The sulphate-resistant modification of the shotcrete mix (sulphate resistance group III) is intended for structural repair of overhead, inclined and vertical surfaces of concrete, brick and stone structures in a single application. It is used on bridges and overpasses, in tunnels and metro, tanks and treatment plants, on columns and beams. The mix is produced with 1.0 or 3.0 mm aggregate, class R3, after 28 days 40.0 MPa in compression (B30), watertightness W20.
| Manufacturer | Pakol — OOO “NPO Pakol”, Vysokaya Gora |
|---|---|
| Type | shotcrete mortars |
| Use | bridges and overpasses, tunnels and metro, tanks and treatment plants, columns and beams |
| Base | Dry construction mix with polymer fibre, sulphate-resistant and non-shrink, thixotropic type, on a cement binder |
| Packaging | 25 kg bags (three-ply with a polyethylene liner) |
| Application method | For structural repair of overhead, inclined and vertical surfaces of concrete, brick and stone structures with local damage (spalls, gouges, etc.) up to 20 mm deep (for the fine-grained fraction) and up to 50 mm (for the mix with coarse aggregate) in a single application |
| Application temperature | optimum +18…+30 °C; permitted from +5 °C |
| Curing | moist curing for 2 days (covering with film, spraying with water) |
| Key properties | aggregate size, mm: 3.0 (1.0); mixing water, l per 1 kg: 0.15…0.17; workability retention, min: 40; workability: cone penetration 4–8 cm (Pk2), spread 170-190 mm; bond strength to substrate, MPa: 2.0; strength after 24 h: flexural 4.0 / compressive 15.0 MPa; strength after 28 days: flexural 8.0 (Btb6.0) / compressive 40.0 (B30) MPa; modulus of elasticity, GPa: 18.0; sulphate resistance group: III; contact zone frost resistance: Fkz 75; frost resistance: F1 300, F2 150; watertightness: W20 |
| Shelf life | 12 months from the date of manufacture; storage at -30…+40 °C, humidity no more than 70 % |
| Standards | Pk2, B30, Btb6.0, W20, F1 300 to GOST 31357-2007 (taking into account the requirements of GOST R 56378-2015, class R3); TU 23.64.10-002-76310469-2021 |
Data from the manufacturer’s technical data sheet. The coating system, number of coats and quantity are selected for your project on request.
High-strength flowable mixes for structural repair of floors, roads, airfields and equipment foundations; 80.0 and 100.0 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.
Thixotropic epoxy mortar for filling spalls and gouges with a chemically resistant coating on concrete, stone and brick; 95.0 MPa compressive at 7 days.
Non-structural filling of large spalls and gouges on walls, columns and beams of industrial buildings: a thixotropic R3 mix with 3 mm aggregate.
High-strength self-levelling B70 mix for winter repair of industrial floors and roads down to −20 °C; 55.0 MPa after just 24 h.
Basic microcement grade with particles up to 0.1 mm: it is used to prepare an injection grout for bases, soils and internal damage in masonry and concrete.
