Table. 8 The 7 d unconfined compressive strength of cement-and fly ash-stabilized materials (MPa).
Structural layers | Highway classification | Very heavy traffic | Heavy traffic | Medium and light traffic |
|---|---|---|---|---|
Base layer | Expressways and first-class highways | 5.0 ~ 7.0 | 4.0 ~ 6.0 | 3.0 ~ 5.0 |
Subbase layer | Secondary and subsecondary highways | 4.0 ~ 6.0 | 3.0 ~ 5.0 | 2.0 ~ 4.0 |
