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Sika Ferrogard 903+ (25L)

Surface Applied Corrosion Inhibitor for Reinforced Concrete

Sika® FerroGard® -903+ penetrates concrete and forms an adsorbed protective film on the surface of the steel reinforcement. The protective adsorbed film of Ferrogard 903+ reduces the rate of corrosion in carbonated and chloride contaminated concrete.

Sika® FerroGard® -903+ is normally applied as part of a corrosion management strategy and is compatible and a component of all the Sika concrete repair and protection systems.

 

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Description

Sika Ferrogard 903+ (25L)

Surface Applied Corrosion Inhibitor for Reinforced Concrete

Sika® FerroGard® -903+ is a unique blend of non toxic, organic corrosion inhibitor based on amino alcohol and salts of amino alcohol technology designed for use as an impregnation on hardened reinforced concrete. 
 
The product is a multifunctional inhibitor which controls the cathodic and anodic reactions. This dual action effect significantly retards both the onset and the rate of corrosion and increases the time to future maintenance.

Typical uses

  • Offers corrosion protection to steel reinforced concrete above and below the ground
  • Used as a corrosion control treatment for undamaged reinforced concrete where reinforcing steel is corroding, or is at risk from corrosion due to the effects of carbonated or chloride contaminated concrete.
  • Can be used as part of a simple yet effective concrete repair and protection system
  • Sika FerroGard 903+ is especially suitable for extending the service life of aesthetically valuable fair-faced concrete surfaces such as historic structures.

System Structure

Sika Ferrogard 903+ is part of the range of Sika products complying with the relevant part of European Standard EN 1504 and comprising of:

Performance and Durability

Sika® FerroGard® -903+ penetrates the concrete and forms an adsorbed protective film on the surface of the steel reinforcement. This protective adsorbed film reduces the rate of corrosion in carbonated and chloride contaminated concrete.

Protective layer

Sika® FerroGard® -903+ forms an adsorbed protective film on the reinforcement. The process of forming this protective film takes place even in carbonated concrete and even with the presence of chlorides in the concrete.

Delay of the corrosion process

  • The dissolution of the iron in contact with water will be reduced thanks to this passivating protective film
  • This film is also a barrier to the reduction of oxygen which will be prevented

Application

  • Sika® FerroGard® -903+ is applied as an impregnation by spray, roller or brush onto the surface of the concrete. The corrosion inhibitor penetrates into the concrete and protects the reinforcement by forming a protective film on the steel surface. Through this the onset of corrosion is delayed and the rate of corrosion reduced.
  • The material is a clear colourless liquid which does not itself normally alter the aspect of fair-faced concrete. (Check if used in conjunction with chemical cleaners). 
  • Sika® FerroGard® -903+ penetrates to a depth of 25 to 40 mm in 1 month dependent on porosity of the concrete.
  • The material reaches the surface of the steel through different transport mechanisms:
    • During application of Sika® FerroGard® -903+ transportation is mainly by capillary suction-like water
    • Sika® FerroGard® -903+ is later carried in solution by the penetration of water-like chlorides
    • Sika® FerroGard® -903+ also travels by gas diffusion-like carbon dioxide

Additional information

Weight 25 kg
CPRL Colours

Clear

Brand

Sika

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