Print Email Facebook Twitter Chemo-mechanics of ageing on bituminous materials Title Chemo-mechanics of ageing on bituminous materials Author Jing, R. (TU Delft Pavement Engineering) Varveri, Aikaterini (TU Delft Pavement Engineering) Liu, X. (TU Delft Pavement Engineering) Scarpas, Athanasios (TU Delft Pavement Engineering) Erkens, S. (TU Delft Pavement Engineering) Date 2018 Abstract Ageing of bitumen is a complex process. It is accompanied by major chemical and mechanical changes. In this study, Fourier Transform Infrared (FTIR) spectrometer and Dynamic Shear Rheometer (DSR) tests were utilized to investigate the effect of ageing on the chemical and mechanical properties of bituminous materials. Bitumen films with thickness of 2 mm were exposed to laboratory ageing at various conditions. Specifically, different combinations of ageing time, temperature and pressure were applied on the materials. The FTIR tests results were used to quantify the changes in the chemical functional groups and to calculate ageing indices (carbonyl index and sulfoxide index) of bitumen. In addition, the DSR tests results were analysed to determine the evolution of the rheological properties of bitumen. A linear relationship was made between the ageing indices and complex shear modulus, providing thus a chemo-mechanics framework to describe bitumen ageing. The results were validated by using data of field aged samples. Finally, the influence of ageing on the parameters of two viscoelastic models was determined. Subject bitumenchemomechanicsageingviscoelastic model To reference this document use: http://resolver.tudelft.nl/uuid:f29a6244-510f-446c-9b55-07143f45158b Embargo date 2019-02-01 Source Transportation Research Board 97th Annual Meeting: Washington DC, United States, 2018-1-7 to 2018-1-11 Event TRB 2018: 97th Annual Meeting of the Transportation Research Board, 2018-01-07 → 2018-01-11, Walter E. Washington Convention Center, Washington D.C., United States Part of collection Institutional Repository Document type conference paper Rights © 2018 R. Jing, Aikaterini Varveri, X. Liu, Athanasios Scarpas, S. Erkens Files PDF 2018_1trb18_0038.pdf 1.59 MB Close viewer /islandora/object/uuid:f29a6244-510f-446c-9b55-07143f45158b/datastream/OBJ/view