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	✕	✓	✓