Gidrobeton-Podvodny — flowable mortar for repairing structures under water
Flowable mix resistant to washout by water, for underwater repair of bridge piers, port and hydraulic structures.

Kalmatron-Adgeziv is a dry mix based on Portland cement with adhesion and anti-corrosion admixtures that performs two tasks in repair. Cleaned rebar is coated with it using a soft brush in two passes, while on damp concrete it is applied with a stiff brush as a bonding primer, onto which high-strength cementitious repair mortars are placed. Bond to metal is at least 2.5 MPa, to concrete 1.5 MPa, contact zone frost resistance Fkz 50; packaging — 25 kg bags and 3 kg buckets.
| Manufacturer | Kalmatron — OOO “Kalmatron-SPb”, Saint Petersburg |
|---|---|
| Type | rebar protection and bonding compounds |
| Base | dry mix based on Portland cement, building sand and special adhesion and anti-corrosion admixtures; bonding and anti-corrosion compound |
| Colour | light grey (free-flowing powder) |
| Packaging | paper bags of (25±0.25) kg; 3 kg plastic buckets |
| Application method | anti-corrosion treatment of rebar before applying repair mortars and bonding primer before high-strength cementitious repair mortars; clean rebar and concrete of corrosion by sandblasting or with steel-bristle brushes (steel cleaning degree 2½), treat dense and smooth substrates and weak layers with sandblasting or water-jetting equipment, moisten the substrate without puddles; water 180–200 ml per 1 kg, mixing with a mixer for 2–5 min; do not add cement, aggregates or water; bonding layer — with a stiff brush on a damp substrate, place the repair mortar on the slightly set bonding coat, do not allow it to dry out (if it dries — a second layer) |
| Application temperature | +5…+35 °C (substrate and environment during the work and for 12 h afterwards) |
| Curing | before applying the repair mortar — hardening for about 2 h (+20 °C); before mechanical spraying — full cure, at least 12 h (+20 °C); protect from mechanical damage, rain, direct sun and draughts |
| Key properties | compressive strength at least 25 MPa, flexural at least 5.0 MPa (GOST 310.4); bond strength to metal at least 2.5 MPa, to concrete at least 1.5 MPa (GOST 31356); contact zone frost resistance at least Fkz 50 (GOST 31356); pot life at least 40 min (GOST 31356); flowability at least 40 cm (GOST R 56378); maximum aggregate size 0.63 mm; bulk density 1,150±50 kg/m³; moisture content of the mix no more than 0.3 % |
| Shelf life | 6 months in undamaged original packaging; covered dry room, air humidity no more than 70 %, not below +5 °C |
| Standards | TU 5745-009-54282519-2008; exemption letter of 18.06.2025 (compositions not subject to declaration) |
Data from the manufacturer’s technical data sheet. The coating system, number of coats and quantity are selected for your project on request.
Flowable mix resistant to washout by water, for underwater repair of bridge piers, port and hydraulic structures.
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