ICC-ES AC228
Full Name
ICC-ES AC228 – Acceptance Criteria for Corrosion Protection of Steel Foundation Systems Using Polymer (EAA) Coatings
Scope
ICC-ES AC228 defines the acceptance criteria for evaluating the corrosion protection of steel foundation systems using polymer (ethylene acrylic acid, EAA) coatings. These coatings are applied to steel foundation elements like piles and piers to protect them from corrosion in various soil conditions.
The scope of AC228 covers:
- Material requirements: it specifies the chemical composition and physical properties of the EAA coatings, ensuring they meet specific standards for adhesion, flexibility, impact resistance, and water resistance.
- Coating thickness: it outlines the minimum required thickness of the EAA coating to provide adequate corrosion protection under different exposure conditions.
- Performance testing: it details the testing procedures to assess the coating’s performance, including adhesion testing, salt spray testing, and cathodic disbondment testing, to ensure long-term durability and corrosion resistance.
- Application requirements: it provides guidelines for proper surface preparation and application techniques to ensure optimal coating adhesion and performance.
- Quality control: it establishes requirements for quality control measures during the coating manufacturing and application processes to maintain consistency and reliability.
By adhering to AC228, manufacturers can demonstrate that their EAA coatings provide effective corrosion protection for steel foundation systems. This gives confidence to building officials, engineers, and contractors that the coated foundation elements will have an extended service life, even in corrosive soil environments.
Resources
Keywords
EAA coatings; corrosion protection; steel foundation systems; acceptance criteria; adhesion; flexibility; impact resistance; water resistance; coating thickness; salt spray testing; cathodic disbondment testing; surface preparation