In north cold area pavement is usually distressed because of heave factor, and the base may reduce water heave function and increase pavement service life.
北方寒冷地区路面损坏主要是由于冻胀等因素引起的，这种基层可以减小水分的冻胀作用，增加路面使用寿命。
2
This would give an additional boost to the net exports of distressed regions within the euro area, amplifying the remedial role of depreciation.