Product Data Sheet Show all documents
Sika® Galvashield® T2

Sika® Galvashield® T2

Self-Powered Dual Phase Hybrid Anode Series

Sika® Galvashield® T2 is a second generation hybrid anode system used to control corrosion in reinforced concrete structures. Sika® Galvashield® T2 is a Type 2 anode for embedment within drilled holes in sound concrete. Sika® Galvashield® T2 combines the high level performance of an impressed current electrochemical treatment system with the longterm maintenance-free capabilities of an alkali-activated galvanic cathodic prevention system. The single-unit system does not require complex wiring or an external DC power supply (temporary or permanent). When installed, the inbuilt impressed current component provides an initial phase of high charge density that passivates active corrosion (Phase 1). Then, the anode automatically switches to a cathodic prevention phase, which maintains steel passivity and provides longterm, maintenance-free corrosion protection (Phase 2). The anode spacing and parameters of pre-treatment are customised by Vector Corrosion Technologies based upon the specific condition of the structure and are in conformance with the principals of ISO BS EN 12696:2016.  

• Proven Technology - ICCP electrochemical treatment and alkali-activated galvanic anode technologies fused together into a single unit.
• Simple Installation - Sika® Galvashield® T2 is a single unit hybrid system with no external power requirements.
• Fit & Forget - Sika® Galvashield® T2 operates automatically once installed, reducing access requirements and therefore time and cost.
• Long Lasting - Provides corrosion protection for up to 30+ years without the need for maintenance.* Phase 1 can be designed to be repeated at any time if desired.
• Measurable Performance - While not critical for the long term operation of the system, the site performance can be measured and validated if required.
Product Data Sheet Show all documents

Usage

  • Multi-story Carparks
  • Bridge Decks, Columns & Beams
  • Marine Piers and Wharfs
  • Balconies

Advantages

• Proven Technology - ICCP electrochemical treatment and alkali-activated galvanic anode technologies fused together into a single unit.
• Simple Installation - Sika® Galvashield® T2 is a single unit hybrid system with no external power requirements.
• Fit & Forget - Sika® Galvashield® T2 operates automatically once installed, reducing access requirements and therefore time and cost.
• Long Lasting - Provides corrosion protection for up to 30+ years without the need for maintenance.* Phase 1 can be designed to be repeated at any time if desired.
• Measurable Performance - While not critical for the long term operation of the system, the site performance can be measured and validated if required.

Packaging

20 units per box

Product Details

Product Information

Shelf Life

12 months

Storage Conditions

Store in dry conditions in the original unopened box. Avoid extremes of temperatures and humidity.

Dimensions

Unit

Description

Unit Size Diameter x Length

Minimum Hole Size Diameter x Depth

Sika® Galvashield® T2-100

2nd Generation Hybrid System

46 x 100 mm

50 x 130 mm

Sika® Galvashield® T2-135

2nd Generation Hybrid System

29 x 135 mm

32 x 165 mm

Sika® Galvashield® T2-C

2nd Generation Hybrid System

Custom

Custom
Technical Information

Design Considerations

Level of Protection

Level of Protection

Description

Sika Galvashield® Fusion T2

Corrosion Prevention

Mitigates initiation of new corrosion activity

Yes

Corrosion Control

Reduces on-going corrosion activity

Yes

Cathodic Protection

Reduce or eliminate on-going corrosion activity

Yes

Application

Application steps

APPLICATION

Summary Installation Procedure
Sika® Galvashield® T2 anodes shall be installed on a grid pattern as specified in the design document. Using a rebar locator, locate existing steel and mark areas to drill anode installation holes to avoid cutting steel. When possible, anodes should be installed in the centre of a reinforcing grid or a minimum of 100 mm away from steel.  Verify continuity of steel with a multi-meter.

Drill holes as per the design to accommodate the anodes. Pre-wet the holes and the anodes to a saturated surface dry condition, then install with Sika® Galvashield Embedding Mortar. Mix one 20 kg bag of mortar with 3.2 to 3.7 litres of potable water. Add the powder to the water and mix with a drum or paddle mixer until a smooth consistency is achieved. Do not use partial bags.

Place the mixed Sika® Galvashield Embedding Mortar into the bottom 2⁄3 of each hole and slowly press the anode into the mortar, allowing the mortar to fill the annular space ensuring there are no air voids between the anode and the parent concrete. The minimum cover depth over the anodes shall be 20 mm.

Anodes may be individually connected to the steel reinforcement or may be connected in a circuit as per the design. Saw cut a groove approximately 5 mm wide by 12 mm deep into the concrete to interconnect the rebar connection holes and anode holes.

Connect the anodes to the interconnecting header wire with the supplied connectors (wire and connectors are available as the Vector Anode Connection Kit). Verify continuity between anode locations and rebar connections with a multi-meter. Connect each end of the circuit to the steel at the rebar connection points.

Place wires into grooves and top off anode holes and saw cuts flush to the concrete surface with Sika® Galvashield Embedding Mortar.

Sika® Galvashield Embedding Mortar should be wet cured or cured with a curing compound and protected from traffic for 24 hours.

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