How should epoxy-coated bars be handled in the field to preserve their performance?

How should epoxy-coated bars be handled in the field to preserve their performance?

• A. Remove coating before placement
• B. Bend bars sharply
• C. Weld on-site to ensure strong joints even if coating is damaged
• D. Protect coating from damage, avoid bending beyond radii, and avoid field welding on damaged areas

Answer: (D)

Epoxy-coated bars rely on their coating to protect against corrosion, so field handling should preserve that coating at all times. The best approach is to keep the coating intact by protecting it from impact, abrasion, and handling damage, and to follow the manufacturer’s guidelines for bending. Bending beyond the specified minimum bend radius can crack or damage the epoxy coating, creating corrosion pathways. Field welding on damaged areas is avoided because heat from welding can degrade the epoxy and compromise the protective barrier. If damage occurs, replace the affected bars or follow the approved repair procedure instead of attempting field welding. This combination—protecting the coating, adhering to bend radii, and avoiding field welding on damaged areas—preserves the epoxy coating’s performance.

Epoxy-coated bars rely on their coating to protect against corrosion, so field handling should preserve that coating at all times. The best approach is to keep the coating intact by protecting it from impact, abrasion, and handling damage, and to follow the manufacturer’s guidelines for bending. Bending beyond the specified minimum bend radius can crack or damage the epoxy coating, creating corrosion pathways. Field welding on damaged areas is avoided because heat from welding can degrade the epoxy and compromise the protective barrier. If damage occurs, replace the affected bars or follow the approved repair procedure instead of attempting field welding. This combination—protecting the coating, adhering to bend radii, and avoiding field welding on damaged areas—preserves the epoxy coating’s performance.