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Rejuvenated Binders, Reclaimed Binders and Paving Bitumens, Are They Any Different?

  • Tomas KoudelkaEmail author
  • Pavel Coufalik
  • Michal Varaus
  • Iva Coufalikova
Conference paper
Part of the RILEM Bookseries book series (RILEM, volume 20)

Abstract

Asphalt binder hardens over time; therefore, its chemical and rheological properties are altered considerably in the course of the time. The change of properties starts during the production process and continues throughout pavement’s lifetime. Further, the process of rejuvenation is supposed to restore lost properties of aged binders. Additionally, a hypothesis that rejuvenated binders behave similarly to paving bitumens have been suggested by researchers and rejuvenator producers many times. However, there is still a limited number of studies comparing behaviour of paving bitumens, rejuvenated and reclaimed binders altogether. This study investigates the influence of long term laboratory ageing on empirical properties of paving bitumens and rejuvenated binders. In total, behaviour of 10 paving bitumens available on the Middle European market was compared with the behaviour of the laboratory aged paving bitumen combined with 10 different rejuvenators. Binders were aged by RTFOT (Rolling Thin Film Oven Test) and further by up to two cycles of PAV (Pressurized Ageing Vessel). The properties of the aged binders were thereupon compared with 10 characteristics of reclaimed binders. The results indicate that RTFOT+PAV procedure ages the binder less in comparison to what is observed in the field in some cases. Aged rejuvenated binders exhibit higher penetrations and penetration indexes compared to aged paving bitumens and to reclaimed binders. Additionally, it was found out that the properties of rejuvenated binders upon ageing are similar to air rectified bitumens rather than to reclaimed binders. Aging of rejuvenated binders thus follows a different mechanisms compared to paving bitumens.

Keywords

Rejuvenated binders Reclaimed binders Paving bitumens Ageing 

Notes

Acknowledgements

This paper was prepared with the support of the Czech Technology Agency, project TJ01000248 “Rejuvenating agents for the extension of pavement lifetime with the use of a higher amount of Reclaimed Asphalt Pavement materials”.

References

  1. Ali, H., Mohammadafzali, M.: Long-Term Aging of Recycled Binders, Final report: BDV29 Two 977-01. Florida Department of Transportation (2015). DIALOG. http://www.fdot.gov/research/Completed_Proj/Summary_SMO/FDOT-BDV29-977-01-rpt.pdf. Accessed 22 Mar 2018
  2. Golalipour, A.: Investigation of the effect of oil modification on critical characteristics of asphalt binders. Dissertation, University of Wisconsin Madison, June 2013Google Scholar
  3. Lesuer, D.: The colloidal structure of bitumen: consequences on the rheology and on the mechanisms of bitumen modification. Adv. Colloid Interface Sci. 145(1–2), 42–82 (2008).  https://doi.org/10.1016/j.cis.2008.08.011CrossRefGoogle Scholar
  4. Hesp, A.M.S., Shurvell, H.F.: X-ray fluorescence detection of waste engine oil residue in asphalt and its effect on cracking in service. Int. J. Pavement Eng. 11(6), 541–553 (2010).  https://doi.org/10.1080/10298436.2010.488729CrossRefGoogle Scholar
  5. Koudelka, T., Porot, L., Coufalik, P., Varaus, M.: The use of rejuvenators as an effective way to restore aged binder properties. In: TRA 2018, Article 10783 (2018)Google Scholar
  6. Nayak, P., Sahoo, U.C.: Rheological, chemical and thermal investigations on an aged binder rejuvenated with two non-edible oils. Road Mater. Pavement Des. 18(3), 612–629 (2016).  https://doi.org/10.1080/14680629.2016.1182058CrossRefGoogle Scholar
  7. Ongel, A., Hugener, M.: Impact of rejuvenators on aging properties of bitumen. Constr. Build. Mater. 94(2015), 467–474 (2015).  https://doi.org/10.1016/j.conbuildmat.2015.07.030CrossRefGoogle Scholar
  8. Van der Poel, C.: A general system describing the visco-elastic properties of bitumens and its relation to routine test data. J. Appl. Chem. 4(1954), 221–236 (1954)Google Scholar
  9. Zaumanis, M., Mallick, R.: Review of very high-content reclaimed asphalt use in plant-produced pavements: state of the art. Int. J. Pavement Eng. 16(1) (2014).  https://doi.org/10.1080/10298436.2014.893331

Copyright information

© RILEM 2019

Authors and Affiliations

  • Tomas Koudelka
    • 1
    Email author
  • Pavel Coufalik
    • 1
  • Michal Varaus
    • 1
  • Iva Coufalikova
    • 1
  1. 1.Brno University of TechnologyBrnoCzech Republic

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