SO2 ion permeability process on concrete company, interact with the hydration of cement production, causing Zhang to bloom the volume and structure of destruction (also known as eatworn sulfate). the penetration of Cl-ion: the process of penetration of chloride corrosion is not directly (except to break the protection membrane of the surface layer of reinforcement steel corrosion process and promote development), chloride acts as a catalyst for the process of corrosion of reinforced concrete. However, the mechanism of corrosion caused by chloride ion chemical carbonates in that process other Ionic chlorides penetrate through layers of concrete and Ferro-attack protection even when the pH of the mixture remains at a high level (12-13). There are four mechanisms of chloride ion penetration through concrete protective layer: the capillary suction, osmosis due to high concentrations of chloride ion concentration on the surface of reinforced concrete, penetrates below the surface tension and pressure shifting due to the difference in voltage. the process of microbial corrosion, mechanical erosion due to wave erosion, wash.
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