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抗滑降噪型隧道沥青混合料设计

, PP. 36-41

Keywords: 道路工程,隧道沥青路面,试验研究,抗滑,降噪,空隙率

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Abstract:

？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。

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