Sika® CNI
CORROSION INHIBITING ADMIXTURE
Sika® CNI is a calcium nitrite-based corrosion inhibiting admixture containing a minimum of 30% calcium nitrite by mass. Sika® CNI meets the requirements of ASTM C1582 and ASTM C494/AASHTO M 194, Type C.
Sika® CNI, when mixed in concrete, forms a passivating layer on exposed steel. This passivating layer provides corrosion protection from chlorides and other oxidative elements.
By effectively inhibiting corrosion Sika® CNI will extend the service life of steel-reinforced concrete structures.
Sika® CNI also provides:
- Accelerated setting time across a wide range of temperatures allowing earlier finishing, stripping and reuse of forms,
- Increased early and ultimate compressive and flexural strengths,
- Accelerated strength gain allowing earlier structural use and completion times.