Cortec MCI®-2000 Migrating Corrosion Inhibiting Admixture for Concrete, Patented

Product Description

MCI®-2000 is a normal set, waterbased, corrosion inhibiting admixture for protection of metallic reinforcement in concrete structures.

When incorporated into concrete, MCI®-2000 forms a protective, monomolecular layer on embedded metals that inhibits corrosion. In new construction, this is quantified by an increase in critical chloride threshold and delayed onset of corrosion, with lower rates once initiated compared to untreated structures. When used with repair mortars and grouts, MCI®-2000 not only protects rebar within the patch; it is also able to migrate into undisturbed concrete adjacent to the repair to protect reinforcement already in place.

Packaging & Storage

Available in 5 gallon (19 L) pails, 55 gallon (208 L) drums, and 275 gallon (1040 L) totes.

To ensure best product performance, store in original packaging, indoors, and out of direct sunlight at 40-100 °F (4-38 °C). Shelf life: 2 Years

How it works

MCI®-2000 is an organic corrosion inhibitor. It is considered ambiodic (mixed), meaning it protects both anodic and cathodic areas within a corrosion cell. MCI®-2000 contains amine alcohol based corrosion inhibitors, which form a protective layer on embedded reinforcement, delaying the onset of corrosion as well as reducing existing corrosion rates.

MCI®-2000 is effective at enhancing the durability and extending the service life of concrete structures exposed to corrosive environments (carbonation, chlorides, and atmospheric attack).

Where to use

• Reinforced concrete including precast, pre-stressed, and post-tensioned structures  
• Corrosive environments including exposure to deicing salts, saline groundwater, airborne chlorides, and carbonation  
• Marine and coastal structures, highways and bridges, parking decks, balconies, pools, concrete tanks, pilings, substructures, piers, pillars, pipes, and utility poles

Advantages

• Lower toxicity and environmental impact than traditional corrosion inhibiting admixtures such as calcium nitrite  
• Low dosage rate with minimal effect on concrete properties (e.g. workability, strength development, air entrainment, etc.)  
• Single dosage rate which is independent of expected exposure to chlorides  
• Ability to migrate through porous substrates (concrete, masonry, limestone, etc.) by capillary action, vapor diffusion, and ionic attraction  
• Field and lab tested worldwide

Dosage

1 pint/cubic yard (0.6 liters/cubic meter)

Application

MCI®-2000 is best added with the mix water into ready-mix concrete at the plant. Alternatively, it can be dosed into the ready-mix truck using portable dosing equipment. Concrete should be mixed thoroughly before placement.