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← TechnologyWhich risk increases significantly when excessive concrete creep occurs around pre-stressed steel tendons?
A)Increased tendon stress relaxation rate✓
B)Amplified beam self-weight deflection
C)Elevated risk of strand corrosion
D)Reduced ultimate shear strength capacity
💡 Explanation
Excessive concrete creep progressively reduces the pre-stress force due to a process called stress relaxation. Because creep shortens the concrete, therefore the steel loses tension at an increased rate, rather than maintaining its initial tension efficiently over its lifespan.
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