Which outcome results when post-tensioned concrete tendon sheathing is inadequately grouted after stressing?

💡 Explanation

When grout is inadequate, moisture ingress promotes galvanic corrosion because the tendons are exposed to oxygen and chlorides, leading to widespread corrosion. Therefore corrosion propagation occurs rather than spalling, slippage, or creep which are due to distinct mechanical or material deficiencies.

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