行业解决方案
Bridge industry solutions

Bridge industry solutions

企业介绍

钢结构桥梁

Time of issue:2021-08-03 10:29:41
The necessity of bridge steel structure anticorrosion

Steel structure bridges have the characteristics of large span, strong carrying capacity, short construction period and long service life, etc., and are widely adopted by countries all over the world.
Steel structure bridges provide convenience for human beings, but the environment such as heat and humidity, acid rain, salt spray, industrial atmosphere, marine atmosphere, etc. is subject to corrosion. If there is no effective anti-corrosion method to protect the steel structure, the service life of the bridge will be long. Decrease in amplitude or even scrapped ahead of schedule.
The zinc shield cold spray zinc anticorrosive coating system has excellent salt spray resistance, acid and alkali resistance and other corrosion resistance and excellent weather resistance, which can effectively solve the problem of corrosion prevention of steel structure bridges. The recoating cycle can reach more than 20 years, effectively extending maintenance The interval period reduces the cost of coating protection during the entire life cycle of the bridge.

Reference System for Coating of Steel Girder Bridges>>
 
Examples of painted parts
Protection plan
Road number
Design thickness(μm)
Upper limit of spraying film thickness(μm)
Outer surface of steel structure (except steel bridge deck with paved)
Surface pretreatment
Sandblasting and rust removal reach Sa2.5 level
Alcohol-soluble inorganic zinc silicate workshop primer
1
20
--
Secondary surface treatment
Sandblasted to Sa2.5 level, surface roughness is Rz 50~80µm
Cold spray zinc
2
80
≤120
Cold spray zinc sealant
2
100
≤150
Fluorocarbon topcoat/polysiloxane topcoat (factory)
1
40
≤60
Fluorocarbon topcoat/polysiloxane topcoat (on-site)
1
40
≤60
Inner surface of steel box girder
Surface pretreatment
Sandblasting and rust removal reach Sa2.5 level
Alcohol-soluble inorganic zinc silicate workshop primer
1
20
--
Secondary surface treatment
Sandblasted to Sa2.5 level, surface roughness is Rz 50~80µm
Cold spray zinc
2
80
≤150
Steel bridge deck (paving area)
Surface pretreatment
Sandblasting and rust removal reach Sa2.5 level
Alcohol-soluble inorganic zinc silicate workshop primer
1
20
--
Secondary surface treatment
Sandblasted to Sa2.5 level, surface roughness is Rz 50~80µm
Epoxy zinc-rich primer
2
80
--
U-shaped rib inner surface
Surface pretreatment
Sandblasted to Sa2.5 level, surface roughness is Rz 50~80µm
Alcohol-soluble inorganic zinc silicate workshop primer
1
30
--
Outer surface of steel guardrail and steel accessory structure
Surface pretreatment
Shot blasting and rust removal reach Sa2.5 level
Alcohol-soluble inorganic zinc silicate workshop primer
1
20
--
Secondary surface treatment
Sandblasted to Sa2.5 level, surface roughness is Rz 50~80µm
Cold spray zinc
2
60
≤120
Cold spray zinc sealant
2
80
≤150
Fluorocarbon topcoat/polysiloxane topcoat (factory)
1
30
≤60
Fluorocarbon topcoat/polysiloxane topcoat (on-site)
1
30
≤60
Steel concrete bonding surface
Surface pretreatment
Shot blasting and rust removal reach Sa2.5 level
Alcohol-soluble inorganic zinc silicate workshop primer
1
20
--
Secondary surface treatment
Sandblasted to Sa2.5 level, surface roughness is Rz 50~80µm
Cold spray zinc
2
80
≤150

 

Reference System for Repair and Painting of Steel Beam Structures>>
 
Examples of painted parts
Protection plan
Road number
thickness(μm)
Steel beam structure
 
Surface pretreatment
Sandblasting and rust removal reach Sa2.5 level
Cold spray zinc primer
1
80-120
Epoxy Mica Intermediate Paint
1
60-80
Fluorocarbon topcoat
1
80

Steel structure bridge painting case

行业解决方案

Steel structure bridge painting case

混凝土桥梁

Time of issue:2021-08-03 10:30:19
The necessity of concrete bridge anticorrosion

Steel structure bridges have the characteristics of large span, strong carrying capacity, short construction period and long service life, etc., and are widely adopted by countries all over the world.
Steel structure bridges provide convenience for human beings, but the environment such as heat and humidity, acid rain, salt spray, industrial atmosphere, marine atmosphere, etc. is subject to corrosion. If there is no effective anti-corrosion method to protect the steel structure, the service life of the bridge will be long. Decrease in amplitude or even scrapped ahead of schedule.
The zinc shield cold spray zinc anticorrosive coating system has excellent salt spray resistance, acid and alkali resistance and other corrosion resistance and excellent weather resistance, which can effectively solve the problem of corrosion prevention of steel structure bridges. The recoating cycle can reach more than 20 years, effectively extending maintenance The interval period reduces the cost of coating protection during the entire life cycle of the bridge.

Reference System for Bridge Concrete Coating>>
 
Examples of painted parts
Protection plan
Road number
thickness(μm)
Urban concrete viaduct surface
Surface pretreatment
High-pressure fresh water flushing, etc.
Water-based acrylic primer
1
50
Grassroots defect repair
Scrape putty to repair defects
Water-based high-performance stain-resistant topcoat
2
100
Port concrete or saline areas, northern areas where deicing salt is sprayed
Surface pretreatment
Clean the surface of the substrate, and all processed surfaces should be free of water, dirt, dust, oil and other contaminants
Silane impregnating paint
2
About 300 g/square
Concrete bridge (long-acting type)
Surface pretreatment
High-pressure fresh water flushing, etc.
Waterborne epoxy sealing primer
1
50
Grassroots defect repair
Scrape putty to repair defects
Waterborne epoxy intermediate paint
2
120
Waterborne polyurethane topcoat
2
80

 

Reference System for Repairing and Painting of Bridge Concrete>>
 

 

Examples of painted parts
Protection plan
Road number
thickness(μm)
Bridge concrete
 
Surface pretreatment
Sandblasting and rust removal reach Sa2.5 level
Epoxy zinc-rich primer
1
80-120
High-strength waterproof putty —— ——
Epoxy Mica Intermediate Paint
1
60-80
Fluorocarbon topcoat
1
80

Other industry solutions

行业解决方案

Other industry solutions

Wuxi Huadong Zindn Technology Co., LTD

Headquarters contact number:

Free hotline:

E-mail:

Add:

9th Floor of Wei chuang Building, No.999 Gaolang East Road,Wuxi, Jiangsu, China

Copyright © 2021 Wuxi Huadong Zindn Technology Co., LTD     苏ICP备08010491号-1

搜索
Search