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Ageing Effect on Chemo-Mechanics of Bitumen

  • Ruxin JingEmail author
  • Aikaterini Varveri
  • Xueyan Liu
  • Athanasios Scarpas
  • Sandra Erkens
Conference paper
Part of the RILEM Bookseries book series (RILEM, volume 20)

Abstract

Ageing has a significant impact on the chemical and mechanical behavior of bituminous materials. 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 bitumen. 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 results were used to quantify the changes in the chemical functional groups and to calculate the combined ageing index (summation of carbonyl and sulfoxide indices) of bitumen. In addition, the DSR test results were analyzed to determine the evolution of the crossover frequency and crossover modulus with ageing. A linear relationship was found between the combined ageing index and the distance in the crossover map, providing thus a chemo-mechanics framework to describe bitumen ageing.

Keywords

Bitumen Ageing FTIR spectroscopy Rheology Chemo-mechanics 

Notes

Acknowledgements

The authors gratefully acknowledge the Dutch Ministry of Transport, Public Works and Water Management for funding this project.

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Copyright information

© RILEM 2019

Authors and Affiliations

  • Ruxin Jing
    • 1
    Email author
  • Aikaterini Varveri
    • 1
  • Xueyan Liu
    • 1
  • Athanasios Scarpas
    • 1
  • Sandra Erkens
    • 1
  1. 1.Delft University of TechnologyDelftThe Netherlands

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