Advertisement

Comparison of Short Term Laboratory Ageing on Virgin and Recovered Binder from HMA/WMA Mixtures

  • Gilda FerrottiEmail author
  • Hassan Baaj
  • Jeroen Besamusca
  • Maurizio Bocci
  • Augusto Cannone Falchetto
  • James Grenfell
  • Bernhard Hofko
  • Laurent Porot
  • Lily D. Poulikakos
  • Zhanping You
Conference paper
Part of the RILEM Bookseries book series (RILEM, volume 20)

Abstract

Oxidative ageing strongly affects asphalt mixture behavior. The Rolling Thin Film Oven Test (RTFOT) is currently used to simulate within a laboratory environment the binder short-term ageing, assuming that the mixture is produced at conventional Hot Mix Asphalt (HMA) temperatures (ca 160 °C). However, the introduction of Warm Mix Asphalts (WMAs), which are produced at lower temperatures than HMAs, could require adjustments in the short-term ageing simulation procedure as ageing is strongly influenced by the mixing and compaction temperatures. In this study, the physical properties of a straight-run bitumen, before ageing and after RTFOT ageing at two temperatures (123 °C and 163 °C), are compared to those of the same bitumen recovered from a HMA and a foamed WMA, both produced in laboratory. This comparison aims at determining the best RTFOT temperature for short-term ageing simulation for WMAs. To this end, all the binders were investigated through conventional (penetration value at 25 °C and softening point temperature) and rheological (frequency sweeps with dynamic shear rheometer) tests. Both conventional and rheological tests indicate that the WMA recovered binder is less aged than the binder aged at the standard conditioning temperature of 163 °C, whereas the HMA recovered binder is more aged than the artificially aged binder in the laboratory with RTFOT at 163 °C. These initial results support the idea that an appropriate ageing temperature for RTFOT short-term ageing simulation of WMA needs to be identified.

Keywords

WMA RTFOT Ageing Foamed asphalt 

References

  1. Besamusca, J., Volkers, A., Water, J., Gaarkeuken, B.: Simulating ageing of EN 12591 70/100 bitumen at laboratory conditioning compared to porous asphalt, 5th Eurasphalt & Eurobitume Congress, Istanbul (2012)Google Scholar
  2. Bonaquist, R.: Mix Design Practices for Warm Mix Asphalt. NCHRP report 691. Transportation Research Board, Washington DC (2011)Google Scholar
  3. D’Angelo, J., Harm, E., Bartoszek, J., Baumgardner, G.L., Corrigan, M., Cowsert, J., Harman, T., Jamshidi, M., Jones, W., Newcomb, D., Prowell, B., Sines, R., Yeaton, B.: Warm-Mix Asphalt: European Practice. FHWA-PL-08-007. US Federal Highway Administration, Alexandria (VA) (2008)Google Scholar
  4. Godenzoni, C., Graziani, A., Perraton, D.: Complex modulus characterisation of cold recycled mixtures with foamed bitumen and different contents of reclaimed asphalt, Road Mater. Pavement Des. (2016). http://dx.doi.org/10.1080/14680629.2016.1142467
  5. Guo, M., Bhasin, A., Tan, Y.: Effect of mineral fillers adsorption on rheological and chemical properties of asphalt binder. Constr. Build. Mater. 141, 152–159 (2017)CrossRefGoogle Scholar
  6. Hofko, B., Hospodka, M.: Rolling thin film oven test and pressure ageing vessel conditioning parameters effect on viscoelastic behavior and binder performance grade. Transp. Res. Rec. 2574, 111–116 (2016).  https://doi.org/10.3141/2574-12CrossRefGoogle Scholar
  7. Hofko, B., Alavi, M.Z., Grothe, H., Jones, D., Harvey, J.: Repeatability and sensitivity of FTIR ATR spectral analysis methods for bituminous binders. Mater. Struct. 50, 187 (2017a).  https://doi.org/10.1617/s11527-017-1059-x
  8. Hofko, B., Dimitrov, M., Schwab, O., Weiss, F., Rechberger, H., Grothe, H.: Technological and environmental performance of temperature-reduced mastic asphalt mixtures. Road Mater. Pavement 18(1), 22–37 (2017b).  https://doi.org/10.1080/14680629.2016.1141703
  9. EN 12607-1: Bitumen and bituminous binders. Determination of the resistance to hardening under influence of heat and air. RTFOT method (2014)Google Scholar
  10. EN12697-3: Bituminous mixtures. Test methods for hot mix asphalt. Part 3: Bitumen recovery: Rotary evaporator (2013)Google Scholar
  11. EN 1426: Bitumen and bituminous binders. Determination of needle penetration (2015)Google Scholar
  12. EN 1427: Bitumen and bituminous binders. Determination of the softening point. Ring and Ball method (2015)Google Scholar
  13. Porot, L., Eduard, P.: Addressing asphalt binder aging through the viscous to elastic transition. In: ISAP Symposium, Jackson Hole, Wyoming (USA) (2016)Google Scholar
  14. Prowell, B.: Warm mix asphalt. The international technology scanning program summary report Federal Highway Administration (2007)Google Scholar
  15. Rubio, M.C., Martinez, G., Baena, L., Moreno, F.: Wam mix asphalt: an overview. J. Clean. Prod. 24, 76–84 (2012).  https://doi.org/10.1016/j.jclepro.2011.11.053CrossRefGoogle Scholar
  16. Verhasselt, F.A.: Kinetic approach to the ageing of bitumens. In: Yen and Chilingarian (ed.) Asphaltenes and Asphalts, 1st edn., vol. 2, pp. 475–497. Elsevier (2000). Chap.17Google Scholar

Copyright information

© RILEM 2019

Authors and Affiliations

  • Gilda Ferrotti
    • 1
    Email author
  • Hassan Baaj
    • 2
  • Jeroen Besamusca
    • 3
  • Maurizio Bocci
    • 1
  • Augusto Cannone Falchetto
    • 4
  • James Grenfell
    • 5
  • Bernhard Hofko
    • 6
  • Laurent Porot
    • 7
  • Lily D. Poulikakos
    • 8
  • Zhanping You
    • 9
  1. 1.Università Politecnica delle MarcheAnconaItaly
  2. 2.University of WaterlooWaterlooCanada
  3. 3.Kuwait Petroleum Research and TechnologyRotterdamThe Netherlands
  4. 4.Technische Universität BraunschweigBraunschweigGermany
  5. 5.Australian Road Research BoardPort MelbourneAustralia
  6. 6.Technische Universität WienViennaAustria
  7. 7.Kraton Chemical B.V.AlmereThe Netherlands
  8. 8.EmpaDübendorfSwitzerland
  9. 9.Michigan Technological UniversityHoughtonUSA

Personalised recommendations