Which risk increases when excessive moisture permeates a post-tensioned concrete beam containing unbonded tendons?

💡 Explanation

When moisture penetrates a post-tensioned beam, chloride ions ingress leads to corrosion of the unbonded tendons by disrupting their passivating layer. Therefore, corrosion-induced cracking develops rather than ASR, embrittlement, or shear failure which depend on alternative chemical reactions or loading conditions.

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