This book provides a comprehensive overview of the use of fiber-reinforced polymer (FRP) composites in strengthening reinforced concrete (RC) structures. It is authored by J. G. Teng, J. F. Chen, S. T. Smith, and L. Lam from various institutions in China and the UK. The content is divided into several chapters covering different aspects of FRP-strengthened RC structures. Chapter 1 introduces FRP composites, their production methods, mechanical properties, resins, and performance in strengthening structures. It also discusses partial safety factors and concludes with key findings. Chapter 2 focuses on the bond strength between FRP and concrete, discussing test methods, failure modes, existing models, and a new model proposed by Chen and Teng. It concludes with design recommendations. Chapter 3 addresses flexural strengthening of beams, detailing various strengthening methods, failure modes, and debonding strength models. It includes design recommendations and various analytical and experimental models. Chapter 4 covers shear strengthening of beams, discussing failure modes, existing shear strength models, and a new model proposed by Chen and Teng. It provides design recommendations and compares them with experimental results. Chapter 5 discusses flexural strengthening of slabs, detailing methods, failure modes, and design recommendations for one-way and two-way slabs. Chapter 6 examines the strengthening of axially and eccentrically loaded columns, discussing various strengthening methods, failure modes, and strength models for FRP-confined concrete columns. Chapter 7 focuses on the seismic retrofit of columns, discussing typical failure modes, retrofit methods, ductility, ultimate conditions, and design recommendations. The book serves as a valuable resource for engineers and researchers in the field of structural engineering, providing detailed information on the application and design of FRP composites in strengthening RC structures.This book provides a comprehensive overview of the use of fiber-reinforced polymer (FRP) composites in strengthening reinforced concrete (RC) structures. It is authored by J. G. Teng, J. F. Chen, S. T. Smith, and L. Lam from various institutions in China and the UK. The content is divided into several chapters covering different aspects of FRP-strengthened RC structures. Chapter 1 introduces FRP composites, their production methods, mechanical properties, resins, and performance in strengthening structures. It also discusses partial safety factors and concludes with key findings. Chapter 2 focuses on the bond strength between FRP and concrete, discussing test methods, failure modes, existing models, and a new model proposed by Chen and Teng. It concludes with design recommendations. Chapter 3 addresses flexural strengthening of beams, detailing various strengthening methods, failure modes, and debonding strength models. It includes design recommendations and various analytical and experimental models. Chapter 4 covers shear strengthening of beams, discussing failure modes, existing shear strength models, and a new model proposed by Chen and Teng. It provides design recommendations and compares them with experimental results. Chapter 5 discusses flexural strengthening of slabs, detailing methods, failure modes, and design recommendations for one-way and two-way slabs. Chapter 6 examines the strengthening of axially and eccentrically loaded columns, discussing various strengthening methods, failure modes, and strength models for FRP-confined concrete columns. Chapter 7 focuses on the seismic retrofit of columns, discussing typical failure modes, retrofit methods, ductility, ultimate conditions, and design recommendations. The book serves as a valuable resource for engineers and researchers in the field of structural engineering, providing detailed information on the application and design of FRP composites in strengthening RC structures.