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寒冷积雪地区的路面,机场地面及其它附属构筑物如隧道、路坡等土木工程中,常由于冻胀而导致铺装面的破坏.冻胀本身所造成的破坏主要是道路横截面方向上产生不均匀的冻胀,此值在正中间最大、故在道路中心线附近产生裂缝.在地基中,因冰晶生长面把多量的水从地下深处吸引到冰晶生长处来,春融期间,这个冰层是从地表开始融化,致使其附近的土层呈含水饱和状态,这种融化水因下层有未融化之冻层阻碍排水,而在地基和垫层中形成滞水,若有载重车通过、则面层、垫层底面的拉应力增加以致破坏了路面,使路面
In the cold snow-covered areas of the road, airport grounds and other ancillary structures such as tunnels, road slopes and other civil engineering, often due to frost heave caused by the destruction of the pavement surface. The frost damage itself caused by the destruction of the main road cross-sectional direction Inhomogeneous frost heave, this value is greatest in the middle of the center, so cracks occur near the centerline of the road. In the foundation, because of the ice crystal growth surface, a large amount of water is attracted from the depths of the ground to the place where the ice crystals grow. During the spring, this The ice layer begins to melt from the ground surface, causing the nearby soil to be saturated with water. This type of meltwater impedes drainage due to the unfrozen layer of frozen water in the lower layer, and forms a stagnant water in the foundation and underlayment. , then the tensile stress on the bottom surface of the surface layer and the cushion layer increases so as to damage the road surface and make the road surface