Interlayer Working Conditions Classification and Treatment Measures of Airport Asphalt Pavement Overlay

Table 4

Classification of single-factor working condition of overlay.

Single factor working condition grade	I	II	III
Assignment	0–33	33–67	67–100
Overlay thickness (cm)	5–7	8–15	15–20
Modulus of overlay (MPa)	800–1000	1000–1500	1500–2000
Horizontal force coefficient	0.3–0.5	0.2–0.3	0–0.2
Single wheel load of main landing gear At maximum take-off weight (kN)	200–300	100–200	50–100