Research output per year
Research output per year
Lili Ma*, Aikaterini Varveri, Ruxin Jing, Sandra Erkens
Research output: Contribution to journal › Article › Scientific › peer-review
The chemical characterization of bitumen type and ageing state are fundamental in determining structural and mechanical properties of bitumen. This work aims to classify various bitumen types at different ageing states and to identify the primary chemical differences relevant to the classification. Fourier transform infrared (FTIR) spectral data of eight bitumen types at five ageing states were analyzed using a chemometric procedure that incorporates principal component analysis (PCA), linear discriminant analysis (LDA) models, variable selection methods. The models presented results of high accuracy in differentiating bitumen type and ageing state. The results show that the spectral regions that describe the aliphatic and aromatic bonds are critical to the identification of bitumen types. The chemical changes due to bitumen ageing are mainly revealed at the region of 1800–900 cm-1. This chemometric method is instructive for the characterization of chemical bitumen properties.
Original language | English |
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Pages (from-to) | 506-520 |
Number of pages | 15 |
Journal | Road Materials and Pavement Design |
Volume | 24 |
Issue number | S1 |
DOIs | |
Publication status | Published - 2023 |
Research output: Thesis › Dissertation (TU Delft)