Sika Ferrogard Patch

Discrete anode for corrosion mitigation of incipient anode adjacent to patch repairs.

Product Description

Sika FerroGard Patch is a discrete sacrificial anode applied to patch repairs on
reinforced concrete structures, which are corroding as a result of chloride ingress or
concrete carbonation.

Sika FerroGard Patch anodes are placed within the parent concrete. Protective
current is thus delivered directly to the steel outside the patch, which is at greatest
corrosion risk as opposed to clean steel within the patch repair.

In addition, there is no compromise in the quality of the concrete repair material that
can be used in reinstatement, as is typically the case for sacrificial anodes placed
within patch repairs. The insulating properties of bonding primers prevent their use with traditional patch
anodes – however, as Sika FerroGard Patch is placed in the parent concrete,
primers may be used which lead to an enhanced repair bond (when needed).

Uses

• Installed outside of the spall repair zone into contaminated host concrete, Sika
  FerroGard Patch anodes redress the electrochemical imbalance induced
  through removal of the corrosion process from steel in the patch.
• Applied to reinforced concrete structures such as bridges, car parks, coastal
  structures, industrial structures and residential high-rise.
• Coastal reinforced concrete structures both in and above the tidal zone.

Characteristics / Advantages

• Sika FerroGard Patch anodes corrode preferentially to the surrounding steel,
  protecting it from further corrosion damage.
• Protects against incipient anode attack outside of the repair zone at the periphery of the repair.
• No long-term maintenance costs.
• Strengthens passive film.
• Titanium fixings eliminate attack by salt.
• No rapid dissolution of activating components.
• Rapid installation—no additional breakout.
• Bonding primers for steel and concrete can be used.
• High-resistivity repair mortars can be used.
• Performance can be monitored.
• Cost-effective corrosion control solution.

Product specification sheet

Manufacturer

Sika Australia

As a specialty chemical supplier for the building and construction industry, Sika Australia prides itself on being technically driven and project-motivated. Product line features high-quality concrete admixtures, specialty mortars, sealants and adhesives, damping and reinforcing materials, structural strengthening systems, industrial