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← TechnologyWhich risk escalates when thermal cycling acts on reinforced concrete?
A)Spalling of the concrete surface✓
B)Reduction of concrete's alkaline reserve
C)Accelerated oxidation of the cement
D)Decreased rebar tensile strength
💡 Explanation
Spalling risk increases due to differential thermal expansion between rebar and concrete. The mechanism of action-reaction stresses causes cracking, because internal stress overcomes the binding capacity; therefore, spalling results, rather than strength loss or cement oxidation.
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