Abstract
Asphalt is the main building material due to its excellent performance. However, it is prone to aging, which leads to a series of pavement problems such as cracking, rutting, pit and slurry, then consequently shortening the service life of the pavement. Therefore, improving asphalt aging resistance is one of the most important directions in the asphalt research field. In order to explore the anti-aging properties of nano-TiO2 and basalt-modified asphalt, 1% nano-TiO2 and 2% basalt were selected to modify the base bitumen, and the modified asphalt was prepared by a high-speed shear mechanism. The modified asphalt before and after aging was analyzed by a dynamic shear rheometer (DSR). Research shows that adding modifiers can improve the asphalt anti-aging resistance, and the difference between the two modifiers in the short-term aging resistance is not significant. At the same time, nano-TiO2 has a better effect on the long-term aging resistance of asphalt.
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