However,reflection crack occurs in these new overlays due to the movement of existing pavements under environmental or traffic loads,and/or a combination of both.

• 这种修复方法最主要的问题是加铺层反射裂缝的形成,即原路面中存在的裂缝在交通荷载、环境因素以及二者的共同作用下扩展并延伸到新的面层中。