Concrete Corrosion Analysis & Testing
The characteristics of uncontaminated concrete naturally inhibit the corrosion process from taking place. However, when the concrete becomes contaminated, those characteristics change and corrosion of the steel readily occurs. That change can be caused by de-icing salts, calcium chloride additives, seawater or industrial chemicals. The resultant corrosion product, or rust, occupies a volume 4-5 times that of the original metal and causes internal stresses that crack the concrete. When the concrete is contaminated at the reinforcing steel level, no traditional repair methods, such as patching, sealers or membranes, will stop the corrosion.
Before any concrete structure is rehabilitated, it is important to determine the condition of the concrete. Concrete distress can be caused by many factors. To help the structural engineer or contractor determine the best rehabilitation plan, MATCOR provides such diagnostic services as: