Concrete steel, which is part of reinforced concrete structures and buildings, is already affected by rust during storage or transport. Although the spread of rust is slowed by the concrete itself, it continues to spread, causing subsequent degradation of the concrete and damage to the structure and appearance of the buildings.

The CREPEX® coating system meets the requirements of TP 136 and is suitable for the protection of all types of concrete steel; the pH of CREPEX® and the alkaline environment prevent the formation of uniform and intergranular corrosion, which occurs when the pH of the environment changes and the concrete degrades. It also prevents the formation of pitting corrosion, which occurs in the presence of chlorides and their salts, mainly caused by weathering. TP 136 prescribes a minimum coating film thickness of 130 µm. CREPEX® coating provides the above protection with a film thickness of 10-40 µm, which can be formed in one coat or spray. To achieve the prescribed thickness, the application can be repeated or the topcoat can be applied subsequently, as for conventional structures that are not encased in concrete.

Corroded metal parts of damaged structures can also be treated with CREPEX® after the moisture in the damaged concrete has been removed, thus preventing corrosion and its spread. Mixing CREPEX® into the new layer of concrete to be applied to the treated area during rehabilitation will also prevent degradation and moisture damage. CREPEX® is designed to be water-based and approximately 80% of its volume is dispersion, which is commonly mixed into concrete.