There are many ways to slow down the corrosion process in reinforced concrete, however cathodic protection (CP) has been demonstrated to be one of the most effective technologies to stop corrosion in existing reinforced concrete structures.
To design cost effective CP systems and to investigate stray current corrosion better design tools are needed.
In this case the likelihood of stray current corrosion in a concrete railway tunnel is investigated.
A model was developed to simulate the negative effect of stray currents on the reinforcement.
Stray current was predicted and quantified in the case resulting from a system failure between the grounding system and the shielding grid
The methodology provides a tool to assess the effectiveness and sustainability of CP solutions as applied to reinforced concrete structures.