Influencing Factors of Interfacial Behavior between Geogrid and Coal Gangue

Table 2

Mechanical indices of the coal gangue.

Maximum dry density (ρdmax), g/cm^3	Apparent density (ρa), g/cm^3	Apparent dry density (ρad), g/cm^3	Bulk density (ρb), g/cm^3	Uniformity coefficient (Cu)	Curvature coefficient (Cc)	Cohesion (c), kPa	Angle of friction (φ)°
2.03	2.665	2.372	2.197	14.35	1.85	0.84	32.21