Sikagard 8500CI - Surface-applied Corrosion Inhibitor
Verified by manufacturer 3 days ago
Independently verified, dual-phase, surface-applied corrosion inhibitor.
Application
Sikagard®-8500 CI is sprayed directly onto the surface of steel reinforced concrete structures and buildings. It is equally suited to cast in situ, precast, post tensioned, pre-stressed, GFRC or other steel reinforced concrete. Sikagard®-8500 CI is primarily used for horizontal applications (i.e. decks) where saturation can be readily achieved. The Product can be used as part of an overall repair strategy using Sika® Concrete Repair Systems to mitigate corrosion rates within the balance of the structure and significantly reduce the possibility of 'ring anode' or 'halo effect' induced spalling later. Equally Sikagard®-8500 CI can be used as a cost-effective preventative measure before the onset of corrosion induced problems occur. It is particularly suited for the protection of:
- Steel reinforced concrete, including cast-in-place, precast, pre-stressed and post tensioned.
- Horizonal surfaces, including bridge decks, multi-storey car park decks, pedestrian walkways, concrete docks, loading bays, etc.
- Supporting elements (beams, columns, piles, piers, etc.).
- Building faςades and balconies.
- Marine and other high humidity environments not subject to hydrostatic pressure.
- Steel-reinforced concrete exposed to de-icing salts.
Description
Sikagard®-8500 CI is a one-component, ready to use, low viscosity, clear liquid that combines the power of a 100% active penetrating corrosion inhibitor and a latent-phase corrosion inhibitor to mitigate electrochemical corrosion of reinforcing steel in new or aged concrete. Sikagard®-8500 CI uniquely combines the primary reactive penetrant with a second, latent-phase corrosion inhibitor. This latent-phase inhibitor activates when the concrete cracks, migrating to the reinforcing steel to provide an extra level of protection when it is most needed.
Features and benefits:
- 100% active ingredients. No diluents or fillers.
- Easy to apply and quick-drying for fast installation.
- Provides water repellent surface to prevent penetration of moisture and chlorides.
- Reduces corrosion due to the 'ring anode' or 'halo effect'.
- Suitable for use in new construction and repair applications.
- Effective in chloride-contaminated and carbonated concrete to significantly slow down the rate of corrosion.
- Latent-phase corrosion inhibitor activates if concrete cracks or if moisture penetrates the concrete, providing extended protection when it is most needed.
- Vapour-permeable, to prevent moisture entrapment.
- Effective in high humidity environments to mitigate corrosion of reinforcing steel.
- Easy to apply surface treatment that penetrates into the concrete to bond with steel and the concrete matrix to inhibit macrocell (mat-to-mat) and microcell (along rebar) corrosion of steel reinforced concrete.
- Can be covered with most types of subsequent coatings, thereby reducing downstream labour costs compared with many other corrosion inhibitors.
Approvals:
- ICCET Testing.
- ASTM G109.
- FHWA-HRT-07-043.
- M-82 Testing.
- ASTM C 876.
- EIS Testing.
- University of Bergamo Studies.
General information
Color | Clear |
Shape | Formless |
Uniclass | |
CAWS | C42/315 Protective coating to reinforcement |
Specification data - Corrosion inhibitor chemicals
Classification data | |
Corrosion inhibitors | Triethoxyoctylsilane, triethoxyisobutylsilane, triisobutyl phosphate and N-ethylacetamide. |
Freeze thaw cycle | ≥ 30 cycles later than not impregnated specimen. |
Weathering resistance | No yellowing or discolouration |
Water vapour permeability | Moisture Vapor Transmission Performance: >75 %. Waterproofing Performance After Abrasion: >85 %. |
Chloride ion resistance | >88%. |
Water absorption | Compared to Untreated Sample 2.8%. In Alkaline Solution Compared to Untreated Sample: 9.9 %. Water Absorption Reduction: > 88%. |
Literature
Sikagard-8500CI
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