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Open AccessArticle

Investigation of Ageing in Bitumen Using Fluorescence Spectrum

1
School of Materials Science and Engineering, Shenyang Jianzhu University, Shenyang 110168, China
2
School of Materials Science and Engineering, Northeast University, Shenyang 110918, China
*
Authors to whom correspondence should be addressed.
Materials 2018, 11(8), 1325; https://doi.org/10.3390/ma11081325
Received: 16 June 2018 / Revised: 23 July 2018 / Accepted: 25 July 2018 / Published: 31 July 2018
(This article belongs to the Special Issue Environment-Friendly Construction Materials)
Bitumen ageing is a very complex process and poses a threat to the performance of pavements. In the present work, a fluorescence spectrophotometer was employed to research the change rule of components and the structure of bitumen after the ageing process. The Thin Film Oven Test (TFOT) and Ultraviolet (UV) light treatment were carried out as ageing methods. The properties and components of bitumen were tested before and after aging. The 2D and 3D fluorescence spectra of bitumen were analyzed. The vector of fluorescence peak was calculated for evaluating the ageing process. The results indicated that the ideal concentration of bitumen- tetrachloromethane solution was 0.1 g/L or smaller for avoiding the fluorescence quenching. The coordinates of fluorescent peak appeared “blue-shift” after ageing due to the change of aromatics. In addition, bitumen has already occurred serious ageing when the magnitude of a vector is more than 36. View Full-Text
Keywords: fluorescence spectrum; bitumen; ageing; parametrization; “blue-shift” fluorescence spectrum; bitumen; ageing; parametrization; “blue-shift”
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MDPI and ACS Style

Tang, N.; Yang, Y.-L.; Yu, M.-L.; Wang, W.-L.; Cao, S.-Y.; Wang, Q.; Pan, W.-H. Investigation of Ageing in Bitumen Using Fluorescence Spectrum. Materials 2018, 11, 1325.

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