Sodium silicate based transparent surface hardener, dustproofer, sealing and curing compound for concrete
Sikafloor®-CureHard-24 is a high solids, one part, clear sodium silicate based liquid to cure, harden and seal fresh or hardened concrete.
Sodium silicate water dilution.
~ 1.2 kg/l (at +20°C)
|
Loss of water g/100 cm² | Loss of water compared to ASTM C309 (100% = 5.5 g / 100 cm²) | Loss of water compared to untreated concrete (100% = 18.7 g / 100 cm²) |
|---|---|---|---|
| Sikafloor®-CureHard-24 | 10.92 | 198.5% | 58.4 % |
~ 24% (by weight)
Consumption / Dosage
0.15 - 0.25 l/m2/coat (4 - 7 m2/l coat).
This figure is theoretical and does not include for any additional material required due to surface porosity, surface profile, variations in level and wastage etc.
24 months from date of production, if stored properly in original, unopened and undamaged sealed packaging, in dry conditions at temperatures between +5°C and +30°C. Protect from frost.
| Code | Item | Pack |
|---|---|---|
| 15597 | Sikafloor Curehard 24 - To Cure, Harden and Seal Fresh or Hardened Concrete 5L | 5L |
| 10630 | Sikafloor Curehard 24 - To Cure, Harden and Seal Fresh or Hardened Concrete 205L | 205L |
Product is supplied ready to use.
Fresh Concrete: Apply in a continuous film using a high volume low pressure spray unit as soon as the surface is firm enough to walk on and in sufficient quantity to keep the surface damp for at least 30 minutes.
After ~ 30 to 45 minutes, the material begins to gel and becomes slippery. Wet the material lightly with a water spray to reduce slipperiness and rework into the surface for 10 - 20 minutes with a soft bristle broom or floor-scrubbing machine. After about 20 minutes, the material will return to a gel. Rinse the floor and remove any excess material using a squeegee, wet vacuum or mop.
Hardened Concrete: Apply in a continuous film using a high volume low pressure spray unit.
To ensure maximum penetration, scrub material into the surface with a soft bristle broom or floor-scrubbing machine (min. 30 minutes), until material begins to gel and become slippery. Wet the material lightly with a water spray and rework it into the surface for another 10 - 20 minutes. After this process, rinse the floor and remove any excess material using a squeegee, wet vacuum or mop.
On porous, rough-textured or broom-finished surfaces, a second coat may be required.
For large surfaces and greater placing rates, mechanical equipment such as ride-on cleaning machines can be also used to place, brush in and remove the excess material from the surface.
Clean all tools and application equipment with water immediately after use. Hardened / cured material can only be mechanically removed.
Do not use sprayers that were used for spraying silicones or release agents (oils).
Where 2 coats are required to ensure maximum densification the second coat can be installed 2 - 4 hours following the first.
Allow previous coats to become tack free before applying additional coats.
| Temperature | Time |
|---|---|
| +5°C | ~ 4 hours |
| +10°C | ~ 3.5 hours |
| +20°C | ~ 3 hours |
| +25°C | ~ 2 hours |
Times are approximate and will be affected by changing ambient conditions particularly temperature and relative humidity
The surface is touch-dry after 2 hours at +20 °C. Maximum sealing and hardening effect achieved after ca 7 days at +20 °C.
Applied Product ready for use
| Substrate temperature | +10°C | +20°C | +30°C |
|---|---|---|---|
| Fully serviceable | ~ 6 hours | ~ 5 hours | ~ 4 hours |
Note: Times are approximate and will be affected by changing ambient and substrate conditions.
To maintain the appearance of the floor after application, Sikafloor®-CureHard-24 must have all spillages removed immediately and must be regularly cleaned using rotary brushes, mechanical scrubbers, scrubber dryers, high pressure washers, wash and vacuum techniques, etc., using suitable detergents and waxes.
