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← ScienceWhich instability accelerates when road salt exceeds solubility limits?
A)Aggressive concrete spalling degradation✓
B)Increased asphalt binder oxidation
C)Accelerated vehicle tire delamination
D)Enhanced road material UV absorption
💡 Explanation
Ionic compounds like NaCl increase freeze-thaw cycles. The **osmotic pressure** from highly concentrated salt solution causes hydraulic pressure, which exceeds concrete's tensile strength, therefore leading to spalling, rather than UV or oxidation because those are chemical pathways.
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