging topics such as the concept of chloride threshold value, concrete permeability and chloride diffusion, the role of steel microstructure, and innovations in corrosion detection devices
Download or read book ACI Materials Journal written by and published by . This book was released on 1989 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:
