This finely dispersed high-flow mix with particles no larger than 0.05 mm (average size 5–10 µm) is intended for injection filling of through and internal cracks, caverns and separations in concrete, stone and brick structures and for restoring their monolithic integrity. The rapid-hardening microcement is used in tunnels and metro, on columns and beams, and can be injected down to −15 °C without heating. At a water/solids ratio of 0.4 the grout reaches 60.0 MPa in compression after 28 days (B45), watertightness W16, frost resistance F1 800.
| Manufacturer | Pakol — OOO “NPO Pakol”, Vysokaya Gora |
|---|---|
| Type | other concrete repair materials |
| Use | tunnels and metro, columns and beams |
| Base | Finely dispersed high-flow dry mix on a cement binder (rapid-hardening microcement) |
| Packaging | 25 kg bags (three-ply with a polyethylene liner) |
| Application method | For injection filling of through and internal cracks, caverns and separations that have arisen in service in concrete, stone and brick structures, to restore their monolithic integrity |
| Application temperature | down to −15 °C without heating |
| Key properties | maximum particle size: 0.05 mm (50 µm); average particle size: 5–10 µm; water/solids ratio (W/S): 0.4 / 0.6; workability: Pk4 (cone penetration 12–14 cm) / spread over 30 cm; workability retention: 15 / 20 min; Marsh funnel viscosity: 65±2 / 29±2 s; sedimentation after 120 min: 2±1 / 5±1 %; bond to concrete at 28 days: 2.0 / 1.8 MPa; strength after 24 h: flexural 5.0 / compressive 20.0 MPa (W/S 0.4); after 28 days: flexural 7.0 (Btb5.2) / compressive 60.0 (B45) MPa (W/S 0.4); frost resistance: F1 800 / F1 600; watertightness: W16 / W12; linear expansion: ≤0.05 / 0.01 % |
| Shelf life | 12 months from the date of manufacture |
| Standards | Pk4, B45, Btb5.2, W16, F1 800 (at W/S – 0.4) to GOST 31357-2007 (taking into account the requirements of GOST 33762-2016 and GOST R 59538-2021); TU 23.64.10-009-76310469-2021 |
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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