Stops corrosion and extends structural life
- 2nd generation targeted protection
- 20 – 50 years protection
- Benefit of both impressed current and galvanic cathodic protection, no permananet power source required
- Manufactured in the UK to ISO9001
Our unique DuoGuard range of discrete anodes features innovative dual technology to arrest steel reinforcement corrosion within 7 days. DuoGuard™ is installed into concrete structures to stop reinforcing steel corrosion caused by chloride salts and carbonation. It can be used to protect contaminated but unspalled concrete saving the time and cost of replacing the concrete material. With a long system lifetime the DuoGuard™ anode provides a cost effective, maintenance free method of corrosion protection.
Problem
DuoGuard™ combats the two main types of corrosion found in reinforced concrete structures.
– Carbonation induced – exposure to atmospheric carbon dioxide combined with prolonged contact to sufficient moisture and oxygen can leave steel vulnerable to corrosion.
When either or both of these take hold in a structure, this can lead to the concrete cracking and being displaced as the steel reinforcement expands and pushes out. The corrosion and its effects often propagate very quickly – so it is crucial to be proactive in assessing and fixing the issue.
DuoGuard™ Anodes
DuoGuard™ anodes feature the new generation electro-chemical technology to stop reinforcing steel corrosion caused by chloride salts and carbonation and can be designed to 50 years.
Benefits
- Compact sizes
- Installed in the cover zone where there is congested steel
- No long term power supply needed
- Can be Re-Energised for extra protection
- Large charge capacity > 375 to 750 kC
- High impressed current density >1000 mA/m2*
- Long life with minimal long-term costs
- Rapidly halts steel corrosion to eliminate further concrete spalling
- Suitable for carbonated and chloride contaminated structures
- Activation Paste
- Measurable performance
- Connected is series to create protection zones
- Up to 50-year service life*
Duoguard Hybrid Strip Anode System
Duoguard Hybrid Strip system is a dual technology hybrid strip anode utilising a sacrificial metal in both an impressed current and galvanic anode role. Initially an impressed current is driven from the Duoguard Strip anode to the steel using a temporary power supply and corroding sites on the steel are moved to the surface of the installed strip anode. Duoguard Strip system provides increased current distribution and is used to provide corrosion protection to sound but contaminated reinforced concrete elements to minimise maintenance and extend the life of structures.
| Product | Thickness | width | length | Zinc Weight |
| Duoguard Strip -250 | 5.5mm | 20mm | 250mm | 140g |
| Duoguard Strip – 500 | 5.5mm | 20mm | 500mm | 280g |
