Independently Verified, Active Corrosion Inhibiting Impregnation Liquid Sika FerroGard-903+ is a surface applied mixed corrosion inhibitor, independently verified, designed for use as an impregnation of steel reinforced uncoated concrete, and is an improved formulation of the original Sika FerroGard-903.
Sika FerroGard-903+ is based on organic compounds. Sika FerroGard-903+ penetrates the concrete and forms a protective monomolecular layer on the surface of the reinforcing steel.
Protection with Sika FerroGard-903+ delays both the start of corrosion and reduces the corrosion rate. Corrosion protection with Sika FerroGard-903+ increases the service and maintenance life cycles by up to 20 years when used as a part of a complete Sika Concrete Repair and Protection System. - Complies to principle 11 of EN 1504-9 method 11.3 (applying inhibitor to the concrete).
- Does not change the appearance of the concrete structure.
- Does not alter the water vapour diffusion properties of concrete.
- Long-term protection and durability.
- Can be applied to the surface of existing repairs and to surrounding areas to prevent the development of incipient anodes.
- Protects both cathodic (principle 9), and anodic (principle 11) zones of reinforcing steel.
- Can be applied where other repair / prevention options are not viable.
- Economic extension of the service life of reinforced concrete structures.
- Easy, economical application, renewable.
- Can be used as part of a simple, yet effective, Concrete Repair and Protection System.
- Penetration depth can be tested on site using the Sika 'Qualitative Analysis Test' - refer to your Sika Technical Service Department for details.
- Product efficacy independently tested and verified.
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Usage - As an active corrosion inhibitor for uncoated reinforced concrete.
- For the corrosion protection of steel reinforced concrete structures above and below the ground.
- 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.
- Sika FerroGard-903+ is especially suitable for extending the service life of aesthetically valuable fair-faced concrete surfaces such as historic structures.
- As part of Sika's Total Corrosion Management System.
- To extend design lives of concrete elements - particularly useful for precast concrete.
Advantages - Complies to principle 11 of EN 1504-9 method 11.3 (applying inhibitor to the concrete).
- Does not change the appearance of the concrete structure.
- Does not alter the water vapour diffusion properties of concrete.
- Long-term protection and durability.
- Can be applied to the surface of existing repairs and to surrounding areas to prevent the development of incipient anodes.
- Protects both cathodic (principle 9), and anodic (principle 11) zones of reinforcing steel.
- Can be applied where other repair / prevention options are not viable.
- Economic extension of the service life of reinforced concrete structures.
- Easy, economical application, renewable.
- Can be used as part of a simple, yet effective, Concrete Repair and Protection System.
- Penetration depth can be tested on site using the Sika 'Qualitative Analysis Test' - refer to your Sika Technical Service Department for details.
- Product efficacy independently tested and verified.
Packaging 20 kg pail 1000 kg IBC Colour Transparent liquid. |
Technical Information Penetration Depth Site surveys and experimental tests have shown that Sika FerroGard-903+ can penetrate through concrete at a rate of a few millimetres per day and to a depth of approximately 25 to 40 mm in 1 month. This penetration rate can be faster or slower dependent on the porosity of the concrete. Sika FerroGard-903+ penetrates through both liquid and vapour phase diffusion mechanisms.
NOTE:
If, after application of Sika FerroGard-903+, the concrete surface is coated with protective coatings (cement based, acrylic or impregnation) or hydrophobic impregnation, the rate of diffusion of the inhibitor is reduced but not stopped as the mechanism of diffusion continues in the vapour phase.
As concrete quality and permeability differ, it is recommended to perform some preliminary depth profile testing by the Sika 'Qualitative Analysis' to assess the specific penetration rate.
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Application Information Ambient Air Temperature +5°C minimum / +40°C maximum Substrate Temperature +5°C minimum / +40°C maximum Waiting Time / Overcoating Waiting time between coats:
This is dependent on the porosity of the concrete and the weather conditions, but is normally 1 to 6 hours. Allow the surface to dry out between coats to a matt damp appearance.
Overcoating:
If the application is carried out as described above, no further treatment is required before overcoating with Sikagard hydrophobic impregnations, Sikagard breathable coatings, or Sikafloor products (refer to appropriate Product Data Sheet for application details).
If non-Sika coatings are to be applied, please contact the manufacturers' technical department for confirmation of compatibility with Sika FerroGard-903+, or undertake compatibility and adhesion site trials.
When Sika FerroGard-903+ is used within a patch repair or before a cementitious overlay. Standard preparation (pre-wetting) shall be applied.
When using a smoothing coat / pore filler over surfaces treated with Sika FerroGard-903+, products such as Sikagard-720 EpoCem or Sika MonoTop-3020, etc., can be used. Cementitious levelling mortars shall only be used if there is a well prepared open textured surface, that is completely cleaned of residue to achieve the required adhesion value.
If other Sika products are to be used, site trials are recommended to confirm preparation and suitability.
If non-Sika products are to be used, please contact the manufacturers' technical department for confirmation of compatibility with Sika FerroGard-903+ or undertake compatibility and adhesion site trials. |
The above design is only a sample of the options available, for reference purposes only. Our policy of continuous improvement may result in a change of specifications without notice. If any discrepencies might be between the data sheet values and standards, we reserve the rights to make technical changes. Our company will not be held responsible, as all or any of pictures, drawings, weights and dimensions details or other elements in this document are only indicative and must not be considered contractual. Contact our sales team for other specifications or custom made products.
Contact our sales team for other specifications or custom made products.
