ZLA is a zinc sacrificial sheet anode which is applied directly upon the concrete surface for corrosion control of steel in concrete. The application is realised by an ion-conductive adhesive which is pre-applied. ZLA is supplied with the applied adhesive and is ready to use. The protective PET-liner is removed prior to application of the zinc sheet. The current required for cathodic protection is provided by the galvanic link of the steel reinforcement and the zinc sheet. No external power is required.