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。
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。
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.
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