@article{97988275aeb04a02842e0ef465d0728b,
title = "Linear and nonlinear viscoelastic parameters of asphalt binders modified with softening agents",
abstract = "Asphalt binder modification using various chemically processed synthetic or bio-based additives can be used to reduce cracking potential in asphalt concrete (AC), especially with recycled materials. These modifiers affect rheological properties of asphalt binders. State-of-the-practice parameters obtained within the linear viscoelastic range (LVER) have not successfully predicted their performance. Using a large-strain amplitude and/or novel small-strain parameters at extended aging conditions (double and triple pressure aging vessel cycles) could help. In this study, parameters for unmodified and modified asphalt binders were studied at various aging conditions. The discussed data supports that: (1) Extended aging allows binder distinction beyond performance grading (2) Intermediate-temperature small-strain rheological parameters of binders may be predicted using low-temperature small-strain parameters, and vice versa. (3) Stiffness-dependent parameters must be interpreted based on temperature and frequency of testing. (4) Δ|G*|peak τ is not correalted to small-strain parameters.",
keywords = "Asphalt binder, aging, cracking, modifier, small and large strain",
author = "{Garc{\'i}a Mainieri}, {Javier J.} and Punit Singhvi and Hasan Ozer and Sharma, {Brajendra Kumar} and Al-Qadi, {Imad L.}",
note = "This work was supported by Illinois Department of Transportation. This publication is based on results from the Illinois Department of Transportation-sponsored project, {\textquoteleft}ICT-R27-196-HS: Rheology-Chemical Based Procedure to Evaluate Additives/Modifiers used in Asphalt Binders for Performance Enhancements (Phase 2){\textquoteright}. ICT-R27-196-HS, which was conducted in cooperation with the Illinois Center for Transportation (ICT); Illinois Sustainability Technology Center (ISTC); the Illinois Department of Transportation (IDOT); and the US Department of Transportation, Federal Highway Administration. Special thanks, for their support, to binder and modifier suppliers, ICT students, in particular to Egemen Okte, who developed the manual shifting framework described, and research engineers: Greg Renshaw and Uthman Mohammed Ali. The contributions of the technical review panel are acknowledged; special thanks to K. Morse, J. Trepanier, R. Price, C. Snyder, and B. Hill. The contents of this paper reflect the view of the authors, who are responsible for the facts and the accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of ICT, ISTC, or IDOT. This paper does not constitute a standard, specification, or regulation.",
year = "2023",
doi = "10.1080/14680629.2022.2131603",
language = "English (US)",
volume = "24",
pages = "2225--2244",
journal = "Road Materials and Pavement Design",
issn = "1468-0629",
publisher = "Taylor and Francis Ltd.",
number = "9",
}