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← TechnologyWhich risk increases if sustained overload weakens the bond between tendons and grout in a prestressed concrete beam?
A)Increased beam deflection and cracking✓
B)Sudden tendon rupture due to corrosion
C)Reduced concrete compressive strength
D)Accelerated creep deformation of the steel
💡 Explanation
When overload causes bond weakening, slippage between the tendons and concrete occurs because force transfer is compromised, increasing beam deflection and crack formation under stress. Therefore increased deflection/cracking results, rather than rupture, strength loss or creep since these require different material failure modes.
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