Xiao, X., & Xiao, F. (2025). Improved FTIR method for quantifying elemental changes of asphalt. In L. Eberhardsteiner, B. Hofko, & R. Blab (Eds.), Advances in Materials and Pavement Performance Prediction IV : Contributions to the 4th International Conference on Advances in Materials and Pavement Performance Prediction (AM3P 2025), 7-9 May 2025, Vienna, Austria (pp. 254–257). TU Wien, E230-03 Road Engineering. https://doi.org/10.34726/10663
Advances in Materials and Pavement Performance Prediction IV : Contributions to the 4th International Conference on Advances in Materials and Pavement Performance Prediction (AM3P 2025), 7-9 May 2025, Vienna, Austria
In current pavement engineering practice, simply and effectively characterizing elemental changes in asphalt is conducive to optimizing chemo-mechanical performance, diagnosing aging conditions, and guiding rejuvenation. The study proposed an improved Fourier-transform infrared spectroscopy (FTIR) method to improve elemental quantification capability of attenuated total reflectance (ATR) mode by integrating transmission (TR) mode. The results showed that TR- and ATR-FTIR have promising analytical performance in quantifying alkyl content and semi-quantifying functional group content, respectively. The spectral indexes of the improved FTIR method shows promising correlations with the element changes, namely atomic H/C ratio and heteroatom content (S, O, and N), with R2 values of 0.97, 0.45, 0.78, and 0.75, respectively. Moreover, K-nearest neighbor regression (KNR) prediction achieved R2 of 0.99, 0.93, 0.84, and 0.92, respectively. The findings suggested quantitative effect and online testing potential for elemental analysis of asphalt.
en
Research Areas:
Modeling and Simulation: 35% Structure-Property Relationsship: 30% Computational System Design: 35%
CC BY 4.0
