A new hybrid repair method that combines the characteristics of two effective approaches for preventing salt damage in concrete structures: external power supply type cathodic protection and impressed current anode method.
Effective measures against salt damage can be implemented through two phases: the external power supply phase (de-salting and re-alkalization) for improving the environment around the rebar, and the electrolytic anode phase that utilizes the differences in ionization tendencies of zinc and iron to long-term suppress rebar corrosion.
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basic information
Shape/Composition: Dot-shaped zinc unit with resin cap Binding Wire: High-purity titanium wire Packaging: 25 pieces/plastic tab Filling Material: Dedicated backfill material (in 310ml cartridge)
Price range
Delivery Time
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Applications/Examples of results
Purpose: A technology to suppress corrosion caused by salt damage and other factors in concrete structures. Corrosion protection for areas that are difficult to maintain. Track Record: Port structures (power transmission tower foundations) - For repair design and other inquiries, please contact us.
Detailed information
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[External Power Supply (Dechlorination and Re-Alkalization) Phase] By connecting the anode material inserted into the drilled holes in the concrete structure to the positive side of a DC power supply and the rebar to the negative side, current is passed to move chloride ions towards the anode side, thereby improving the environment around the rebar.
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[Electrolytic Anode Phase] After a specified period of electrification, by disconnecting the DC power supply and directly connecting the rebar to the anode material, the difference in ionization tendencies between zinc and iron helps to long-term suppress the corrosion of the rebar.
Line up（5）
| Model number | overview |
|---|---|
| Duo Guard 175 | Zinc amount 62g Dimensions φ20mm×L42mm |
| Duo Guard 350 | Zinc amount 120g Dimensions φ20mm×L77mm |
| Duo Guard 500 | Zinc amount 180g Dimensions φ20mm×L115mm |
| Duo Guard 750 | Zinc amount 285g Dimensions φ20mm×L170mm |
| Duo Guard 1000 | Zinc amount 380g Dimensions φ20mm×L223mm |
catalog（4）
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Company information
Our division is engaged in repair work, reinforcement work, and repair design. Due to recent changes in the natural environment, the durability of structures has significantly deteriorated, leading to an increase in the number of structures requiring repairs. Additionally, with changes in seismic standards, there has been a rapid increase in reinforcement work for existing structures. The era is shifting from scrap and build to maintenance.