Investigation on high-temperature performance of waste-based high-viscosity asphalt binders (WHABs) by Repeated Creep Recovery (RCR) test

This study reviewed and compared the test methods for the high-temperature performance of asphalt binder, and selected Repeated Creep Recovery (RCR) test to evaluate the high-temperature performance of three wasted-based high-viscosity asphalt binders (WHABs, including D-I, D-II and F) and a control sample (TAFPACK-SUPER modified asphalt, TMA). Meanwhile, shear stress, test temperature, and aging degree of binders, which could influence high-temperature behavior of binders, were also investigated, and related evaluation indexes including recovery compliance (R), non-recoverable creep compliance (Jnr), and viscous stiffness modulus (Gv) were compared. Results show that WHABs has much better high-temperature performance than TMA; shear stress has the most prominent effect on bindersâ high-temperature performance, then aging degree, and last selected test temperature in Îł-time curves results; R, Jnr, and Gv values results indicate aging degree has a significant effect on binders, and improving bindersâ aging performance can greatly improve the high-temperature performance.The accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author