ISO 14654:1999 PDF

Overview

ISO 14654:1999 specifies requirements for fusion‑bonded epoxy‑coated steel used as reinforcement in concrete - including post‑fabricated and pre‑fabricated bars, wire and welded fabric. The standard covers materials, surface preparation, powder application, coating properties, permissible damage/repair, testing and manufacturer documentation. It permits flexible (Type A) and non‑flexible (Type B) epoxy coatings (Type B must not be fabricated after coating).

Key topics and technical requirements

• Coating type: Fusion‑bonded epoxy powder coatings classified as Type A (flexible) or Type B (non‑flexible); Type B cannot be bent/fabricated after coating.
• Coating thickness: Finished cured coating thickness 170–300 µm (repair areas excepted).
• Surface preparation: Abrasive blast cleaning (steel grit, Rockwell C ≥55 recommended); residual mill scale ≤ 5%; target anchor profile R_a ≈ 50–70 µm.
• Application timing: Powder applied soon after surface preparation to avoid visible rust; environmental limits (high relative humidity restricts coating operations).
• Coating continuity: Maximum of 4 holidays per linear metre for bars/wire (stricter limits for short pieces and welded fabric intersections).
• Adhesion and durability: Adhesion evaluated by cathodic disbondment and salt spray testing (manufacturer should demonstrate disbondment radius