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Which outcome arises when chloride ions permeate reinforced concrete past the corrosion threshold?

A)Adhesive failure between layers
B)Volumetric expansion causing cracking
C)Reduced concrete compressive strength
D)Increased rebar tensile capacity

💡 Explanation

When a sufficient amount of chloride ions penetrate reinforced concrete reaching the rebar, chloride-induced corrosion initiates because of electrochemical reactions between the steel and chloride, producing iron oxides that occupy a larger volume than the original steel and leading to internal pressure that creates cracking. Volumetric expansion resulting in cracking results, rather than changes in compressive strength, debonding or rebar tensile capacity which are governed by different degradation modes.

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