BIRSS VRS 600 — R4 repair mix for high-strength concrete structures
Fibre-reinforced thixotropic mortar for column and beam corners, balcony edges and working joints; service temperature up to +300 °C.

In-Kharts is a penetrating epoxy primer that is applied as the first coat in the Riberpol polyurethane floor system. The same compound is used to fill cracks and joints, to bond fresh concrete to hardened concrete and metal to concrete, and to prepare fillers, repair and injection mixes. Bond to concrete is at least 3.5 N/mm², pot life at least 90 min, Shore D hardness 40.
| Manufacturer | BIRSS — AO “Opytny Zavod Sukhikh Smesey”, Moscow |
|---|---|
| Type | floor primers |
| Use | production halls, warehouses and logistics |
| Base | two-component unpigmented epoxy compound with reduced solvent content |
| Colour | clear (unpigmented) |
| Packaging | metal pails, kits (A+B) 15 and 20 kg |
| Application method | penetrating primer; filling of cracks and joints; structural bonding of fresh and hardened concrete, bonding metal to concrete; binder for fillers, repair and injection compounds |
| Application temperature | not below +15 °C |
| Curing | drying to degree 3 — after 12–24 h; further work after 24 h; foot traffic after 3 days; full cure after 7 days |
| Key properties | specific gravity 1.05–1.1 g/cm³; pot life at least 90 min; Shore D hardness 40; bond to concrete at least 3.5 N/mm²; service temperature −30…+80 °C (wet exposure up to +40 °C) |
| Consumption | 0.2–0.5 kg/m² — primer coat; 0.6–0.7 kg/m²/mm — binder for repair and filler compounds |
| Shelf life | not more than 12 months in closed original packaging; protect from sunlight, heat and freezing |
| Standards | TU 2257-018-05668056-01 with amendments No. 1, No. 2 |
Data from the manufacturer’s technical data sheet. The coating system, number of coats and quantity are selected for your project on request.
Fibre-reinforced thixotropic mortar for column and beam corners, balcony edges and working joints; service temperature up to +300 °C.
Deep-matt solvent-free waterborne polyurethane sealer for finishing polyurethane and epoxy self-levelling floors and concrete.
Dry quartz-filled hardening mix for medium-duty floors in production halls, warehouses and car parks; compressive strength from 60.0 MPa.
Clear water-emulsifiable epoxy sealer, gloss or semi-matt — a finish for self-levelling floors, chip-broadcast coatings and concrete.
Resilient polyurethane floor for crack-prone concrete substrates and mastic asphalt; remains elastic down to −20 °C.
Kit of dry mix and granite aggregate for repairing ramps, bridge abutments, channels, floors and slab joints; modulus of elasticity 25,000 MPa.