Cortec MCI® Fibers

Product description

MCI Fibers are mono-filiment polypropylene-based fibers containing Migratory Corrosion Inhibitors (MCI).

MCIs protect reinforcing steel, galvanized steel and other metals embedded in concrete from corrosion induced by carbonation, chloride and atmospheric attack. When incorporated into the concrete mix, MCIs form a corrosion inhibiting, protective layer on metals. When used with repair mortars and grouts, MCIs will migrate toward the rebars, providing effective corrosion protection.

The propylene based MCI Fibers also add mechanical benefits. Shrinkage cracking decreased 66% while residual strength doubled compared to concrete without fibers

Where to use

MCI Fibers are recommended for:

• All reinforced, precast, prestressed, post-tensioned or marine concrete structures  
• Steel-reinforced concrete bridges, highways and streets exposed to corrosive environments (carbonation, deicing salts and atmospheric attack)  
• Parking decks, ramps and garages • Concrete piers, piles, pillars, pipes and utility poles 
• Restoration and repair of all reinforced concrete commercial and civil engineered structures

Advantages

• Shrinkage cracking reduction of 66%, compared to concrete without fibers  
• Residual strength doubled, compared to concrete without fibers
• Slow release, long lasting MCI corrosion inhibitors  
• Offers engineers, owners, contractors, DOTs and government agencies a time proven corrosion inhibiting technology that will extend the life of reinforced concrete structures  
• Protects against the harmful effects of corrosion even in the densest concrete  
• Will migrate to adjacent areas to protect surrounding metals  
• Required dosage is not affected by chloride concentration  
• Does not contain calcium nitrite  
• Non-flammable and environmentally friendly  
• Concentrated for cost effectiveness on all projects

Application

MCI Fibers can be added to concrete at the ready-mix plant, directly to the ready-mix truck drum or to portable mixers.

Dosage

Add to concrete mix, repair mortar or grout at 1 1/2 lbs per 1 cubic yard (910 g per 1 cubic meter).

Packaging

MCI Fibers are available in 5 lb (2.3 kg) and 50 lbs (23 kg) bags, and 100 lbs (45 kg) drums.

Store in a sealed container in a dry warehouse.