Research on the pavement performance of high-ash composite modified rock asphalt mixture

Quanlei Wang; Zhoucong Xu; Jie Wu; Fei Chen; You Zhou; Haifeng Zhang

doi:10.1117/12.2658690

22 December 2022 Research on the pavement performance of high-ash composite modified rock asphalt mixture

Quanlei Wang, Zhoucong Xu, Jie Wu, Fei Chen, You Zhou, Haifeng Zhang

Proceedings Volume 12460, International Conference on Smart Transportation and City Engineering (STCE 2022); 124601Y (2022) https://doi.org/10.1117/12.2658690
Event: International Conference on Smart Transportation and City Engineering (STCE 2022), 2022, Chongqing, China

Abstract

With the ever-increasing highway transport volume and the transportation development towards the heavy-duty direction, pavement rutting, which has become one of the main highway pavement diseases, is increasingly serious and generates a strong impact the traffic safety. The main method currently used to handle pavement rutting is pavement overlay by means of pavement milling and repaving. When this method is used, however, the road needs to be closed to traffic, accompanied by complex construction technologies and a high engineering cost. How to enhance the rutting resistance of asphalt concrete and reduce the later-stage curing cost is a great difficulty faced by asphalt pavement engineering technicians at present. In this study, a high-ash composite modified rock asphalt mixture was prepared and evaluated, followed by the rutting test, immersion Marshall test, freeze-thaw splitting test, and low-temperature bending test. The results showed that the composite modification of common asphalt using natural Buton Rock Asphalt (BRA) could effectively improve the high-temperature performance, low-temperature performance, and resistance to water damage of pavements, especially showing evident advantages in rutting resistance.

Citation Download Citation

Quanlei Wang, Zhoucong Xu, Jie Wu, Fei Chen, You Zhou, and Haifeng Zhang "Research on the pavement performance of high-ash composite modified rock asphalt mixture", Proc. SPIE 12460, International Conference on Smart Transportation and City Engineering (STCE 2022), 124601Y (22 December 2022); https://doi.org/10.1117/12.2658690

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