Research on Mesoscopic Response of Asphalt Pavement Structure under Vibration Load

Table 3

Microscopic parameters of linear parallel bond model in the asphalt mixture.

Structural layer location		Particle density (kg·m^−3)	Stiffness ratio between tensile and shear,	Tensile strength, (Pa)	Cohesion, (Pa)	Particle elastic modulus, E (Pa)	Particle radius (mm)
Upper layer	Coarse aggregate	2500	1	4.2e9	2.3e10	6.3e9	0.5–0.75
	Binding material particles	2100	1	4.4e6	5.2e6	5.9e8	0.5–0.75
Lower layer	Coarse aggregate	2500	0.8	6.1e9	1.85e10	6.5e9	0.75–1
	Binding material particles	2100	0.8	5.4e6	6.2e6	7.8e8	0.75–1
Upper base layer		2400	1	8.3e6	9.7e6	4.3e8	0.75–1
Lower base layer		2400	1	6.9e6	8.1e6	4.4e8	0.75–1
Bottom base layer		2200	1	6.4e6	8.43e6	3.2e8	0.75–1
Subgrade		1900	1	1.5e6	5.4e6	6.4e8	0.5–1