Effects of Diatomite and SBS on Freeze-Thaw Resistance of Crumb Rubber Modified Asphalt Mixture

Table 1

Properties of neat asphalt.

Property	Value	Technical criterion (%)
Penetration (25°C, 0.1 mm)	84	80~100
Penetration index PI		−1.5~+1.0
Softening point TR&B (°C)	44	≥42
Ductility (15°C, cm)	150	≥100
Specific gravity (15°C, g/cm^3)	1.05	—
After TFOT
Mass loss (%)		≤±0.8
Penetration ratio (25°C, %)	64	≥57
Age ductility (10°C, cm)	14	≥8