Sika FerroGard-901 S is a precision-formulated liquid concrete admixture engineered to protect embedded reinforcing steel from corrosion while extending the service life of concrete structures in harsh environments. This advanced dual-purpose inhibitor combines aminoalcohols with organic and inorganic corrosion inhibitors to provide comprehensive protection for both anodic and cathodic parts of the corrosion cell. With its high vapor pressure and steel affinity, FerroGard-901 S penetrates through concrete to reach reinforcement surfaces, where it forms a continuous protective barrier against chlorides and other deleterious substances.
The product works by leveraging the natural alkaline environment of sound concrete, which normally deposits a passivating layer of iron oxides around steel reinforcement. When this protective layer breaks down due to carbonation or chloride penetration, FerroGard-901 S steps in to maintain protection through its unique ability to displace chloride ions from metal surfaces and create a physical barrier. At the recommended dosage of 2 gallons per cubic yard (3 gallons for extreme marine exposure), this admixture delivers reliable corrosion inhibition without affecting fresh or hardened concrete properties, making it an ideal solution for contractors working in corrosive environments.
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Key Features of Sika FerroGard-901 S
Dual-Action Corrosion Protection
Protects both anodic and cathodic parts of the corrosion cell through a combination of aminoalcohols and organic/inorganic inhibitors.
High Penetration Capability
Superior vapor pressure allows deep penetration through concrete to reach steel reinforcement surfaces where protection is needed most.
Chloride Displacement Technology
Actively displaces chloride ions from metal surfaces while forming a continuous protective film barrier.
No Impact on Concrete Properties
Maintains all rheological properties of plastic concrete and hardened concrete characteristics including compressive strength and permeability.
Wide Chloride Tolerance Range
Provides effective corrosion inhibition across varying chloride concentrations, from moderate exposure to severe marine salt environments.
Easy Integration
Compatible with existing concrete mix designs without requiring changes to placement operations or mixing procedures.
Recommended Applications of Sika FerroGard-901 S
Sika FerroGard-901 S is specifically designed for contractors, engineers, and ready-mix producers working with steel-reinforced concrete exposed to corrosive conditions. Its proven performance in high-chloride environments makes it especially valuable for infrastructure projects where long-term durability and reduced maintenance costs are critical priorities.
Primary Applications Include:
- Steel-reinforced concrete bridges and highways exposed to deicing salts
- Concrete structures in marine environments including piers, piles, and dock structures
- Parking garages and transportation infrastructure
- Industrial facilities with chemical exposure
- Precast concrete elements for harsh environments
- Repair and rehabilitation projects requiring enhanced corrosion protection
Technical Specifications – Sika FerroGard-901 S
Liquid corrosion inhibiting admixture with comprehensive performance data for steel-reinforced concrete structures.
Dual Action Corrosion Inhibitor
Liquid Admixture Ready to Use
Marine & Deicing Salt Protection
Bridges & Infrastructure Applications
Extends Service Life
Reduces Maintenance Costs
No Mix Design Changes
High Chloride Protection
Marine Environment Suitable
DOT & Bridge Applications
Frequently Asked Questions
What is the recommended dosage rate for FerroGard-901 S?
The standard dosage is 2 gallons per cubic yard of concrete. For extremely high chloride environments and severe marine exposure, increase to 3 gallons per cubic yard.
How should FerroGard-901 S be added to concrete?
Add the correct amount directly to freshly mixed concrete at the plant for best results. It can also be added to ready-mix trucks at the plant or job site. Reduce mix water by an equivalent amount to maintain proper water-cement ratio.
Does FerroGard-901 S affect air entrainment?
Minor adjustments in air entrainment may be required. Do not pre-mix with air entraining agents – dispense each admixture individually into the mix.
What is the shelf life and storage requirements?
Shelf life is one year minimum when stored in dry warehouse conditions between 50°F and 80°F. Store at 40°F to 95°F and protect from freezing. If frozen, discard the product.
Can it be used with other admixtures?
Yes, but care must be taken to dispense each admixture into the mix individually. Do not pre-mix with dry cement or air entraining agents.
What environments benefit most from FerroGard-901 S?
It’s most effective in chloride-rich environments including marine structures, bridge decks exposed to deicing salts, parking garages, and any concrete exposed to industrial chemicals or salt spray.
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