Hardening
C² Hard Blend
Concentrated lithium silicate hardener for steel-trowelled or burnished concrete.
Why choose C²? →Depends on surface porosity and finish. Confirm consumption on a test area.
Stock availability
Contact us for availability
When to choose this product
For steel-trowelled, power-trowelled or burnished concrete. A concentrated silicate blend that densifies the surface and improves abrasion resistance.
Product advantages
- A concentrated lithium silicate blend hardener and densifier for concrete.
- Specifically designed for steel-trowelled, power-trowelled or burnished concrete finishes.
- Improves abrasion resistance. The treated surface can be burnished to develop a sheen.
More advantages
- One-step application without scrubbing or flushing off the hardener, so no caustic wash water is produced.
- Concentrate for steel-trowelled, power-trowelled or burnished concrete. Dilute 1:1 with clean water. Can be burnished for a quick sheen; floors can reopen once dry.
- Breathable and UV-stable; does not yellow, peel or flake.
- Low odor and non-flammable according to the TDS. Follow the SDS for handling and personal protection.
Technical information
Typical technical data
| Appearance | Clear, colorless liquid |
|---|---|
| Specific gravity | 1.10 |
| pH | 11.5 |
| Active content | 14% |
| Total solids | 14% |
| VOC content | 0 g/L |
| Shelf life in a tightly sealed, unopened container | 2 years |
| Flash point | Not applicable |
Typical values from the manufacturer’s TDS; application details are in the full instructions.
Preparation and working conditions
Surface and air temperature4–38 °C
Remove dirt, grease, curing residues and coatings that block absorption. Leave the concrete clean, dry and absorbent; check uniform wetting with a light water spray.
Equipment
Use a low-pressure sprayer. Distribute evenly without puddles; avoid forming a fine mist.
A microfiber pad helps spread a thin, even coat. Use clean tools.
Practical advice
Test a representative area with the equipment and preparation planned for the job. Let it dry before assessing the result and coverage.
For extra gloss and protection, select C² Seal or C² Ultra Seal; for a natural appearance, C² Stain Safe or C² Protector. Follow the chosen protective treatment’s own instructions.
Clean tools with fresh water before the product dries. Immediately wash splashes off glass, aluminium and other adjacent surfaces.
Storage and handling
Storage temperature4–38 °C
Store upright in sealed original containers in a cool, dry place. Close after dispensing. Follow local rules for unused product and packaging.
Protect from freezing.
Product at work
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