Description
CONCRESIVE ZR is a single component, solvent borne zinc rich epoxy primer, providing active galvanic protection to steel. It is a thick grey liquid of paint-like consistency, recommended for use where chloride induced attack on steel and concrete is involved.
Primary uses
- As a protective coating to steel reinforcing bars in concrete.
- As a touch-up primer for damaged galvanised metal.
- As a primer for steel substrates prior to suitable top coating.
Advantages
- Provides positive protection of steel components against corrosion.
- Excellent adhesion to steel.
- Easy to use single component material.
- No pot-life restrictions or wastage.
- Short overcoating time.
Packaging
CONCRESIVE ZR is a single component system, supplied in 1 litre units.
Typical properties*
Appearance: |
thick grey liquid |
Specific gravity: |
1.84 at 25°C |
Tack free time: (approximate) |
20 mins at 25°C 5 mins at 40°C |
Recoat time : |
5 hours at 25°C 2 hours at 40°C |
T.Z.C. in DFT |
>90% |
D.F.T. per coat: |
>50 microns |
Application temperature: |
min. 10°C max. 40°C |
Standards
CONCRESIVE ZR is formulated to meet the scope of BS 4652, 1971 Type 2.
Application procedure
Surface preparation:
The steel surfaces should be or grit blasted or wire brushed to remove all traces of corrosion. Ensure no oil, grease or dust is present. Surfaces should be dry.
Apply CONCRESIVE ZR immediately after completion of preparation to prevent any contamination. Do not leave blasted or prepared steel uncoated.
Mixing:
CONCRESIVE ZR should be thoroughly mixed prior to application.
Application:
Brush the CONCRESIVE ZR onto the prepared substrate, ensuring uniform and full coverage, particularly on the back face of reinforcement. Repair mortars can be applied as soon as the CONCRESIVE ZR is dry.
Long term exposure
CONCRESIVE ZR is not designed as a finished coating. Although protection to the steel will be provided for some time, overcoating should be carried out as soon as possible, particularly in aggressive environments.
Coverage
When used for coating steel 1 litre of CONCRESIVE ZR will cover 165 linear metres of 16mm diameter bar per coat and pro rata or 7.5m²/litre/coat.
Equipment care
Tools should be cleaned with SOLVENT NO. 2 immediately after use.
Storage
Store under cover out of direct sunlight and protect from extremes of temperature. In tropical climates the product must be stored in an air-conditioned environment. Shelf life is at least 12 months when stored as above.
Failure to comply with the recommended storage conditions may result in premature deterioration of the product or packaging. For specific storage advice consult BASF's Technical Services Department.
Safety precautions
As with all chemical products, care should be taken during use and storage to avoid contact with eyes, mouth, skin and foodstuffs. Treat splashes to eyes and skin immediately. If accidentally ingested, seek immediate medical attention. Reseal containers after use.
Note
Field service, where provided, does not constitute supervisory responsibility. For additional information contact your local BASF representative.
BASF reserves the right to have the true cause of any difficulty determined by accepted test methods.