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← ScienceWhich risk significantly increases when de-icing salt contaminates steel rebar?
A)Increased galvanic circuit corrosion rate✓
B)Decreased concrete compressive strength
C)Elevated concrete thermal expansion
D)Reduced rebar yield strength slowly
💡 Explanation
Galvanic corrosion accelerates because chloride ions from the salt solution form conductive bridges, facilitating electron flow between anodic to exposed steel cathodic regions; therefore, corrosion increases rather than reduces steel strength because other options consider bulk material weakening.
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