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← TechnologyWhich outcome occurs when excessive vibration affects a pre-stressed concrete beam assembly supporting a high-speed rail line?
A)Resonance-induced delamination accelerates cracking✓
B)Creep-induced deformation ceases entirely
C)Carbonation mitigates steel reinforcement corrosion
D)Hydration restricts aggregate stress transfer
💡 Explanation
Resonance-induced delamination occurs because sympathetic frequency matching amplifies micro-cracks along interfaces, exploiting the principles of material fatigue under cyclic loading; therefore, delamination accelerates cracking, rather than reduced deformation because of creep within concrete.
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