Study on Ultraviolet Aging Performance of Composite Modified Asphalt Based on Rheological Properties and Molecular Dynamics Simulation

Table 1

Changes of four components of asphalt before and after aging

Asphalt component (%)	Matrix asphalt		Compound modified asphalt
	0	12	0	12
Asphaltenes	9.56	24.33	12.58	22.80
Saturation score	14.38	11.04	13.96	11.19
Aromatics	35.41	23.76	32.53	25.54
Colloid	41.65	39.42	40.88	39.53