Which outcome occurs when chlorides permeate reinforced concrete structures leading to rebar depolarization?

💡 Explanation

When chlorides permeate concrete, chloride ions breakdown the passive film protecting the rebar, because electrochemical corrosion accelerates, leading to rust formation and increased volume introducing expansive stress on the concrete and cracking. Therefore accelerated rebar corrosion initiates expansive cracking, rather than halting propagation, influencing passivation, or decreasing migration which involve different mechanisms.

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