Insufficient pavement strength is the main cause of cracks. When vehicles are driving on the pavement, the pavement is overloaded, so there will be transverse or longitudinal network cracks. If cracks appear on the pavement, it will affect the safety of vehicle driving. And the rainwater will enter the interior along the cracks, which will affect the structure of the pavement and even lead to collapse. At the same time, if the soft soil foundation is not properly treated during the construction, longitudinal cracks will also appear after the vehicle runs and rolls the road, affecting the road safety.

Rutting and waves often appear on the pavement of road engineering. The rutting problem is mainly caused by the wheel pressure of the vehicle. The vehicle will output a certain pressure to the pavement during driving. When the load borne by the pavement exceeds its bearing limit, it will lead to pavement deformation and rutting. When the road surface is rutted, the rolling back and forth of vehicles will become more and more obvious in the long run, and the road roughness will become more serious. The main causes of rutting and wave problems are as follows: the overload of heavy trucks leads to the pavement bearing pressure exceeding the limit, resulting in obvious deformation under the rolling of vehicles, and rutting occurs over time. Secondly, asphalt materials have their own problems, which makes the bearing capacity of pavement difficult to meet the actual demand. However, if the subgrade compaction does not meet the requirements, rutting and wave problems will also occur. When the subgrade has not been effectively compacted, the pressure output in the process of vehicle driving makes the road deform and eventually form rutting problem.