Hardening
C² Super Hard
Lithium silicate hardener and densifier for highly porous or deteriorating concrete.
Why choose C²? →Stock availability
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When to choose this product
For absorbent concrete, including porous existing floors undergoing grinding or polishing. Lithium silicate reacts in the pores to densify the surface and improve abrasion resistance.
Product advantages
- A premium lithium silicate concrete hardener and densifier for porous floors and demanding applications.
- The patented lithium silicate treatment penetrates deeply and reacts with concrete to form insoluble calcium silicate hydrate in its pores. Treatment improves resistance to water-related damage and surface abrasion, reduces dusting and simplifies maintenance.
- Suitable for grinding, sanding and different polishing or burnishing processes.
More advantages
- Particularly suited to porous, lower-quality floor surfaces, or where increased surface hardness is sought on a wearing slab.
- One-step application without scrubbing or flushing off the hardener, so no caustic wash water is produced.
- Reacts quickly inside concrete pores. Improves surface hardness, appearance and light reflection, while reducing the time and cost of diamond polishing.
- Treated floors are easier to maintain and need no waxing. Surface performance improves with use and appropriate maintenance.
- Does not absorb water or promote floor sweating. The TDS states that increased gloss and hardness do not reduce slip resistance.
- 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 | 11.0 |
| Active content | 14.5% |
| Total solids | 14.5% |
| 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
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.
Product at work
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