Advanced Anti-Corrosion Coating for Steel Bridge Structures (Japan Technology)

Advanced Anti-Corrosion Coating for Steel Bridge Structures (Japan Technology)**

1. Introduction

Brushable-S is a high-performance protective coating specifically developed for steel bridge components by Okasan Livic (Japan). The material is formulated to provide:

• Long-term corrosion protection

• Resistance to harsh weather, UV, moisture, and airborne salts

• Reliable coating thickness even in hard-to-reach areas

• Easy on-site application without specialized spraying equipment

Brushable-S is optimized for steel plates, stiffeners, gusset plates, bracings, lattice members, handrails, bolts, and exposed joints, especially on steel bridges under demanding environmental conditions.

2. Key Technical Features

2.1 Brush-applied coating for complex geometries

The name “Brushable-S” reflects its design:
A controlled viscosity that allows easy application using a brush or roller, enabling:

• Uniform coating thickness

• Strong adhesion

• Minimal sagging

• Full coverage of steel details

Ideal for steel surfaces where spraying is difficult or impossible.

2.2 Superior Anti-Corrosion Performance

Once cured, Brushable-S forms a dense, durable protective film that:

• Blocks moisture and oxygen penetration

• Prevents electrochemical corrosion

• Resists chloride attack (marine environments)

• Tolerates mild chemical exposure

• Minimizes rust formation and surface degradation

→ Suitable for steel bridges in coastal, industrial, or high-humidity regions.

2.3 Strong adhesion even on moderately prepared steel

Brushable-S adheres strongly to steel surfaces prepared to St 2–St 3 (mechanical cleaning), meaning:

• No need for full abrasive blasting

• Can be applied on active bridges

• Reduces downtime and maintenance complexity

This is a major advantage for steel bridges under operation.

2.4 High durability – Low life-cycle cost

Thanks to its advanced polymer structure, the coating provides:

• Excellent UV resistance

• High flexibility

• Reduced chalking and fading

• Long-term color retention

The result is extended maintenance cycles and lower long-term costs (LCC).

2.5 Optimized for small parts and detailed steelwork

Brushable-S excels in protecting:

• Bolts and nuts

• Corners and edges

• Stiffening plates

• Connection areas

• Narrow bracing elements

Areas where spray coating often fails to achieve uniform thickness.

3. Advantages

4. Applications

Steel Bridges

• Main girders

• Cross beams

• Bracing members

• Gusset plates

• Handrails

• Bolted joints

Coastal and Marine Structures

Resistant to chloride-rich environments.

Operating Bridges Requiring On-Site Maintenance

• Minimal surface preparation needed

• No need to block major traffic

5. Suitability for Vietnam

Vietnam’s environment presents:

• High humidity year-round

• Strong ultraviolet intensity

• Long coastlines with salty air

• High rainfall and rapid degradation of exposed steel

Thus, Brushable-S offers an ideal solution to:

• Slow down corrosion

• Reduce structural deterioration

• Minimize maintenance shutdowns

• Improve durability of steel bridge infrastructure

6. Conclusion

Brushable-S is a premium, brush-applied anti-corrosion coating engineered specifically for steel bridge components. Offering:

• Japanese-grade durability

• Easy application

• Long-term corrosion resistance

• Reduced maintenance costs

→ Brushable-S is a strategic solution for Vietnam’s developing steel-bridge network.

Brushable-S – High-performance protective coating for long-lasting steel bridges.