高速公路沥青路面车辙病害的试验分析

车辙是高速公路沥青路面最主要病害之一，通过对连霍高速公路郑州段沥青路面的调查与室内试验分析，研究了沥青路面产生车辙的原因。对病害路段钻取芯样进行相关室内试验，结果表明:沥青用量大、沥青软化点低、混合料级配不合理是产生车辙的内因；路面调查显示重载车辆行驶速度慢，基层和面层的粘结强度低是产生车辙的外因。因此，防治车辙，不仅要考虑原料用量和级配，还要严格控制车载和车速。

Test Analysis of Rut Diseases on Expressway Asphalt Pavement

Rut is one of the main diseases of expressway asphalt pavement.Through investigation and indoor test analysis of asphalt pavement in Zhengzhou Section of Lianyungang-Horgos Expressway,the causes of rut on asphalt pavement are studied.Through indoor test on core sample of affected section,it is indicated from result that greater asphalt amount,lower asphalt softening point and unreasonable mixture proportion are the internal causes of tracks.Pavement investigation shows that slow travel speed of heavy load vehicles and low adhesive strength of base and surface are the external causes of rut.Therefore,rut prevention shall not only consider material consumption and proportion but also strictly control vehicle load and speed.