Deicing salt and snowbroth are frequently used in the road of northern region in winter, and thus the erosion has largely sprung up.

• 我国北方公路冬季经常积雪、结冰,养护部门在保通的过程中,被迫大量使用除冰盐、融雪剂,因此造成路面大面积严重剥蚀。