Summary
A cathodic protection system is a corrosion prevention method used for reinforcement bars in concrete structures. It aims to protect the steel bars from corrosion, which can weaken the structure over time. There are two main types of cathodic protection systems: impressed current and galvanic (sacrificial anode) systems.
Both types of cathodic protection systems are effective in preventing corrosion of reinforcement bars in concrete structures. The choice between impressed current and galvanic systems depends on factors such as the structure’s size, design and maintenance requirements, as well as budget considerations.
Evaluating the Cost-Effectiveness of Reinforcement Bars in Concrete CP System
Evaluating the cost-effectiveness of cathodic protection for reinforcement bars in concrete involves considering both the initial investment and long-term maintenance costs against the potential benefits gained from corrosion prevention. However, it is crucial to also account for additional factors such as earthquake risks, as corrosion-induced cracking of the concrete can have severe consequences in seismic events. The main points that need to be analysed are:
- Initial Installation Costs
- Maintenance and Operation Costs
- Corrosion Damage Costs
- Structure’s Service Life and Earthquake Vulnerability
- Comparative Analysis
