Cathodic protection of steel-reinforced concrete structures - results from 15 years' experience

摘要

The first cathodic protection system for steel-reinforced concrete structures in Germany was installed in 1986. The system was switched off after 15 years because of traffic-related reconstruction. This article describes the long-term behavior of potential, current density, temperature dependency, and durability. Investigation of the conductive polymer/copper core anode revealed that irreversible changes had substantially decreased the polymer's conductivity, limiting its functionality.