Recommendations of RILEM TC 252-CMB: relationship between laboratory short-term aging and performance of asphalt binder
- 57 Downloads
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.
KeywordsAging 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.
- 1.D’Angelo J, Harm E, Bartoszek J, Baumgardner GL, Corrigan M, Cowsert J, Harman T, Jam-shidi M, Jones W, Newcomb D, Prowell B, Sines R, Yeaton B (2008) Warm-mix asphalt: European practice. FHWA-PL-08-007. US Federal Highway Administration, AlexandriaGoogle Scholar
- 3.EN 12607-1 (2014) Bitumen and bituminous binders. Determination of the resistance to hardening under influence of heat and air. RTFOT methodGoogle Scholar
- 4.EN 14769 (2012) Bitumen and bituminous binders—accelerated long-term ageing conditioning by a Pressure Ageing Vessel (PAV), BrusselsGoogle Scholar
- 5.EN 1426 (2007) Bitumen and bituminous binders—determination of needle penetration. European Committee for StandardizationGoogle Scholar
- 6.EN 1427 (2015) Bitumen and bituminous binders. Determination of the softening point. Ring and Ball methodGoogle Scholar
- 7.EN 14770 (2012) Bitumen and bituminous binders—determination of complex shear modulus and phase angle—Dynamic Shear Rheometer (DSR)Google Scholar
- 8.Marsac P, Piérard N, Porot L, Van den Bergh W, Grenfell J, Mouillet V, Pouget S, Besamusca J, Farcas F, Gabet T, Hugener M (2014) Potential and limits of FTIR methods for reclaimed asphalt characterisation. Mater Struct 47(8):1273–1286. https://doi.org/10.1617/s11527-014-0248-0 CrossRefGoogle Scholar
- 10.Hofko B, Cannone Falchetto A, Grenfell J, Huber L, Lu X, Porot L, Poulikakos LD, You Z (2017) Effect of short-term ageing temperature on bitumen properties. RMPD 18(sup2):108–117Google Scholar
- 11.EN12697-3 (2013) Bituminous mixtures. Test methods for hot mix asphalt. Part 3: Bitumen recovery: Rotary evaporatorGoogle Scholar
- 18.Porot L, Eduard P (2016) Addressing asphalt binder aging through the Viscous to Elastic Transition ISAP symposium 2016 JacksonholeGoogle Scholar