Cortec MCI®-2005 AL, Patented

Product Description

MCI ®-2005 AL is a normal set, water-based, organic, corrosion inhibiting admixture for protection of metallic reinforcement in concrete structures. MCI®-2005 AL is designed for use when freezing temperatures or very high temperatures are expected during transit or storage, as well as for applications where the presence of sodium should be minimized.

When incorporated into concrete, MCI®-2005 AL 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 subsequent reduction in corrosion rates when corrosion does initiate. When used with repair mortars and grouts, MCI®-2005 AL not only protects rebar within the patch, it is 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®-2005 AL is an organic corrosion inhibitor. It is considered ambiodic (mixed), meaning it protects both anodic and cathodic areas within a corrosion cell. MCI®-2005 AL contains a blend of amine salts of carboxylic acids and other inorganic inhibitors, which form a protective layer on embedded reinforcement delaying the onset of corrosion as well as reducing existing corrosion rates.

MCI®-2005 AL 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

• Biobased (20%)  
• Earns credit towards LEED certification  
• Lower toxicity and environmental impact than traditional corrosion inhibiting admixtures such as calcium nitrite  
• Low dosage rate with minimal effect on concrete properties (i.e. 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  
• Meets all requirements of ASTM C1582  
• MCI®-2005 AL can be reconstituted by mixing well after exposure to freezing temperatures.  
• Complies with CSA S413, Section C1.2, for corrosion inhibiting

Dosage

Add MCI®-2005 AL to concrete mix at the rate of 1.5 pts/yd3 (1L/m3).

Application

MCI®-2005 AL 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.