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我国高速公路一般设计寿命为15年,但许多高速公路通车一两年后即出现大面积早期损坏现象,其真正寿命只有7年～8年时间,与期望值相差甚远。国内诸多专家、学者对高速公路沥青路面早期损坏原因进行了调查和分析,发现造成这种损坏的原因是多方面的。为确切地了解究竟是什么原因造成我国高速公路沥青路面的早期损坏,该怎样预防和解决这种早期损坏,我们特设计了如下问卷调查。
The general design life of expressways in our country is 15 years. However, many expressways have been damaged in a large area in a year or two after being opened to traffic. The real life span is only 7 years to 8 years, far away from the expectation. Many domestic experts and scholars have made an investigation and analysis on the causes of early damage to highway asphalt pavement and found that the causes of such damage are manifold. In order to know exactly what caused the early damage to asphalt pavement of Chinese expressway and how to prevent and solve such early damage, we specially designed the following questionnaire.