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← TechnologyWhich risk increases when prestressing steel exceeds yield strength?
A)Reduced composite beam shear capacity
B)Increased concrete creep deflection✓
C)Immediate anchor slippage occurs
D)Long-term tendon stress relaxation
💡 Explanation
Excessive prestressing causes increased concrete stress elevating time-dependent deformation, involving the mechanism of creep. Because the concrete experiences unusually high compression, creep related shortening increases; therefore deflection increases, rather than decreasing shear issues.
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