Using Embedded Sacrificial Anode Probes in Concrete Repair

摘要

Reinforced concrete exposed to chloride can have severe corrosion. When repairs are made, steel in the repair location often becomes a cathode to the surrounding steel, resulting in corrosion of the bars in the concrete near the patch. One means to mitigate the acceleration of corrosion in the areas surrounding the patch is to embed sacrificial anodes into the patch, which provide corrosion control to the steel near the patch, as well as steel in the patch. This article describes the performance of a zinc-based embedded sacrificial anode. The results show that the sacrificial anode evaluated significantly reduced corrosion.