What is flexible subgrade asphalt pavement?
In traffic safety engineering, pavements are divided into two types according to their mechanical properties: (1) flexible pavements: all kinds of asphalt pavements and gravel pavements belong to flexible pavements; (2) Rigid pavement: Cement concrete pavement belongs to rigid pavement, which has great rigidity and bending resistance, and can directly bear and distribute vehicle load to subgrade pavement structure.