Highway tunnels are typical semi enclosed traffic spaces, where the “black hole/white hole” effect at the entrance often coexists with exhaust gas retention, long-term affecting driving safety and environmental quality.
By the end of 2024, there will be 28700 operating highway tunnels in China, and the proportion of long and large tunnels will continue to rise.
The current tunnel pavement is still dominated by hot mix asphalt mixture, which is sensitive to temperature and service environment.
Under the combined effects of high humidity, high temperature, and exhaust corrosion, it is prone to diseases such as rutting, cracking, and aging, making it difficult to meet the higher requirements for durability, greening, and functionalization of tunnel pavement.
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