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Technical indicators of 70# base asphalt
| Test index | Results | Requirements | Test procedure |
|---|---|---|---|
| Softening point (°C) | 50.8 | >46 | T0606 |
| Penetration (0.1 mm) | 61.1 | 60∼80 | T0604 |
| 10°C Ductility (cm) | >100 | >20 | T0605 |
| 60°C Dynamic viscosity (Pa·s) | 218 | 218 | T0620 |
Change amplitude of free volume fraction in the model after adding modifier
| Modifier | UV absorber | LDHs | ULDHs |
|---|---|---|---|
| Change amplitude of free volume fraction (%) | −3.55 | −1.69 | −2.81 |
Indoor and outdoor aging time correspondence table
| Solar radiation time (month) | 0 | 3 | 6 | 9 | 12 |
|---|---|---|---|---|---|
| UV radiation time (h) | 0 | 46 | 92 | 138 | 184 |
Solubility parameters of composite modifiers with different ratios
| Model | ULDHs (3:7) | ULDHs (1:1) | ULDHs (3:2) |
|---|---|---|---|
| Solubility parameter (J·cm−3)1/2 | 143.58 | 117.57 | 105.2 |
Solubility parameters of different types of modifiers and matrix asphalt
| Model | Base asphalt | UV absorber | LDHs |
|---|---|---|---|
| Solubility parameter (J·cm−3)(1/2) | 17.55 | 14.64 | 199.54 |