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MCI® Concrete Admixtures
What is MCI®?
Enhance Durability & Extend Service Life of Concrete Structures
Lower toxicity and environmental impact than traditional corrosion inhibiting admixtures (calcium nitrite)
Significantly lower dosage rates than competitors (pints vs. gallons)
Dosage rates independent of chloride levels
Biobased/Renewable
(amine carboxylates derived from corn)
Non-set accelerating
Ability to migrate through porous substrates (concrete, masonry, limestone, etc.) by capillary action, vapor diffusion and ionic attraction
Minimal effect on concrete mix properties (workability, strength, air entrainment, etc.)
Admixture Selection
MCI® Liquid Admixtures
MCI® liquid admixtures have set dosage rates that are independent of chloride exposure levels. They come in normal set time and delayed set time formulations. Pure inhibitor dosage rates range between 16-24 ounces (1 – 1.5 pints) per cubic yard (0.6-1 liter per cubic meter) depending on product selected. Dual functioning admixtures such as MCI®-2007 superplasticizer with MCI®, will have dosage rates that are comparable to the pure inhibitor plus the additional component they are blended with.
MCI® Powder Admixtures
MCI® powder admixtures have set dosage rates that are independent of chloride exposure levels. They come in normal set time and delayed set time formulations. Pure inhibitor dosage rates are generally one pound per cubic yard (0.6 kg per cubic meter). Grenades are powder pre-measured into water soluble packaging, sized for the area they will treat (cubic yard, cubic meter, or bag of repair mortar). Dual functioning admixtures such as MCI®-2012 Integrapel™ water repellant with MCI®, will have higher dosage rates that are comparable to the pure inhibitor plus the additional component they are blended with.
Specialty Admixtures
Specialty admixtures pair our pure MCI® with an additional feature such as super plasticizing or water repellency OR provide our standard admixtures in a convenient to use package size (MCI® Grenades).
Competitor Comparison
When building new concrete structures, ready mix suppliers, project owners, and specifying engineers naturally want to use the product that works best for the job. So, in the case of corrosion inhibitors, what are the defining features of how MCI® admixtures line up against the competition?
| MCI® vs. Competitor Admixtures | |||
| Feature | MCI®-2005/MCI®-2005 NS | Competitors | |
| Calcium Nitrite | Amine Alcohol | ||
| Set Acceleration | No | Typically Yes | No |
| Meet ASTM C1582 | Yes | Yes | No |
| Dosage Rates | 1-1.5 pt/yd3 (0.6-1 L/m3) | 1-6 gal/yd3 [5-30 L/m3] | |
| Noticeable Impact on Physical Properties | No (Except for delayed set time of MCI®-2005) | Yes (may affect fresh or hardened properties or both) | |
| Certified to Meet NSF Standard 61 | Yes | No | |
| Contain Renewable Resources | Yes | No | |
| Increase Shrinkage | No | Yes | Data not available |
