Which risk is elevated when epoxy coating is damaged on rebar embedded in concrete bridge supports?

💡 Explanation

When epoxy coating is damaged, chloride ions from de-icing salts or seawater can penetrate the concrete and directly reach the steel, triggering accelerated corrosion. Therefore, accelerated corrosion results, rather than tensile strength reduction, alkali-silica reaction, or thermal expansion issues which require other mechanisms or specific materials.

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