In contrast, the low temperature grade of the binder PG 76-22 and the high temperature grade of the RAP binder were restored with the use of the tested rejuvenator product.
This study presents a new formulation that quantifies the uncertainties in bitumen behavior to obtain the true temperature grade of the bitumen with different confidence levels (75%and95%5%).
For the asphalt binders and HMA evaluated, the MSCR showed a better correlation with the two rutting related performance tests (HWTT and RLPD) than the DSR high temperature grade.
As theoretically expected, the corresponding results indicated that addition of RAP and RAS significantly improved the Dynamic Shear Rheometer (DSR) high temperature grade of all the extracted asphalt binders, with most of the HMA mixtures exhibiting relatively low Jnr values in the multiple stress creep recovery (MSCR) test.
GCS denotes Glasgow Coma Scale, DPB diastolic blood pressure, HR hear rate, T bodily temperature (grade Celsius), CSF cerebrospinal fluid.
Several relevant co-factors were included, but on the other hand only median climatic values for larger geographic areas were used, possibly leading to an underestimated effect of local precipitation or temperature (Grade 3).
To obtain the SICS, a subscore (grade) was first assigned to the body temperature (graded from 0 to 4), fatigue (from 0 to 3), and the serum levels of CRP, TNF-α, IL-6, IL-8 (each graded from 0 to 4, Table 2-wrap>).
In order to characterize the properties of the asphalt binder related to HMA rutting, the Superpave performance grade system uses the high-temperature grade, which is determined based on the complex shear modulus (|G∗|) and phase angle parameter (G∗/sinδ) that is measured from the Dynamic Shear Rheometer (DSR) test.
For each temperature, nuclear grade Pile Grade A graphite specimens were subject to a fluence of ca. 1022 electrons cm−2, and transmission electron micrographs and selected area diffraction patterns were collected during electron beam exposure.
