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Sika Galvashield XP embedded galvanic anodes are used in concrete rehabilitation to prevent the formation of new corrosion sites adjacent to completed patch repairs. 


Product Data Sheet 

Sika Galvashield XP consists of a sacrificial zinc core that is activated by the surrounding specially formulated cementitious mortar. The small puck-shaped anode [2.5 in. (64 mm) diameter by 1.1 in. (27 mm) high] is quickly and easily fastened to the exposed reinforcing steel. Once installed, the zinc core corrodes  preferentially to the surrounding rebar, thereby providing galvanic corrosion prevention to the adjacent reinforcing steel.


  • Patch repairs
  • Bridge widening
  • Joints between new and existing concrete
  • Slab replacement
  • Expansion joint repair
  • Repair of epoxy-coated rebar

Features and Benefits

  • Proven technology - supported by independent test program.
  • Focused protection - provides localized corrosion protection where it is needed the most, at the interface of the repair and the remaining contaminated concrete.
  • Economical - low cost method of providing galvanic corrosion prevention to extend the service life of concrete patch repairs.
  • Versatile - effective in chloride-contaminated and carbonated concrete. Can be used for both conventionally reinforced and prestressed or post-tensioned concrete.
  • User friendly - installation is quick and easy, requiring no special equipment or training.
  • Low maintenance – requires no external power source or system monitoring.
  • Measurable – anode performance can be easily monitored if required.
  • Long lasting – 10 to 20 year service life* reduces the need for future repairs.

*As with all galvanic protection systems, service life is dependent upon a number of factors including reinforcing steel density, concrete conductivity, chloride concentration, humidity and anode spacing.

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