In our opinion, this structure is unsatisfactory for two reasons : (1) We believe that the material which gives the X-ray diagrams is the salt, not the free acid. Without the acidic hydrogen atoms ...

4.1. GA + SMA The detailed pavement structure is shown in Figure 1. Figure 1. Pavement structure diagram of GA + SMA with high-elastic bitumen method. The wearing course adopts SMA10 with high-elastic ...