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Bitumen threshold temperatures under different concentrations of fumed silica NPs before and after aging.
| Threshold Temperatures (°C) | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Before Aging (G*/sin δ = 1 kPa) |
After Aging (G*/sin δ = 2.2 kPa) |
||||||||||||||
| S1 | S2 | S3 | S4 | S5 | S6 | S7 | S8 | S9 | S10 | S11 | S12 | S13 | S14 | S15 | S16 |
| 72.8 | 72.3 | 72.7 | 72.8 | 73.0 | 72.8 | 72.9 | 73.1 | 73.9 | 73.1 | 73.8 | 73.2 | 74.8 | 73.4 | 74.3 | 73.8 |
