黄土地区高速公路下伏不良地质体是高等级公路建设中经常遇到的地基问题，其病害类型主要是路基塌陷形成陷坑和路基边坡坍塌。
The harmful geology structure under the freeway is a ground problem existing in the freeway construction in the loess region, and it mainly results in the collapse of the roadbeds and the slopes.
路用性能评价表明，沥青的高温稳定性、低温抗裂性、抗老化性和感温性等性能完全满足铺筑高等级公路的要求。 该产品正应用于国内高速公路的建设。
The evaluation showed that the high temperature stability, low temperature cracking resistance, aging resistance and temperature susceptibility meet the requirements of high grade road asphalt.
泥混凝土路面裂缝是高等级公路路面易出现的一种破坏现象。它极大地缩短了高速公路的有效寿命。并给行车安全造成了隐患。
The crack of cement concrete pavement is one of common-seen hazards. It has greatly shortened the effective life-span of the expressway and brought the hidden danger to traffic safety.
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