Research and application of post-doped fire-retardant epoxy asphalt tunnel pavement

Yong Ma; Yanbin Zhao; Linyan Zhang; Yinqing Zhao; Guangxue Yuan; Yongjun Wang; Jiliang Feng

doi:10.1117/12.2614179

10 November 2021 Research and application of post-doped fire-retardant epoxy asphalt tunnel pavement

Yong Ma, Yanbin Zhao, Linyan Zhang, Yinqing Zhao, Guangxue Yuan, Yongjun Wang, Jiliang Feng

Proceedings Volume 12050, International Conference on Smart Transportation and City Engineering 2021; 120504G (2021) https://doi.org/10.1117/12.2614179
Event: 2021 International Conference on Smart Transportation and City Engineering, 2021, Chongqing, China

Abstract

The rate of traffic accident is typically very high in tunnels due to the relatively closed environment, small space and poor internal light, particularly in mountainous areas that the pavement in long tunnels. Normal asphalt concrete pavement performs poorly in terms of resisting both fire and water damage. There is a strong need to propose a novel asphalt concrete for tunnel paving to achieve better fire resistance and long-lasting pavement. A new fire-resistant epoxy asphalt material containing a low resin content of 6-11% was developed in this study. Consequently, a novel post-doped construction technology is proposed to meet the harsh requirement of construction timing of epoxy asphalt. The properties of the epoxy asphalt concrete under different temperature conditions were evaluated for water stability, kerosene immersion, and fire resistance test, as well as accelerated loading test in water at temperature of 60℃. The epoxy asphalt was successfully used to construct a 3cm-thick pavement by the post-doped constructing method in a highway tunnel in Yunnan province, China. The results of this study provide an alternative asphalt concrete mixture and construction method for tunnel paving with the features of fire-resistant and long-lasting.

Citation Download Citation

Yong Ma, Yanbin Zhao, Linyan Zhang, Yinqing Zhao, Guangxue Yuan, Yongjun Wang, and Jiliang Feng "Research and application of post-doped fire-retardant epoxy asphalt tunnel pavement", Proc. SPIE 12050, International Conference on Smart Transportation and City Engineering 2021, 120504G (10 November 2021); https://doi.org/10.1117/12.2614179

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