Materials and Structures

, 52:69 | Cite as

Recommendations of RILEM TC 252-CMB: relationship between laboratory short-term aging and performance of asphalt binder

  • Lily D. PoulikakosEmail author
  • Bernhard Hofko
  • Augusto Cannone Falchetto
  • Laurent Porot
  • Gilda Ferrotti
  • James Grenfell
RILEM Technical Committee


This recommendation reports on the effect of the Rolling Thin Film Oven Test (RTFOT) aging temperature on chemo-mechanical properties of asphalt binders for Warm Mix Asphalts. The RTFOT testing temperature should ideally replicate physical and chemical short-term aging of asphalt mixtures. The relevance of this was investigated in light of the increased use of warm mix asphalt technologies. The recommendations are based on round robin experiments performed by nine participating laboratories and consisting of a series of tests including experimental results on penetration, softening point temperature, Fourier Transform Infrared Spectroscopy and Dynamic Shear Rheology. The results indicate that the current RTFOT aging temperature does not replicate the aging in the mixture. For this reason, the TC recommends the selection of appropriate RTFOT aging temperatures in order to simulate binder aging as a result of various mixing technologies. The sulfoxide index is proposed as a measure of oxidative short term RTFOT aging.


Aging WMA RTFOT PAV DSR FTIR Asphalt Bitumen 



The authors would like to acknowledge the contributions of the active members of the RILEM 252-CMB technical committee in terms of experimental results and supplying bitumen samples.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© RILEM 2019

Authors and Affiliations

  • Lily D. Poulikakos
    • 1
    Email author
  • Bernhard Hofko
    • 2
  • Augusto Cannone Falchetto
    • 3
  • Laurent Porot
    • 4
  • Gilda Ferrotti
    • 5
  • James Grenfell
    • 6
  1. 1.Empa, Swiss Federal Laboratories for Materials Science and TechnologyDübendorfSwitzerland
  2. 2.Technische Universität WienViennaAustria
  3. 3.Technische Universität BraunschweigBraunschweigGermany
  4. 4.Kraton chemical B.V.AlmereThe Netherlands
  5. 5.Università Politecnica delle MarcheAnconaItaly
  6. 6.AARBBrisbaneAustralia

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