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← TechnologyWhich consequence results when excessive vibration causes cumulative micro-cracking in a concrete beam reinforced with fiberglass rebar undergoing cyclic loading?
A)Decreased beam shear capacity initially
B)Reduced long-term creep resistance
C)Onset of chloride-induced corrosion
D)Progressive loss of bond strength✓
💡 Explanation
Progressive loss of bond strength occurs because the **debonding mechanism** at the rebar-concrete interface is accelerated; therefore, effective stress transfer decreases, rather than enhanced shear capacity, due to micro-crack intensification.
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