Innolayn NC620 R — ultra-rapid-hardening R4 grout for fast-track installation
Ultra-rapid-hardening R4 grout for equipment, anchors and sleepers in track concrete; 10 MPa in compression after just 2 hours.

The compound based on polyurethane-acrylic resin and water, solvent-free, is sprayed or rolled onto concrete and topping 1–2 hours after floating or immediately after grinding. The film reduces water evaporation, so the surface gains strength and wear resistance; it should not be covered with plastic sheeting. Besides floors, FK891 is used on road pavements and engineering structures. It keeps for 24 months and withstands 5 freeze-thaw cycles.
| Manufacturer | INDASTRO — OOO “Sedrus” |
|---|---|
| Type | impregnations and concrete hardeners |
| Use | production workshops, warehouses and logistics, outdoor areas |
| Base | polyurethane-acrylic resin, water; solvent-free |
| Colour | homogeneous white liquid |
| Packaging | plastic canisters 10 kg |
| Application method | sprayer, roller (12-16 mm pile), brush, squeegee; 1-2 h after floating the topping/concrete or immediately after grinding; 1-2 coats; do not cover with plastic sheeting |
| Application temperature | +10…+35 °C (substrate and application); air humidity no more than 80% |
| Curing | drying to degree 3 at +20 °C no more than 3 h |
| Key properties | Non-volatile content at least 35%; density 0.95-1.0 g/cm3; viscosity 18 ± 2 s (VZ-246, 4 mm nozzle); reduces water evaporation, increases strength and wear resistance |
| Consumption | 100-150 g/m2 for toppings and floated surfaces; up to 200 g/m2 for porous concrete (below M200) |
| Shelf life | 24 months; storage +5…+25 °C; withstands 5 freeze-thaw cycles |
| Standards | manufacturer's TU |
Data from the manufacturer’s technical data sheet. The coating system, number of coats and quantity are selected for your project on request.
Ultra-rapid-hardening R4 grout for equipment, anchors and sleepers in track concrete; 10 MPa in compression after just 2 hours.
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