Research Article
Effects of Commercial Antioxidants on Aging Resistances of Asphalt Binders
Table 5
Spectral analysis of main absorption peaks in modified asphalt.
| | Wavenumber (cm) | Functional groups |
| | 3645−1 | vO-H | | 2925−1 | vC-H aliphatic | | 2852−1 | vC-H aliphatic | | 1750−1 | vC = O | | 1700−1 | vC = O conjugated | | 1600−1 | vC = C aromatic | | 1460−1 | δC-H of -(CH 2)n- (aliphatic index) | | 1377−1 | δC-H of CH3 (aliphatic branched) | | 1083−1 | P–H in-plane vibration in δ phosphite | | 1031−1 | vS = O sulfoxide | | 965−1 | δC-H trans disubstituted –CH=CH- (butadiene block) | | 856−1 | = CH nonplanar variable angle vibration on benzene ring | | 747−1 | δC-H aromatic monosubstituted (styrene block) |
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