PREFACE Repair and Rehabilitation of structures is a topic that has gained considerable importance in the past three decades. Building structures for the residential, commercial and infrastructure applications have to be inspected and maintained in order to fulfil the functional purpose of the particular structure. Especially in the case of infrastructure, wherein the capital costs are high, timely repair and rehabilitation is vital to keep the wheels of a country’s logistics chain in good shape. To ensure such tasks are implemented properly, the correct choice of materials and repair methodology along with proper assessment strategies are needed. Repair and Rehabilitation has therefore become a specialized field of expertise based on the wide variety of construction chemicals now available. Target Readership The book covers in full the topics prescribed for the Master’s Degree students of Engineering. However, given the fact that a vast number of building structures require urgent attention to implement proper repair strategies, a wide gamut of the topics are covered to facilitate a single knowledge source for consultants and academics alike. Book Material The Book starts with a short historical perspective on the type and load path of traditional building structures, materials used and a comparison made with the present. Causes, nature and types of deterioration of structures are discussed at length for structural and non -structural elements. Damage assessment methods, both qualitative and quantitative methods are dealt, starting with visual inspection evaluation procedures, data collection for building structures with particular emphasis on earthquake damaged structures. A comprehensive list of materials with their basic physical and chemical characteristics used in construction-chemical admixtures, coatings, non-metallic FRP reinforcements, anchor fasteners and materials for seismic base isolation are listed. Repair methodology is explained in a detailed manner for various types of buildings structures including underwater repair. Case studies of Repair and Restoration of some buildings and Infrastructure projects including Dams including the Takami and Makubetsu Dams in Japan, Morandi Bridge Italy, and prestressed concrete footbridgein Florida, are enumerated to present the practical assessment and repair methodologies adopted. The special topics covered in this book are Structural health monitoring and Demolition techniques, Repair and restoration of Heritage structures with typical case studies such as the leaning Tower of Pisa etc. Lastly, Research topics in this emerging area of repair are suggested. R N Krishna A R Santhakumar

More than a third of America's bridges are considered substandard--either structurally deficient, functionally obsolete or both. Offers first-rate, practical guidance regarding the inspection and rehabilitation of aging bridge infrastructure including all elements involving structure, various materials and design types. Features seismic retrofit and coverage of environmental issues. Each chapter is written by an authority on the subject. Contains top-quality, detailed line illustrations plus photographs of actual rehab projects.

Master's Thesis from the year 2011 in the subject Engineering - Civil Engineering, grade: 10, , language: English, abstract: In the present study, the failure of cable stayed bridge across Chambal River (Kota) will be discussed. The causes of its collapse and detail study of the cable stayed bridge cross Chambal River will be done. The static and dynamic modeling of cable stayed bridge is also done. At the end, the measure to repair and rehabilitation cable stayed is discussed. Cable stayed bridge has become one of the most frequently used bridge system throughout the world because of their aesthetic appeal, structural efficiency, enhanced stiffness compared with suspension bridge, ease of construction and small size of substructure. Over past 40 years, rapid developments have been made on modern cable stayed bridge. With main span length increasing , more shallow and slender stiffness girders used in modern cable stayed bridge, the safety of whole bridge under service loading and environmental dynamic loading such as impact , wind and earthquake loadings , presents increasingly important concern in design , construction and service In India the first cable stayed bridge was AKKAR BRIDGE, SIKKIM (1985) Constructed by Gammon India limited. The other cable stayed bridge are Vidhya sagar Setu (1992) Kolkata, Bandra – worli sea link (Mumbai), Cable stayed bridge across Chambal river (Kota) etc.

Evaluation, repair and rehabilitation of bridges are increasingly important topics in the effort to deal with the deteriorating infrastructure. For example, in the United States about 40 percent of the nation's 570,000 bridges are classified, according to the Federal Highway Administra tion's (FHW A) criteria, as deficient and in need of rehabilitation and replacement. In other countries the situation is similar. FHW A estimates the cost of a bridge replacement and reha bilitation program at 50 billion dollars. The major factors that have contributed to the present situation are: the age, inadequate maintenance, increasing load spectra and environmental contamination. The deficient bridges are posted, repaired or replaced. The disposition of bridges involves clear economical and safety implications. To avoid high costs of replacement or repair, the evaluation must accurately reveal the present load carrying capacity of the struc ture and predict loads and any further changes in the capacity (deterioration) in the applicable time span. Accuracy of bridge evaluation can be improved by using the recent developments in bridge diagnostics, structural tests, material tests, structural analysis and probabilistic methods. There is a need for an international exchange of advanced experience to increase the research effi ciency. The Workshop is organized on the premise that the exchange of existing American and European experience in the area of bridge evaluation, repair and rehabilitation is beneficial for both parties involved.

TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 353: Inspection and Maintenance of Bridge Stay Cable Systems identifies and explains various inspection and maintenance techniques for bridge stay cable systems. It discusses both short- and long-term approaches. The report information on methods for inspections and assessments, including nondestructive testing and evaluation procedures; repair and retrofit; methods for control of cable vibrations, including rainwind vibrations; stay cable fatigue and failure; effectiveness of various inspection and repair methods; limitations of available technologies; and trends and recommendations for future study.

Bridge Maintenance, Safety, Management and Life-Cycle Optimization contains the lectures and papers presented at IABMAS 2010, the Fifth International Conference of the International Association for Bridge Maintenance and Safety (IABMAS), held in Philadelphia, Pennsylvania, USA from July 11 through 15, 2010.All major aspects of bridge maintenance, s