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Influence of Buton rock asphalt on physical and mechanical properties of asphalt binder and asphalt mixture

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Document pages: 7 pages

Abstract: In order to study the effects of different rock asphalt content on the physical and mechanical properties of asphalt binder and asphalt mixture, physical and mechanical tests and analysis were carried out. The effectiveness of rock asphalt modified pavement is verified by field cases. The results show that activation treatment can effectively improve the molecular polarity of Buton rock asphalt. Buton-rock asphalt modified asphalt binder was prepared by wet process, and its high temperature and anti-aging properties were significantly improved. The modified asphalt prepared by adding 30 rock asphalt achieves the best balance between service performance and segregation. Field application of Buton rock asphalt modified asphaltt pavement showed the good workability and service performance. This research demonstrated the ability of rock asphalt improving asphalt pavement on multiscales. It is helpful for the broader application of rock asphalt in asphalt pavement.

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