Bridges

For protection of new metal structures the company has developed three-layer protection systems which consist of zinc-rich primer, intermediate coat with anticorrosive pigments, and finishing polyurethane enamel of high weather resistance.

For renovation the company offers coating systems based on thick-coat epoxy or push through polyurethane primer.

Coating systems for constructions exposed to direct sun light (UV)
№	Name of a coat	Qty of coats	Thickness, micron	Minimum durability, years
1	ZINOTAN (zinc-rich polyurethane primer)	1	80	24
	POLYTON-UR (polyurethane colorable enamel)	1	60
	POLYTON-UR (UV) (acrylic urethane colorable enamel) high fastness to light	1	60
	Overall thickness		200
2	ZINOTAN (zinc-rich polyurethane primer)	1	80	15
	ALUMOTAN (aluminum-rich polyurethane primer)	2	80
	Overall thickness		160
3	ZFES (zinc-rich ethyl silicate primer)	2 - 3	80	15
	POLYTON-UR (polyurethane colorable enamel)	1	60
	POLYTON-UR (UV) (acrylic urethane colorable enamel) high fastness to light	1	60
	Overall thickness		200
4	ZINEP (zinc-rich epoxy primer)	1	50	15
	ISOLEP-mio (epoxy enamel with micaceous iron oxide additive)	1	100
	POLYTON-UR (UV) (acrylic urethane colorable enamel) high fastness to light	1	50
	Overall thickness		200
Coating systems for constructions not exposed to direct sun light (UV)
№	Name of a coat	Qty of coats	Thickness, micron	Minimum durability, years
5	ZINOTAN (zinc-rich polyurethane primer)	1	80	15
	POLYTON-UR (polyurethane colorable enamel)	2	90
	Overall thickness		170
6	ZINEP (zinc-rich epoxy primer)	1	50	15
	ISOLEP (epoxy enamel)	1	100
	Overall thickness		150
Table remarks 1. To reach operating viscosity of polyurethane materials and to wash the production equipment up, it is recommended to dilute these materials with Solv-UR solvent in amount of 10% of the paint volume. 2. Finishing enamels may be of any color according to RAL.
Coating systems for surfaces of repairable constructions
№	Name of a coat	Qty of coats	Thickness, micron	Minimum durability, years
7	ISOLEP (epoxy enamel)	1	150	11
	POLYTON-UR (UV) (acrylic urethane colorable enamel) high fastness to light	1	50
	Overall thickness		200
8	FERROTAN-PRO (penetrating polyurethane primer)	1	30	7
	FERROTAN (polyurethane composition with addition of micaceous iron oxide)	1	80
	POLYTON-UR (UV) (acrylic urethane colorable enamel) high fastness to light	1	60
	Overall thickness		150
			200

Case history of VMP coatings:

- The bridge crossing over the Volga River, Ulyanovsk

- The Road bridges along the highway Dzhubga-Sochi

- The cable road bridge over the Ob River, Surgut

- The road bridge over the Kama River, Berezniki, Perm Oblast, etc.

Details >>

Friction joints of high-strength bolts and combined friction-welding joints are common for steel bridges erection. Operational capability of bridges depends upon reliability of the joints. Reliability of friction joints is mainly defined by friction coefficient value of contact surfaces. Maximum friction value is achieved by shot or sandblast cleaning of contact surfaces with or without of ZFES application on the plant of producer, thus, metal structures are fully prepared for construction. Application of ZFES reduces hours of labor and excludes destructive for constructors’ health on-site sandblast cleaning.

Frictional properties of ZFES were tested prior to and upon weather exposure. The tests showed that load capacity of friction joints and friction coefficient of surfaces coated with ZFES do not decrease during long-term service. ZFES is recommended for application by Bridges Research and Development Center in Process Data Book IS-385-06 dated January 18, 2006 for erection joint mechanism bolted with high-strength bolts with contact surfaces coated with friction primers in steel bridge structures.

The coating for contact surfaces of friction joints bolted with high-strength bolts.

№	Name of a coat	Qty of coats	Thickness, micron
9	ZFES (zinc-rich ethyl silicate primer)	2	60-80

For protection of concrete bridge structures in atmosphere as well as for water insulation of their parts the company has developed polyurethane coating systems which include several coats of different functions.

Penetrating primer has good sinking ability and fixes in porous surface of concrete thus strengthening the penetrating layer and provides high adhesion of the following coats.

Due to the flaked pigments an intermediate coat provides high damp and water resistance.

Finishing enamels prevent penetration of corrosive substances into the concrete and provide preset decorative properties.

Coating systems for concrete and reinforced concrete bridge structures

№	Name of a coat	Qty of coats	Thickness, micron	Minimum durability, years
1	FERROTAN-PRO (penetrating polyurethane primer)	1	30	15
	POYLTON-UR (polyurethane colorable enamel)	1	60
	POLYTON-UR (polyurethane colorable enamel)	1	60
	Overall thickness		150
2	FERROTAN-PRO (penetrating polyurethane primer)	1	30	15
	FERROTAN (polyurethane composition with addition of micaceous iron oxide)	2	160
	POLYTON-UR (polyurethane colorable enamel)	1	60
	Overall thickness		250

Table remarks

1. In case of high decorative requirements to the structures it is possible to replace the last finishing coat of polyurethane enamel POLYTON-UR with light-fast acrylurethane enamel POLYTON-UR (UV) or acrylic POLYTON-AK.

2. The color varies according to RAL.

The systems were tested to determine their compliance with requirements of concrete coatings set standards in the leading Russian research institute of concrete and reinforced concrete – NIIZHB. The main quality factors of VMP coating systems for concrete were defined. The results show that the coatings:

- are of good adhesion to concrete;

- make the adhesion remain strong even if the coatings are applied to wet concrete;

- considerably enhance concrete water resistance grade, on 7 levels;

- decrease concrete water absorption on 35%;

- increase frost resistance in 1,5-2 times.

Based on aforesaid the coatings are recommended for concrete and reinforced concrete constructions protection in atmospheric conditions and for hydraulic sealing of underground facilities.

Case history of VMP coatings:

- The highway overpasses on Western High-Speed Diameter (WHSD), St. Petersburg;

- The road bridges along the highway Dzhubga-Sochi;

- The fly-over over Dimitrovgradskoe highway, Ulyanovsk;

- The fly-over over Stachki highway, Rostov-on-Don, etc.

Details >>

Steel embedded parts and connecting elements of reinforced concrete constructions are generaly subject to anticorrosion protection. Basic and the most durable protection is zinc coating (galvanizing). VMP recommends applying - cold galvanizing with the help of zinc-rich compositions ZINOL and ZINOTAN. The protection lies in application of zinc-rich paintwork materials to metal. This enables to use unique protective properties of zinc if one doesn’t have the necessary facilities to apply traditional galvanizing. Besides this, tests proved that in highly aggressive conditions, for instance in chlorides and sulphates, the durability of zinc-rich coatings considerably exceed durability of hot galvanizing.

Cold galvanizing (zinc-rich coatings) have undeniable advantages:

- combines good points of zinc-rich, metallic and non-metallic coatings;

- may rival with traditional hot galvanizing in terms of protective properties;

- can be applied both in shop and field invironment.

ZINOL and ZINOTAN coatings for embedded steel parts and connecting elements

Embedded parts and elements	ZINOL, 2-3 coats, overall thickness of the coating is 80-120 microns; ZINOTAN, 1-2 coats, overall thickness of the coating is 80-120 microns.
Not embedded parts and elements exposed to open air	ZINOL and ZINOTAN, ZINOL and ZINOTAN, coating thickness not less than 80 microns with the following application of compatible weather-resistant paintwork material. Overall thickness of the coating - not less than 150 microns.