Research on Rheological Properties by Desulfurized Rubber Powder/SBS Composite-Modified Asphalt and Road Performance of Its Mixture

Table 3

The technical indicators of desulfurized rubber powder.

Items	Value	Requirements
Heating loss (80°C) (%)	0.4	≤1.5
Ash (%)	7.2	≤8
Acetone extract (%)	16.4	≤20
Mooney viscosity ML 100°C (1 + 4)	35	≤45
Carbon black content (%)	28.3	≥18
Rubber hydrocarbon content (%)	48	≥40
Iron content (%)	0.028	≤0.03
Particle size (mm)	5	≤10