Research Article
Synergetic Effect of Nano-ZnO and Trinidad Lake Asphalt for Antiaging Properties of SBS-Modified Asphalt
Table 5
Asphalt functional group results.
| Absorption wavenumber (cm−1) | Corresponding functional group | SBS asphalt | TLA | 3% Z + 25% T + SBS asphalt |
| 3458 | O-H stretching vibration | ✕ | ✓ | ✕ | 2922 | -CH2-asymmetric stretching vibration | ✓ | ✓ | ✓ | 2852 | -CH2-symmetric stretching vibration | ✓ | ✓ | ✓ | 2725 | -CHO stretching vibration | ✓ | ✓ | ✓ | 1743 | Carbonyl C=O stretching vibration | ✓ | ✓ | ✓ | 1455 | -CH2-bending vibration | ✓ | ✓ | ✓ | 1376 | -CH3-umbrella vibration | ✓ | ✓ | ✓ | 1030 | Sulfoxide-based S=O stretching vibration | ✓ | ✓ | ✓ | 1030 | Si-O-Si stretching vibration | ✕ | ✓ | ✓ | 967 | Butadiene C=C stretching vibration | ✓ | ✕ | ✓ | 700 | Benzene ring-CH-bending vibration | ✓ | ✕ | ✓ | 440 | Si-O-Si stretching vibration | ✕ | ✓ | ✓ |
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