Long-term corrosion resistance of reinforcing steel in alkali-activated slag mortar after exposure to marine environments

The long-term corrosion resistance of reinforcing steel embedded in alkali-activated slag (AAS) mortar and ordinary Portland cement (OPC) mortar, when subjected to aggressive marine environments (chloride exposure and atmospheric exposure) for 54 months, was evaluated by electrochemical impedance spectroscopy. Corrosion morphology at the steel-mortar interface, composition of steel corrosion products and microstructure of mortar substrate were...