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Principles of Cathodic Protection and Its Application to Steel in Concrete Steel in concrete is usually protected against corrosion by passivation of the steel arising from the high alkalinity of the pore solutions within the concrete. A stable oxide layer is formed on the steel surface which prevents the anodic dissolution of iron. The necessity for additional protective measures arises if this stable oxide layer is rendered unstable (if depassivation occurs) due to the ingress of chlorides to the steel/concrete interface or carbo

The Notices on Electrical Installation for Cathodic Protection System All electrical installation works shall be undertaken in accordance with international (or other applicable national) electrical safety standards. Below are some notices on electrical installation for cathodic protection system. Note 1: The electrical power supply for the cathodic protection system may be provided by transformerrectifier(s) powered by an electrical supply from a mains voltage distribution system. The direct current and monitoring cables of

How is the MMO Anode Installed in Cathodic Protection? Before anode installation, the surface should be well prepared. The concrete surfaces intended to receive installation of anode material, e.g. conductive coatings or activated titanium mesh within a cementitious overlay, shall be prepared so as to present, as a minimum, a clean, non‑friable surface and in order that the substrate to overlay adhesion. Cathodic protection conductive coatings generally require a minimum of preparation to leave a maximum of cement paste and mini

What Should You Be Aware of Before Choosing a Proper Portable Reference Electrode? In order to determine the performance of the cathodic protection, a monitoring system shall be incorporated. The monitoring system shall incorporate sensors at representative points over the entire structure/anode zone to be protected. The cathodic protection system performance shall be determined by measuring the steel/concrete potential, using reference electrodes. Below factors should be noted for an appropriate monitoring system 1. Suitable r