BIRSS 53 SR — R3 mix for dry-mix and wet-mix shotcreting
Shotcrete mix for repairing and protecting structures, supporting mine workings, tunnel linings, silos and cooling towers; 40 MPa in compression at 28 days.

This colourless waterborne compound suits both freshly laid floors, including those with a topping, and mature concrete. On young concrete the impregnation slows moisture evaporation, while on old concrete it hardens the surface; work is possible indoors and outdoors. For finished floors on UK-1 and UK-2 toppings the manufacturer recommends Kontakt as a protective layer; bond to concrete is at least 2.0 MPa.
| Manufacturer | BIRSS — AO “Opytny Zavod Sukhikh Smesey”, Moscow |
|---|---|
| Type | concrete impregnations and hardeners |
| Use | production halls, warehouses and logistics, outdoor areas |
| Base | three-component water-emulsifiable unpigmented solvent-free epoxy compound |
| Colour | colourless |
| Packaging | metal pails and plastic canisters, kit (A+B+C) 40 kg |
| Application method | impregnation of freshly laid (incl. with topping) or old concrete floors — hardening and retarding water evaporation; indoors and outdoors |
| Application temperature | not below +15 °C |
| Curing | drying to degree 3 — after 8–12 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 60 min; bond to concrete at least 2.0 MPa; service temperature −30…+60 °C |
| Consumption | 0.08–0.12 kg/m² on a freshly laid floor with a hardened surface; 0.12–0.2 kg/m² on a mature concrete floor |
| 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.
Shotcrete mix for repairing and protecting structures, supporting mine workings, tunnel linings, silos and cooling towers; 40 MPa in compression at 28 days.
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