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基于FWD的沥青层反算模量修正系数

, PP. 24-29

Keywords: 道路工程,沥青混凝土,FWD,室内试验动弹模量,无损检测反算模量,模量修正系数K,路面结构承载能力

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Abstract:

针对室内沥青混合料试验动弹模量与无损检测反算模量存在一定的差异,通过试验路的铺筑、落锤式弯沉仪(FWD)现场测试、试验路的钻芯取样、沥青混合料的旋转压实成型、室内动三轴试验、各沥青层模量的复合和试验路结构模量的反算,得到了沥青混凝土层室内试验动弹模量ES与无损检测反算模量EB,并对二者试验结果处理分析,得到了沥青层反算模量修正系数K,即K=EC/EB。研究结果表明根据K的取值可以确定现有路面实测状况下路面结构沥青层的动弹模量,更加方便路面承载能力的评定,同时也为路面加铺设计中相应的设计参数提供了依据。

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