Table 6.

Modeling process of the SCB numerical model.

Modeling Step	Modeling Procedure
Step One: built the numerical sample without aggregate, mastic and void	(a) Set test sample size (b) Create uniformly sized balls
Step Two: built the numerical sample without void	(a) Set gradation and asphalt mastic content (b) Randomly create polygon characteristics for coarse aggregates (c) Create ball clusters in the numerical sample prepared in step one according to (b)
Step Three: finalize the numerical sample	(a) Set porosity (b) Randomly create void distribution and size (c) Delete balls in the numerical sample prepared in step two according to (b)
Step Four: Give the contact models to the corresponding contacts in the numerical sample prepared in Step Three