Which mechanism reduces bond strength when epoxy-coated rebar corrodes inside reinforced concrete?

💡 Explanation

When epoxy-coated rebar corrodes, coating delamination occurs because expansive rust formation creates pressure at the rebar-concrete interface, weakening the bond. Therefore delamination and expansive rust results, rather than hydrogen embrittlement, galvanic action, or chloride diffusion which address steel degradation or concrete penetration.

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