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BIRSS RSM-1 M450 Moroz — fibre-reinforced R4 mix for repair down to −15 °C
BIRSS RSM-1 M450 Moroz is intended for repair in cold weather: it is placed at temperatures from −15 to +5 °C. It is a rapid-hardening thixotropic R4 mix based on special cements with reinforcing fibre and sand up to 0.63 mm, for bridges and tunnels, structures under dynamic loads and joints between precast elements. In frost at −15 °C the mortar reaches at least 20 MPa in compression by 28 days, at +20 °C 45 MPa; workability is retained for 20 minutes.
Specifications
| Manufacturer | BIRSS — AO Opytny Zavod Sukhikh Smesey (Experimental Dry Mix Plant), Moscow |
|---|---|
| Type | thixotropic repair mortars |
| Use | bridges and overpasses, tunnels and metro, hydraulic structures and dams, columns and beams, industrial buildings |
| Base | BIRSS RSM-1 M450 Moroz dry repair mix is a material based on special cements, graded fine sand, reinforcing fibre and chemical admixtures. When mixed with water it gives a rheoplastic, non-segregating, rapid-hardening thixotropic mortar |
| Colour | grey |
| Packaging | bag 40 kg |
| Application method | BIRSS RSM-1 M450 Moroz repair mix is recommended for structural repair of concrete and reinforced concrete structures where high compressive strength is required: elements of road bridges and tunnels; structural elements subject to dynamic loads; filling vertical and horizontal joints between precast elements; potholes and cavities without formwork in areas with increased surface quality requirements; those… |
| Application temperature | −15…+5 °C |
| Key properties | maximum aggregate size, mm: 0.63; workability grade: Pk2/4-8; workability retention, min: 20; bond strength to substrate, MPa: 2; compressive strength, MPa, not less than At 1 = -15 °C At 1 = +20 °C -1 / 28 days 3 / 20 20 / 45; flexural strength, MPa, not less than At 1 = -15 °C At 1 = +20 °C - 1 / 28 days - / 3 5 / 10; water impermeability: W12; frost resistance: F2 400; sulphate resistance coefficient: 0.9; service temperature, °C: from -50 to +70 |
| Standards | class R4 to GOST R 56378; STO 05668056-004-2012 |
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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