Moisture damage and aging occurs simultaneously in asphalt binder while it is on road pavement in service life and not easy to avoid. This study tries to minimize those two effects with the utilization of carbon nano tubes (CNT) with asphalt binder with the help of Atomic Force Microscopy (AFM). The base binder was initially modified with 4% SBS polymer. Later on, three percentages by weight of CNT were mixed with the modified binders. A special functionalized (-NH3) AFM probe with spring constant 3.44 N/m is used to accomplish the study. The dry samples adhesion forces are found to be smaller as compared to CNT modified asphalt samples. The recommended dosage is proposed any value between 0.5 to 1.5% by weight to resist moisture damage and aging in field. © 2018 Institution of Engineering and Technology. All rights reserved.

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