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Which consequence results when excessive lateral force impacts a pretensioned concrete bridge?

A)Strand slippage induces sudden debonding
B)Rebar yields causing concrete spalling
C)Grouted ducts restrict crack propagation
D)Shear keys prevent deck shifting

💡 Explanation

Strand slippage induces sudden debonding because the pretension force is released upon exceeding frictional capacity within the anchorage; therefore, immediate loss of prestress occurs rather than gradual deformation, as with rebar yielding.

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