Which risk increases when a prestressed concrete bridge deck experiences sustained chloride ingress?

💡 Explanation

When chloride ingress occurs, the depassivation of the high-strength steel tendon wires leads to pitting corrosion because the protective oxide layer breaks down, reducing the cross-sectional area and load-bearing capacity. Therefore corrosion-induced cracking results, rather than shear cracking, brittle failure, or altered ductility which require different degradation mechanisms.

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