What is an anti-carbonation coating?

An anti-carbonation coating is a high-performance protective paint applied to concrete surfaces. It is designed to be permeable to water vapor (allowing the concrete to 'breathe') but impermeable to carbon dioxide (CO2). By blocking CO2 ingress, it prevents the process of carbonation, thereby protecting the steel reinforcement from corrosion. These coatings are essential for extending the lifespan of repaired structures, especially in urban environments with high CO2 levels.