某高速公路路面病害成因分析与治理措施

以某二级公路改扩建为高速公路后产生路面病害的治理工程为背景，采用多种方法对病害路段进行检测。现场检测和道路结构层材料室内试验结果表明:路表降水沿裂缝进入路面内部，路面排水不畅，加上路基路床下填土透水性不佳，导致路基路床土层含水率偏高是产生病害的根本原因。提出有针对性的治理病害的措施，经治理后病害得到有效控制，运营情况良好。

Cause Analysis and Control Measures of Road Diseases of an Expressway

In this paper, based on the road disease control project of a Class Ⅱ highway which was expanded into an expressway, the disease sections are tested with multiple methods. The field test and test results in the material room of road structural layer show that the road precipitation enters into the interior of the road along the cracks, leading to impeded drainage of road and the bad water permeability of the filled earth under the roadbed, leading to higher moisture content of the soil layer of the roadbed, which is the root cause of the diseases. Then the targeted disease control measures are proposed and the diseases are effectively controlled, resulting in good operation conditions.