半刚性沥青路面混合料的疲劳与开裂分析

Analysis on Fatigue and Break of Mix-material in Half-steel Pitch Road Surface

疲劳破坏是路面结构损伤的主要现象,路面材料的抗疲劳性能直接关系到路面的使用寿命。提高路面的抗疲劳性能必须从两方面加强配合,首先是合理的材料设计,以使混合料达到最佳配合比和最大密度,使沥青混合料具有较高的强度;其次是合理的结构设计,旨在使各结构层的层位与厚度达到理想的程度。

The fatigue is the main damage appearance in road surface structure.The character of re-fatigue of road surface material directly relate to it's service life.There are two ways to reinforce the re-fatigue characters,first of all,the material must be rationalized designed which would provide the mix-material cooperated and reach the max density.It would make mix-material of pitch intensity.Secondly,the structure design must be rationalized.All of them could meet every structural layer to get the idealized level.