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Asphalt index based on characteristic spectral analysis of infrared spectrum |
| 1. Architectural Engineering Institute, Hebei University, Baoding, Hebei 071002, China; 2. Traffic and Logistics Engineering Institute, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China; 3. Pharmaceutical Chemistry and Molecular Diagnostic of Key Laboratory of Ministry of Education, Hebei University, Baoding, Hebei 071002, China |
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Abstract It is hot research to evaluate the quality of heavy oil asphalt by infrared spectroscopy. By Fourier transform infrared spectroscopy (FTIR) and separation analysis, the 90# A grade asphalt and the SBS modified asphalt were investigated. The results show that the correlation between infrared spectrum analysis technology and conventional asphalt detection method is 99.6%. The 90#A asphalt has 9 obvious feature peaks from 3 000 cm-1 to 650 cm-1, and the SBS modified asphalt has 11 obvious feature peaks from 2 950 cm-1 to 650 cm-1 with corresponding characteristic group for each characteristic peak. The asphalt materials have the same characteristic group with the same technical indicators. By comparing and analyzing the characteristic peaks of asphalt infrared spectroscopy, the asphalt quality can be quickly judged, and the experimental time of testing and evaluating the index of asphalt material can be shortened.
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2019, Vol. 40 
