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← ScienceWhich consequence results when atmospheric moisture increases near concrete with de-icing salts?
A)Increased ionic conductivity through porous surface✓
B)Depletion of calcium hydroxide concentration
C)Formation of protective oxide layer
D)Enhanced carbonation reaction rate
💡 Explanation
Increased moisture containing dissolved salts leads to increased **ionic conduction** within the concrete. This accelerates corrosion of reinforcing steel because the higher ionic conductivity facilitates electron transfer required for oxidation, rather than forming protective layers or hindering carbonation.
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