The Embedded Zinc Anode (EZ-Anode) System for the galvanic corrosion protection of steel in concrete:

The EZ-Anode System is a galvanic zinc anode embedded into a solid alumo-silicate based QEZAC electrolyte, applied to the concrete surface. The QEZAC binder is a shrinkage-controlled geopolymeric binder containing admixed Carbon Quantum Dots (CQDs) formulated for Embedding Zinc Anode cement. The admixed Carbon Quantum Dots (CQDs) specifically increase the galvanic activity of the EZ-anode, as well as adhesion strength and ionic conductivity due to their versatile surface and superior electron transfer capability. The QEZAC binder is preferentially applied like a fine putty to uncoated concrete surfaces. It forms a matrix with excellent adhesion to concrete surfaces characterized by a volumetric porosity of > 35 %, high ionic conductivity, and high durability.

As proved by LIPS (laser-induced plasma spectroscopy), the chlorides migrate towards the EZ-anode. They are chemically immobilized in the QEZAC binder matrix as Simonkolleite (zinc-hydroxo-chloride). This natural mineral leads to a one-directional diffusion/migration of the chlorides and results in an efficient galvanic chloride extraction of the concrete overlay.

 Evaluation of Ion Migration by LIPS