沙漠戈壁公路沥青路面裂缝成因分析及处治措施

我国沙漠戈壁公路在建成不久后路面病害就显现出来,特别是裂缝类病害,尤为严重.以G215国道柳园至敦煌公路沥青路面裂缝为例,横向裂缝、纵向裂缝广泛分布.调查分析裂缝的特征,分析出沙漠戈壁的极端气候,路面材料选择不当,盐渍土对路基、路面的侵蚀及过往施工质量问题是沥青路面裂缝病害的成因.根据裂缝形成的原因,提出沙漠戈壁公路沥青路面裂缝的处治措施,可为同类工程提供经验.

Cause Analysis and Treatment Measures of Asphalt Pavement Cracks in Highways in Gobi Desert

The pavement disease will appear soon after the highways in the Gobi Desert of China are built, especially the cracks, especially serious. Taking the asphalt pavement cracks of G215 Liuyuan to Dunhuang Highway as an example, the transverse crack and longitudinal crack are widely distributed. The characteristics of cracks are investigated and analyzed. The analysis shows that the climate of the Gobi Desert is extreme and the selection of pavement material is improper. The erosion of saline soil to subgrade and pavement, and the quality of construction in the past are the causes of asphalt pavement crack. Based on the crack formation, the treatment measures for the asphalt pavement cracks in the highways in Gobi Desert are put forward, which can provide the experience for the similar projects.