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Question posted - April 2 to April 8, 2012:

How do you protect concrete against microbiologically influenced corrosion?


Selected Answers

From Kumar Kolur Vadivelu of Sadara Chemical Company on April 3, 2012:
     To protect from MIC, the concrete surface can be coated with coal tar epoxy paint or 100% solid urethane coating or another suitable coating system.

From Glenn Summers of ConselcoR, Inc. on April 3, 2012:
     Without this penetrating sealer to prevent migration of internal chemistry out of the matrix to collect at the coating/concrete surface interface, the bond of that coating is at risk. If a coating is breached, MIC has an unprotected surface to attack!

From Glenn Summers of ConselcoR, Inc. on April 2, 2012:
    I use a penetrating sealer that enters the Gel-Pore/Capillary system of the concrete. This product forms a solid inside to protect it. Not only are contaminants kept from entering the matrix after an application, but also this product  does not allow the internal chemistry of a concrete to migrate out to the surface and atmosphere. This is especially usefull in obtaining longevity and adhesion of any coating later applied. No more pesky blistering of a coating! In the case of Thiobacillus bacteria, the bacteria may still be present in the environment; however, the resultant sulphuric acid has no affect on the concrete surface once I have protected and stabilized the concrete.


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Tagged categories: Concrete; Corrosion protection


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