这种基层具有较大的空隙率，能及时排走滞留在路面内部的水分，并能有效地减少反射裂缝的发生。

The base has bigger percent air voids and can promptly detain pavement interior water, and can effectively reduce the reflection crack.

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以横向裂缝、坑槽、车辙的破损率作为因素，建立了西北地区高速公路沥青路面的路况评价模型。

A pavement condition evaluation model is established for the expressway in Northwest area, taking the damage rates of transverse cracking, potholes and rutting as main considering factors.

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