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基于低碳视角的透水慢行系统结构生态效果评价

Keywords: 道路工程,透水路面,试验,慢行系统,生态效果,低碳视角

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Abstract:

为完善透水慢行系统结构生态效果评价体系,通过渗透系数试验、现场渗透试验、吸声系数试验及路面温度调查,研究透水慢行系统的排水效果、降噪效果和降低城市热岛效应,并提出相应分级标准。结果表明透水慢行系统生态效果明显,沥青混合料的渗透系数随空隙率和连续空隙率的增大而增大;无砂混凝土与级配碎石叠合基层的渗透速率最快,级配碎石基层次之,水泥稳定碎石和级配碎石叠合基层最慢;沥青混凝土吸声系数峰值与均值总体随空隙率增大而提高,相同连续空隙率下,小粒径吸声优于大粒径,相同空隙率下小粒径性能反而下降,透水性混凝土的吸声系数随空隙率增大而增大;透水路面路表与中面层温度差值远远大于其他几种路面结构。

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