Download or read book Mechanisms of Chemical Degradation of Cement based Systems written by K.L. Scrivener and published by CRC Press. This book was released on 1997-04-17 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deterioration of cement-based materials is a continuing problem, as it results in the substantial shortening of the lives of conventional concrete structures. The main costs result from poor performance and the need for early repair. With more advanced applications, where very long service lives are essential, such as the storage of nuclear waste, an understanding of the degradation processes in order to predict long term performance is very important. this book forms the proceedings of the latest Symposia at the Materials Research Society Autumn meeting in Boston.
Download or read book Chemical Degradation of Concrete written by Vagn Johansen and published by . This book was released on 1995 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Durability of Concrete and Cement Composites written by Chris L. Page and published by Elsevier. This book was released on 2007-06-30 with total page 415 pages. Available in PDF, EPUB and Kindle. Book excerpt: Whilst most structures made using concrete and cement-based composites have not shown signs of premature degradation, there have been notable exceptions. In addition, there is increasing pressure for new structures to remain in serviceable condition for long periods with only minimal maintenance before being recycled. All these factors have highlighted the issues of what affects the durability of these materials in different circumstances and how material properties can be measured and improved. Durability of concrete and cement composites summarises key research on these important topics. After an introductory chapter, the book reviews the pore structure and chemistry of cement-based materials, providing the foundation for understanding the particular aspects of degradation which are discussed in the following chapters. These include dimensional stability and cracking processes, chemical and microbiological degradation of concrete, corrosion of reinforcing and prestressing steels, deterioration associated with certain aggregates, effects of frost and problems involving fibre-reinforced and polymer-cement composites. With its distinguished international team of contributors, Durability of concrete and cement composites is a standard reference for all those concerned with improving the service life of structures using these materials. Analyses a range of materials such as reinforced steel in concrete, pre-stressed concrete and cement composites Discusses key degradation phenomena such as cracking processes and the impact of cold weather conditions A standard reference for those concerned with improving the service life of structures using concrete and cement based composites
Download or read book Physio chemical Degradation of Concrete written by MD Aminul Islam and published by . This book was released on 2018 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Concrete structures experience damage due to Sulfate Attack (SA) and Freeze-Thaw (F-T) in cold regions containing ample amount of sulfate species. The combined effect of SA and F-T is a multiscale multiphysics damaging process for cementitious materials involving complicated chemical reactions and phase transition inside concrete pores. This thesis is a compilation of two theoretical models describing the SA induced damage in an unsaturated cementitious medium and damage due to the combined effect of SA and F-T. The classical theory of phase change and a diffusion-reaction process is utilized in the development of the models. The validity of the proposed models is tested by comparing the numerical results against existing experimental data for concrete mortars. It is found that the numerical results agree very well with the experimental results. These coupled mathematical models can be applied to assess the effect of ambient sulfate concentration on the degradation of concrete, the pore-size distribution (PSD), hysteresis of solidification and melting of water in concrete pores and change of porosity due to SA and F-T. Most importantly the proposed mathematical model is capable of explaining the damage extent of concrete under coupled conditions that are somewhat difficult and time consuming to be evaluated by contemporary experimental methods."--Boise State University ScholarWorks.
Download or read book Sulfate Attack on Concrete written by J. Marchand and published by CRC Press. This book was released on 2001-10-11 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sulfate Attack on Concrete provides a comprehensive reference to this important subject. It covers: a short history of concrete deterioration due to sulfate attack, the origin of sulfates in concrete, the importance of appropriate concrete processing, forms and physical-chemical mechanisms of concrete deterioration due to sulfates, preventative mea
Download or read book Investigation Into Possible Methods to Screen for Chemical Degradation of Pervious Concrete Due to Common Deicers written by Trace William Sendele and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Damage to Concrete Structures written by Geert De Schutter and published by CRC Press. This book was released on 2017-06-29 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: Serious degradation mechanisms can severely reduce the service life of concrete structures: steel reinforcement can corrode, cement matrix can be attacked, and even aggregates can show detrimental processes. Therefore, it is important to understand how damage can occur to concrete structures and to appreciate the timing of the actions leading to damage. Damage to Concrete Structures summarizes the state-of-the-art information on the degradation of concrete structures, and gives a clear and comprehensive overview of what can go wrong. Offering a logical flow, the chapters are ordered according to the chronological timing of the actions leading to concrete damage. The author explains the different actions or mechanisms in a fundamental manner, without too many physical or chemical details, to provide greater clarity and readability. The book describes the different causes of damage to concrete, including inappropriate design, errors during execution, mechanisms occurring during hardening of concrete, and actions or degradation mechanisms during service life (hardened concrete). The degradation mechanisms are illustrated with numerous real-world examples and many drawings and photographs taken of actual structures. Written as a textbook for students as well as a reference for professionals, this easy-to-comprehend book gives readers a deeper understanding of the damage that can occur to concrete during the construction process and service.
Download or read book Failure Distress and Repair of Concrete Structures written by Norb Delatte and published by Elsevier. This book was released on 2009-10-26 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding and recognising failure mechanisms in concrete is a fundamental pre-requisite to determining the type of repair, or whether a repair is feasible. This title provides a review of concrete deterioration and damage, as well as looking at the problem of defects in concrete. It also discusses condition assessment and repair techniques.Part one discusses failure mechanisms in concrete and covers topics such as causes and mechanisms of deterioration in reinforced concrete, types of damage in concrete structures, types and causes of cracking and condition assessment of concrete structures. Part two reviews the repair of concrete structures with coverage of themes such as standards and guidelines for repairing concrete structures, methods of crack repair, repair materials, bonded concrete overlays, repairing and retrofitting concrete structures with fiber-reinforced polymers, patching deteriorated concrete structures and durability of repaired concrete.With its distinguished editor and international team of contributors, Failure and repair of concrete structures is a standard reference for civil engineers, architects and anyone working in the construction sector, as well as those concerned with ensuring the safety of concrete structures. - Provides a review of concrete deterioration and damage - Discusses condition assessment and repair techniques, standards and guidelines
Download or read book The Deterioration of Concrete and Reinforced Concrete Due to Chemical and Natural Agencies written by N. Stutterheim and published by . This book was released on 1954 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Materials Science of Concrete Special Volume written by Jan P. Skalny and published by John Wiley & Sons. This book was released on 2001-04-28 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides broad coverage of key issues related to the role of calcium hydroxide in cements and concrete. It contains critical topics such as the physicochemical role calcium hydroxide plays in hydration and deterioration of cementing properties as well as the implications of the presence of calcium hydroxide on the future of Portland cement, blended and specialty cements, and ecology of cement production.
Download or read book Concrete Durability written by Thomas Dyer and published by CRC Press. This book was released on 2014-05-01 with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written specifically for the young professional and addressing a growing need for a long service life with minimal maintenance, Concrete Durability takes a whole new look at the whole-life performance of structures. This text examines physical and chemical issues that can threaten the durability of concrete. It explores available options for achiev
Download or read book Corrosion of Steel in Concrete written by Luca Bertolini and published by John Wiley & Sons. This book was released on 2013-02-26 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: Steel-reinforced concrete is used ubiquitously as a building material due to its unique combination of the high compressive strength of concrete and the high tensile strength of steel. Therefore, reinforced concrete is an ideal composite material that is used for a wide range of applications in structural engineering such as buildings, bridges, tunnels, harbor quays, foundations, tanks and pipes. To ensure durability of these structures, however, measures must be taken to prevent, diagnose and, if necessary, repair damage to the material especially due to corrosion of the steel reinforcement. The book examines the different aspects of corrosion of steel in concrete, starting from basic and essential mechanisms of the phenomenon, moving up to practical consequences for designers, contractors and owners both for new and existing reinforced and prestressed concrete structures. It covers general aspects of corrosion and protection of reinforcement, forms of attack in the presence of carbonation and chlorides, problems of hydrogen embrittlement as well as techniques of diagnosis, monitoring and repair. This second edition updates the contents with recent findings on the different topics considered and bibliographic references, with particular attention to recent European standards. This book is a self-contained treatment for civil and construction engineers, material scientists, advanced students and architects concerned with the design and maintenance of reinforced concrete structures. Readers will benefit from the knowledge, tools, and methods needed to understand corrosion in reinforced concrete and how to prevent it or keep it within acceptable limits.
Download or read book Lea s Chemistry of Cement and Concrete written by Peter Hewlett and published by Butterworth-Heinemann. This book was released on 2019-03-06 with total page 898 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lea's Chemistry of Cement and Concrete, Fifth Edition, examines the suitability and durability of different types of cements and concretes, their manufacturing techniques and the role that aggregates and additives play in achieving concrete's full potential of delivering a high-quality, long-lasting, competitive and sustainable product. - Provides a 60% revision over the fourth edition last published in 2004 - Includes updated chapters that represent the latest technological advances in the industry, including, but not exclusive to the production of low-energy cements, cement admixtures and concrete aggregates - Presents expanded coverage of the suitability and durability of materials aggregates and additives
Download or read book Mechanism of Cement Paste Degradation Due to Chemical and Physical Processes written by Gerard Gabriel Litvan and published by . This book was released on 1986 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Concrete in the Marine Environment written by P.K. Mehta and published by CRC Press. This book was released on 1991-12-03 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concrete has clearly emerged as the most economical and durable material for the building of the vast majority of marine structures. Reinforced concrete too has overcome the technological problems making it a suitable material for the construction of advanced marine structures such as offshore drilling platforms, superspan bridges and undersea tunn
Download or read book Concrete Pavements written by Ahmed Ghazy and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: With intensive use of chloride-based ice control chemicals for winter maintenance operations (de-icing, anti-icing and pre-wetting), concrete pavements may undergo significant alterations resulting in adverse consequences on their engineering properties. Formation of complex salts (oxychlorides) has been suspected for causing chemical degradation of concrete pavements, but without direct microstructural evidence due to their instability. Thus, an effort was made to elucidate the damage mechanisms of field and laboratory concrete exposed to the most widely used chloride-based de-icing salts (individual and combined) under different exposure conditions. This thesis aimed at capturing/linking the formation of these complex phases, if any, with the physico-mechanical properties of real cementitious systems/concretes and proposing their roles in the damage process. Also, this thesis explored the potential benefits of supplementary cementitious materials (SCMs: fly ash and nanosilica) and portland limestone cement (PLC) to mitigate this type of damage. The results indicated that the deterioration of concrete in the field is explained by a combination of physical and chemical aspects, due to the interaction of salts, freezing/thawing (F/T) and wetting/drying (W/D) cycles with the hydrated paste. Formation of acicular flattened blades of 3- and 5-form magnesium oxychloride (MOX) and tiny fibrous crystals, as well as subhedral pseudo-hexagonal calcium oxychloride plates (COX), were found in the deteriorated concrete specimens, depending on the type of solution. The overall results indicated that the restrictive limits on fly ash in concrete serving in chloride-rich environments may produce less durable concrete than alternative noncompliant mixtures with higher fly ash dosages. Moreover, the performance of the concrete was much enhanced by an innovative SCM such as nanosilica. PLC mixtures also exhibited better resistance to de-icing salts due to dual physical and chemical actions of limestone in the matrix. This thesis also aimed at introducing adaptive neuro-fuzzy inference systems to model the behavior of the concrete mixtures under various exposure regimes combined with de-icing salts. Finally, the thesis aimed at developing durable repair materials (nano-modified fly ash concrete) and enhancing the overall process of rehabilitating concrete pavements to achieve optimum performance, longevity and life-cycle cost effectiveness.
Download or read book Environmental Deterioration of Materials written by A. Moncmanová and published by WIT Press. This book was released on 2007 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: The increasing level of pollution in the environment not only harms the natural world, but also accelerates the deterioration and corrosion of materials used in technical work, as well as objects with historical or artistic value. It is impossible to eliminate the numerous sources of this negative effect, so there are currently increased efforts towards improved preservation, which require a thorough knowledge of the causes of the degradation of individual materials.This book deals with the fundamental principles underlying environmental degradation of widely-used and economically important construction materials such as metals, stone, brick, concrete, timber, cast iron, steel, copper alloys and aluminium. It features information on the methods of deterioration, as well as general information on the economic impact of the damaging processes, and offers some suggested fundamental protection techniques for buildings, industrial and agricultural facilities, monuments and culturally important structures.This book will be of interest to materials and corrosion engineering experts, civil and environmental engineers, students and practicing professionals, designers, architects and restoration engineers. It will also be a useful tool for managers from various sectors of industry, for auditors of environmental management systems, and it can be used as a complementary course book for university students.
