Durability Enhancement for New and Deteriorating Infrastructure

Galvex Anode


A self-contained, durability enhancement system, for atmospherically exposed reinforced concrete.


GALVEX anodes contain Zinc Layer Anode (ZLA) technology, consisting of a high purity zinc foil, complete with an ion-conductive, auto moistening, humectant/activator layer which is encapsulated within an ion-conductive geopolymer grout.


When connected to the reinforcement and encapsulated in the concrete, the zinc foil corrodes at the humectant/activator layer and provides galvanic cathodic protection to the surrounding embedded reinforcement.


The anodes are supplied in two shapes:

  • discrete elongated anode with centralised, perforated galvanised steel strip, designed to be installed directly onto the reinforcement

  • discrete cylindrical anode with centralised galvanise steel wire, designed to be installed into drilled holes within existing concrete



Where installed with monitoring facilities, GALVEX can be monitored and evaluated against the cathodic protection criteria listed within BS EN ISO 12696.

For existing structures, the anodes are either positioned below the existing reinforcement, following damaged concrete removal or drilled into the concrete around the perimeter of the repair, the anodes are fixed directly to the exposed reinforcement, using the galvanised steel strip or wire connection and are encased in the concrete repair material as part of the concrete repair process.


For new structures, the anodes are cable-tied directly to the exposed reinforcement and connected using the galvanised steel strip or wire connection and are then encased in the structural concrete as part of the construction process.


GALVEX do not contain any chlorides or chemicals which are harmful to the structure, personnel or the environment.



GALVEX is suitable for protecting atmospherically exposed reinforced concrete structures, suffering from chloride or carbonation induced reinforcement corrosion and resulting concrete deterioration.


Used in conjunction with concrete repairs, it provides structure life extension and deterioration control of existing damaged structures. Used locally to provide patch repair enhancement and prevent incipient anode formation, for concrete patch repairs, in chloride contaminated concrete, or when incorporating old chloride contaminated structures into a new build.


For severely deteriorated structures requiring extensive concrete repairs, it can be used globally across the structure to provide structure life extension and durability control.


For new structures, it can be used to provide durability enhancement or deterioration prevention, when installed in the early life of a structure, to prevent the onset of corrosion related deterioration, at high risk areas, like construction joints, construction defect areas or areas of low cover.