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RoadTest Forum 沥青路面透水性快速检测技术
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沥青路面透水性快速检测技术

Grace
Grace over 14 years ago

沥青路面因为行车舒适、容易维修、光线良好等原因而被广泛采用,尤其在高速公路上更是如此。但是,沥青路面由于设计时确保为在高温时自由沥青提供足够的空间而留有一定空隙,同时,施工控制不一致也将导致空隙率偏大,这将为裂缝、坑槽、松散、层间脱落、剪切等水损害的发生创造了条件。当雨后沥青路面在饱水状态下承受重载车辆冲击与动水压力的反复作用时,沥青膜与矿料渐渐剥离的同时发生液化,集料就将飞散,形成松散的凹坑,若不及时予以修补,极易发展扩大成坑槽,造成更大的损坏,当这个过程辅以冻融条件时,病害发展的速度还会加快。
  

 

目前在国内外沥青路面透水检测的方法中,只有路面渗水试验这一种,特点是方法简单、结果直观,但是检测效率较低、代表性差、投入人力较大,并在检测时需要封闭交通。
  

 

根据沥青路面养护技术的需要并针对传统渗水试验检测的不足,河南省高等级公路养护工程研究中心推出了沥青路面透水性快速检测技术,采用车载式快速无损检测设备(沥青路面透水性红外检测仪)对路面透水性进行快速检测与评价,该技术是通过采集雨后沥青路面温度,根据温度差异形成差热图谱,从定量和定性两方面评价路面的透水性。其特点是:快速无损、不干扰交通、能够满足整条道路检测需要,一方面为整条沥青道路透水性评价提供了有效的检测手段,另一方面可以为相关道路病害处治提供技术依据。此项技术于2008年2008年6月6日通过河南省交通厅的项目鉴定并被评价为国际先进水平。

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