At the same time, making the impacting and penetration test for asphalt mixture specimens which have been in the different freeze-thaw cycles, to get the relationship of average penetration depth and fracture tensile strength. 同时,通过对受到不同冻融循环的沥青混合料试件进行冲击贯入试验,得到均贯入深度与劈裂抗拉强度的关系。