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BIRSS UK-2 hardener — corundum topping for industrial floors
BIRSS

BIRSS UK-2 hardener — corundum topping for industrial floors

Toppings

Unlike the quartz-based UK-1, UK-2 contains a graded corundum filler, so the topping is intended for floors under high service loads. The mix is trowelled into fresh concrete by machine or by hand in two passes; the surface achieves frost resistance grade F2150 and water impermeability W8. The coating is moderately resistant to alkalis up to 8 %, mineral oils and petroleum products — fuel oil, petrol, kerosene and diesel.

Specifications

ManufacturerBIRSS — AO “Opytny Zavod Sukhikh Smesey”, Moscow
Typetoppings
Useproduction halls, warehouses and logistics, car parks and ramps, retail and public, outdoor areas, wet rooms, chemically resistant
Basedry mix: graded corundum filler, high-strength Portland cement, chemical and mineral additives
Colourgrey (tinted to the BIRSS palette)
Packagingpaper bags 25 kg (a 50 kg bag is also listed in the catalogue)
Application methodtrowelled into freshly laid concrete (at least B22.5/M300) or BIRSS 8/53 sand concrete with power trowels or by hand, in two passes (2/3 + 1/3)
Application temperature+5…+35 °C
Curingwaiting time before application 2–7 h (as for UK-1)
Key properties28-day compressive strength at least 65.0 MPa; flexural tensile strength Btb5.2/7.0 MPa; abrasion 0.4 g/cm²; impact resistance 2 kg; water impermeability W8; adhesion at least 0.6 MPa; frost resistance F2150; service temperature −50…+70 °C; grain size up to 2.5 mm; moderate resistance to alkalis up to 8 %, mineral oils, petroleum products (fuel oil, petrol, kerosene, diesel fuel) and substances of animal origin
Consumption4–6 kg of dry mix per 1 m² (depends on colour saturation)
Shelf life12 months from the date of manufacture in undamaged packaging, in a dry room
StandardsTU 5745-007-05668056-2013; QMS to GOST R ISO 9001-2015

Data from the manufacturer’s technical data sheet. The coating system, number of coats and quantity are selected for your project on request.

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