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Which outcome accelerates oxidation in a prestressed concrete beam when chloride penetration compromises the passivating layer?

A)Reduced beam shear load capacity
B)Increased concrete compressive strength
C)Enhanced beam self-healing properties
D)Improved rebar passive layer stability

💡 Explanation

Reduced beam shear load capacity increase because chloride ions induce chloride-induced corrosion. The **depassivation** removes the protective oxide layer, therefore rendering the prestressing steel susceptible to premature failure due to rust rather than maintaining its designed tensile strength under load.

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