What is ConmicShield®?

ConmicShield® is a liquid additive for the long term MIC (microbiologically induced corrosion) protection of concrete pipe, manholes and wet wells in heavy sulfide conditions common in sanitary sewers.

How does it work?

ConmicShield® molecularly bonds to the concrete particles and impregnates the entire concrete matrix. Protection is throughout the entire thickness and not just on the surface. It is an EPA registered anti-bacterial agent clinically proved to prevent colonization of Thiobacillus bacteria that produce sulfuric acid in sanitary sewer systems. When there are no bacteria, there can be no corrosion.

Why should we use ConmicShield®?

• Using ConmicShield® is a single step process precisely dosed under factory controlled conditions for consistent quality control/quality assurance;
• Using ConmicShield® requires no special tools, forms, training or equipment
• ConmicShield® is in the product.  It is not a coating so it will not delaminate, disbond, peel, pinhole or “wear off” over time.
• ConmicShield® is environmentally friendly – it allows an engineer to “go green”.
• Using ConmicShield® is much less expensive than coatings and liners thereby providing a great value to the owner.  
• ConmicShield® fortified structures last for the life of the concrete.

How much does it cost?

Generally, it adds only $3 to $4 per square foot of interior surface even though it is throughout the entire thickness. Actual costs must be obtained from the pipe or manhole producer and costs will vary by size and wall thickness. By comparison, the higher costs of coatings and linings are raised even higher because the contractor must do additional work in the field such as welding, spark-testing, joint coating and touch up after the pipe is buried.

How does ConmicShield® compare in price to embedded plastic liners such as T-Lock®, Stud-Liner® and Agru Sure-Grip®? How does it compare in cost to adhesive-applied linings such as Linabond® and to polymer coatings?

ConmicShield® is less than half the cost of embedded plastic liners and coatings and less than one-third the cost of Linabond®. Plastic liners and coatings require additional work in the field once the manhole is installed to weld the joints, to spark test and to correct the inevitable pinhole defects therefore the cost directly from the precaster is NOT the complete cost to the owner. Coatings and liners are subject to field damage and wear which lead to failures (sometimes catastrophic) if routine inspection and repairs are not made. This results in a much shorter service life.