摘要
针对某城市重载快速道沥青路面初期破坏情况和结构特点,对其分别进行了沥青面层厚度、路面芯样压实度、现场取板车辙实验、二灰碎石基层抗压强度实验,沥青面层抗剪强度贯入实验等实验研究,实验结果表明多项指标未达到规范要求。结合路面现场踏勘和分析得出道路施工各环节缺乏控制、材料差、低温施工和压实度不足是造成路面初期严重破坏的主要原因,在今后类似工程中必须引以为戒。
In view of the failure condition and structural characteristic of asphalt pavement of heavy-loaded express road in one city, measurement of thickness and compactness of asphalt surface layer,lab rutting test on field samples,uniaxial penetration test of asphalt core samples,compression strength test of lime-fly ash concrete were carried out.Some testing index results didn't satisfy the requirements of specification and design.Field investigation and test analysis show that lack of construction control in municipal road, low-temperature paving and poor compaction of asphalt concrete is the main cause of asphalt pavement serious initial failure under heavy-load traffic,which was a costly lesson to similar municipal road engineering.
出处
《上海公路》
2011年第3期19-22,12,共4页
Shanghai Highways
关键词
重载快速道
沥青路面
初期破坏
贯入实验
Heavy-loaded express road
Asphalt pavement
Initial failure
Uniaxial penetration test
