Zinc Sheet Anode or ZincLayerAnode (ZLA) is a sacrificial galvanic anode specifically designed for giving electrochemical protection, known as cathodic protection, for the prevention of corrosion of the concrete steel reinforcement.
It is applied upon the concrete surface. The zinc-layer is electrically linked with the steel reinforcement. In this way the electric-circuit is completed because electric current flows through the adhesive layer and concrete by means of ionic conductance (both materials are so-called electrolytes). Since zinc has a natural potential which is more electronegative than the steel reinforcement, the zinc becomes the anode after installation and forms a new corrosion cell in which the reinforcement is forced to be the cathode.
In this way the corrosion process within the concrete is transferred to the zinc-layer avoiding futural spalling and cracking of the concrete.
ZLA is available in rolls 250mm width x 25 meters long . Thickness 0,25mm