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针对隧道路面噪音大、抗滑性能差、发生火灾时易引起沥青产生浓烟等缺陷,设计了抗滑降噪型沥青混合料,采用大空隙沥青混合料结构降低隧道路面噪音、提高抗滑性能,并采用阻燃剂降低隧道火灾危险性。对抗滑降噪型沥青混合料的降噪性能、抗剪性能、水稳定性能、渗水性能、抗滑性能等综合性能与空隙率的关系进行研究,确定合理空隙率,并铺筑试验路进行验证。结果表明:抗滑降噪型隧道沥青路面比普通隧道沥青路面噪音降低约6dB,抗滑性能提高20%;混合料的目标空隙率宜控制在19%,施工现场路面空隙率宜控制在16%～21%。在隧道中采用该混合料可有效提高隧道路面的使用性能,改善隧道运营环境。
For the tunnel road surface noise, poor skid resistance, in the event of a fire easily lead to smoke and other defects caused by asphalt, skid-resistant design of the noise reduction asphalt mixture, the use of large-gap asphalt mixture to reduce tunnel road noise and improve skid resistance , And the use of flame retardant to reduce the risk of tunnel fire. The relationship between noise reduction performance, shear resistance, water stability, seepage performance, skid resistance and other properties of the anti-sliding noise-reducing asphalt mixture and porosity was studied to determine the reasonable porosity and to pave the way for testing . The results show that the anti-skid and noise-reducing asphalt pavement has a noise reduction of about 6dB and an anti-skid performance of 20%, the target porosity of the mixture should be controlled at 19% and the pavement porosity of the construction site should be controlled at 16% ~ 21%. The use of the mixture in the tunnel can effectively improve the service performance of the tunnel and improve the tunnel operating environment.