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This work aims to consider the impact of nano-alumina (NAs) on mechanical properties of asphalt concrete and electrochemical behavior of modified asphalt mixtures in deicer solution. Dynamic modulus and electrochemical impedance spectroscopy (EIS) tests were employed to study the effects of NAs on asphalt concrete. The lower phase angle and higher dynamic modulus was found in asphalt mixtures with 4.0 wt% NAs than that of without NAs which caused high resistance in deformation of asphalt concrete. The EIS results indicated that a slight amount of the NAs in asphalt concrete improved significantly corrosion resistance and enhanced durability of asphalt pavement. These findings indicate that the NAs were more efficient to enhance the mechanical characteristic, decrease the porosity of asphalt mixtures and improve uniformity and compaction of asphalt concrete.

Investigation of Effect of Nano-alumina Additives on Dynamic Performance and Corrosion Resistance of Asphalt Coating on Carbon Steel