The mastic was developed to the standard requirements of NII ZhT for JSC RZD facilities — bridge structures, tunnels, platforms and deck slabs; it has a VNIIZhT conclusion. It is a spray-applied two-component polyurea-urethane with 100 % solids that protects against corrosion and waterproofs at the same time: on concrete it is applied over the impregnating varnish “Eteral”, on metal over the primer “Forpol-Primer”. The coating dries to degree 3 in less than 5 min, the elongation is more than 100 %, and it is resistant to petroleum products, alkalis, acids and salt solutions.
| Manufacturer | Kronos SPb — AO “KRONOS SPb”, Saint Petersburg |
|---|---|
| Type | anticorrosive material |
| Use | bridges, concrete, steel structures |
| Base | Two-component spray-applied polyurea-urethane mastic, 100 % solids |
| Colour | black |
| Application method | units for two-component systems with heating of the components (40–75 °C), one coat |
| Application temperature | air at least +5 °C; surface at least +20 °C; relative humidity max. 85 % |
| Drying | mix life less than 90 s; to degree 3 — less than 5 min at 23 °C |
| Key properties | Base:hardener ratio by weight: 1:1.3, Tensile strength at break: more than 10 MPa, Elongation: more than 100 %, Water absorption over 24 h at 23 °C: less than 1.0 %, Heat resistance: from −60 °C to +60 °C, Resistance to organic solvents, oils, petroleum products, alkalis, acids and salt solutions |
| Shelf life | 12 months from the date of manufacture; storage from +10 to +25 °C |
| Standards | TU 2312-147-20504464-2012 |
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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