Cathodic Protection of Steel Reinforcement

This chapter discusses cathodic protection as a highly effective approach to combat corrosion of steel reinforcement in concrete structures. It thoroughly examines the considerations involved in designing cathodic protection systems specifically tailored for reinforced concrete applications. The role and significance of sacrificial anodes and impressed cathodic protection in protecting the steel reinforcement are explored in depth. The concept of cathodic current requirement protection, which plays a crucial role in determining the optimal amount of current necessary for effective corrosion prevention, is extensively discussed. Moreover, the chapter investigates the occurrence of peeling off or cathodic disbonding, which can occur under specific conditions during cathodic protection. The monitoring of cathodic protection systems and the potential challenges associated with stray current and current disturbance are also carefully examined. Additionally, the chapter introduces anodic protection as a viable alternative for corrosion prevention in reinforced concrete. By thoroughly exploring these topics, this chapter offers a comprehensive overview of cathodic protection, providing valuable insights and knowledge for engineers, researchers, and professionals engaged in corrosion prevention within the field of concrete structures.