The high-strength version of the microcement: at a water/solids ratio of 0.3 the grout reaches 85.0 MPa in compression (B65) and 10.0 MPa in flexure (Btb8.0) after 28 days. It is injected to strengthen foundations, consolidate internal damage in concrete, brick and stone structures and stabilise bases and soils, including in tunnels and metro. The mix is prepared at W/S 0.3, 0.4 or 0.5, with workability retention of 40, 60 or 80 min respectively; particles are no larger than 0.05 mm.
| 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 (high-strength microcement) |
| Packaging | 25 kg bags (three-ply with a polyethylene liner) |
| Application method | Used as a high-strength injection repair grout for strengthening foundations, consolidating internal damage in concrete, brick and stone structures, and stabilising bases and soils |
| Key properties | maximum particle size: 0.05 mm (50 µm); average particle size: 5–10 µm; water/solids ratio (W/S): 0.3 / 0.4 / 0.5; workability: Pk4 (cone penetration 12–14 cm) / spread over 30 cm; workability retention: 40 / 60 / 80 min; Marsh funnel viscosity: — / 65±2 / 29±2 s; sedimentation after 120 min: none / 2±1 / 5±1 %; strength after 24 h: flexural 6.0 / compressive 40.0 MPa (W/S 0.3); after 28 days: flexural 10.0 (Btb8.0) / compressive 85.0 (B65) MPa (W/S 0.3) |
| Shelf life | 12 months from the date of manufacture |
| Standards | Pk4, B65, Btb8.0, W16, F1 600 (at W/S – 0.3) 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.
Coarse-grained thixotropic R4 mortar for repair and strengthening of bridges, tunnels, dams and tanks; F1 1000, W20, compressive 65.0 MPa after 28 days.
Mix with an expansive admixture and modifiers that reduce cracking, for structural repair and strengthening of reinforced concrete; class R4, B50.
Finely dispersed cementitious skim coat for finish repair and levelling of concrete, brick and stone walls and ceilings; bond to substrate 2.8 MPa.
Fine-grained thixotropic R4 mortar for structural repair of shallow spalls on bridges, in tunnels and on columns; watertightness W18.
Steel-fibre flowable mortar for autumn and spring repair at −10…+7 °C: rapid strength gain, Btb8.0 and 60.0 MPa compressive after 28 days.
Rapid-hardening microcement for injecting through and internal cracks, caverns and separations in concrete and masonry; work down to −15 °C without heating.
