This thoroughly updated edition provides a comprehensive overview of the techniques involved in testing concrete in structures. It discusses established techniques and new methods, showing the potential for future development, striking a balance between research and industrial practice. This edition will provide a thorough update reflecting worldwide developments. Particular areas identified for enhancement include approaches to insitu strength assessment in the light of changes to Standards and practice, and the use of test combinations. Detail is provided about specific methods to inform engineers of their advantages and limitations, with guidance on planning and interpretation of test programmes and with illustrative appendices. The book is principally intended for the non-specialist civil or structural engineer to help them plan and commission test programs and assess the results with confidence. It is also a valuable reference work for concrete technologists, designers, and advanced students.