Which risk increases when post-tensioned concrete beam tendon ducts inadvertently fill with water prior to grouting?

💡 Explanation

When tendon ducts are filled with water, electrolytic corrosion occurs because the dissimilar metals (steel tendons, steel duct) act as electrodes in a galvanic cell, with water acting as the electrolyte, leading to accelerated tendon weakening. Therefore, electrolytic corrosion results, rather than strength reduction, deflection, or rebar bond failure, which involve different degradation mechanisms.

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