Basic microcement is a finely dispersed high-flow mix with particles no larger than 0.1 mm (average size 10–30 µm) for preparing an injection repair grout. It is used to strengthen foundations, consolidate internal damage in concrete, brick and stone structures, and stabilise bases and soils, including in tunnels and metro. At a water/solids ratio of 0.3 the grout reaches 40.0 MPa in compression after 28 days (B30); at 0.4 and 0.5 the workability retention is 60 and 80 min.
| 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 (basic microcement) |
| Packaging | 25 kg bags (three-ply with a polyethylene liner) |
| Application method | Used as an 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: 0.1 mm (100 µm); average particle size: 10–30 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: — / 85±2 / 65±2 s; strength after 24 h: flexural 4.0 / compressive 16.0 MPa (W/S 0.3); after 28 days: flexural 6.0 (Btb4.4) / compressive 40.0 (B30) MPa (W/S 0.3) |
| Shelf life | 12 months from the date of manufacture |
| Standards | Pk4, B30, Btb4.4, W10, F1 150 (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.
Fine grain and work without heating down to −20 °C: a mix for urgent filling of shallow spalls in road and airfield pavements; 15.0 MPa after just 2 h.
Rapid-hardening thixotropic mix for urgent repair of walls, ceilings and columns at −10…+7 °C; 12.0 MPa compressive after 2 h.
Thixotropic B60 mix with a modulus of elasticity of 27.0 GPa for strengthening reinforced concrete columns, beams and walls of buildings and bridges; flexural 12.0 MPa.
Finely dispersed flowable R4 mix for thin-layer structural repair of floors, roads and bridges; aggregate size 0.2 mm, compressive 60.0 MPa.
High-strength winter B60 mix for repairing columns, beams and overhead areas in tunnels and on bridges down to −20 °C; 55.0 MPa after just 24 h.
Sulphate-resistant fibre-reinforced mix for shotcreting bridges, tunnels, tanks and treatment plants; watertightness W20.
