Repair Strategy for Epoxy Anticorrosive Coatings on Steel Structures

Area of Science:

• Materials Science
• Corrosion Engineering
• Protective Coatings

Background:

• Epoxy anticorrosion coatings are vital for steel structure protection.
• Degradation necessitates effective repair strategies to maintain structural integrity.
• Evaluating different repair methods is crucial for long-term performance.

Purpose of the Study:

• To assess the performance of epoxy anticorrosion coating repair methods.
• To compare partial versus integral repair strategies.
• To establish repair criteria and propose a repair strategy for steel structures.

Main Methods:

• Testing two repair strategies: partial and integral repair.
• Measuring gloss loss rate, color difference, and rust area rate of repair coatings.
• Comparing anticorrosion performance based on repair methods.

Main Results:

• Marathon 500 (M500) and Jotamastic 90 GF (J90GF) are suitable for partial repair.
• Jotamastic 90 (J90) and Marathon 500 (M500) are suitable for integral repair.
• Defined repair criteria and proposed a repair strategy for epoxy anticorrosive coatings.

Conclusions:

• Specific epoxy paints demonstrate suitability for distinct repair methods.
• The findings support optimized repair strategies for extending coating lifespan.
• Established criteria aid in selecting appropriate repair techniques for steel structures.