Which risk increases when post-tensioned concrete tendons experience unexpected moisture ingress during grouting?

💡 Explanation

When post-tensioned tendons experience moisture ingress, galvanic corrosion occurs between dissimilar metals in the presence of an electrolyte, reducing the tendon's cross-sectional area and tensile strength. Therefore, bond failure risk increases due to tendon corrosion, rather than concrete cracking, creep reduction, or shear capacity increase, which depend on different mechanisms.

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