Effect of Superpave Short-Term Aging on Binder and Asphalt Mixture Rheology

  • Khaled Z. Ramadan Department of Civil Engineering, Faculty of Engineering, University of Petra, Jordan
  • Aboqdais A. Saad Department of Civil Engineering, Faculty of Engineering, Jordan University of Science and Technology, Jordan

Abstract

This study aimed to evaluate the effect of Superpave short term aging period length and type of additive used in modifying the asphalt binder on the creep behavior of asphalt binder and asphalt mix. Hot-mix asphalt (HMA) specimens were prepared at optimum asphalt content using unmodified asphalt, or asphalt with 4% by weight of SBS or PE. The Universal Testing Machine was used to conduct dynamic creep tests. Tests results indicated that the effect of extending the aging period on creep deformation is highly dependent on type of additive used in preparing the asphalt mix. Extending the aging period more than three hours caused insignificant effect of creep behavior of control asphalt mixes. On the other hand, extending the aging period more than one hour caused insignificant effect of creep behavior of asphalt mixes prepared using SBS additive. While for mixes prepared using PE, the creep deformation continues to decrease as aging period increase.

Keywords

asphalt, mix, rheology, creep, additives, aging
Published
21-08-2017
How to Cite
RAMADAN, Khaled Z.; SAAD, Aboqdais A.. Effect of Superpave Short-Term Aging on Binder and Asphalt Mixture Rheology. Periodica Polytechnica Transportation Engineering, [S.l.], v. 45, n. 4, p. 196-205, aug. 2017. ISSN 1587-3811. Available at: <https://pp.bme.hu/tr/article/view/10477>. Date accessed: 23 sep. 2017. doi: https://doi.org/10.3311/PPtr.10477.
Section
Articles