Development and Evaluation of Solvent-Based Cold Patching Asphalt Mixture Based on Multiscale

Table 1

The main performance indexes of 90^# base asphalt.

Indexes	Experimental data	Specification requirements
Penetration (25°C, 5s, 100 g)	88.3	80～100
Penetration index PI	0.47	−1.5～+1.0
Softening point (ring and ball method)/°C	52.4	≥44
Ductility (15°C, 5 cm/min)	>150	≥100
Dynamic viscosity of 60°C (Pa·s)	≥140	149
Solubility (%)	≥99.5	99.5
Residue after heating test in RTFO
Mass loss (%)	0.002	±0.8
Penetration ratio 25°C (%)	62	≥57
Ductility 10°C (cm)	22	≥8
Adhesion grade to coarse aggregate	5	≮4