Concrete Preservation Duoguard 500
Duoguard 500 is a single anode unit which is installed into pre-drilled holes in reinforced concrete structures to protect them from further corrosion induced deterioration. Duoguard 500 offers the following beneficial features:
- Rapid inhibition of steel corrosion
- Targeted application reduces costs
- Short treatment minimizes structure's downtime during application
- Performance can be easily monitored
- No long term maintenance
- Cost effective corrosion control solution
- Impressed current can be reconnected at any time as a back up option
Duoguard 500 protects steel reinforced concrete structures against corrosion and has the potential to operate for up to 50 years (dependent on local chloride concentration, concrete properties, humidity and temperature).
Duoguard 500 is a hybrid treatment – it uses both an Impressed Current and a Galvanic Anode protection phase. The idea is to use the advantages of Impressed Current by applying it for one week in order to completely stop the corrosion and then change the system into a Galvanic Anode system to maintain the passive condition of the reinforcement steel and prevent any further corrosion. This simple principle is based on data obtained from 15 years of electrochemical treatment of concrete structures and offers a simple solution to on-going corrosion problems. The requirement for a permanent power supply is eliminated and Duoguard offers the advantages of a galvanic anode requiring minimal maintenance.