Evaluation of an eastern shale oil residue as an asphalt additive
An evaluation of eastern shale oil (ESO) residue as an asphalt additive to reduce oxidative age hardening and moisture susceptibility was conducted by Western Research Institute (WRI). The ESO residue, have a viscosity of 23.9 Pa{lg_bullet}s at 60{degree}C (140{degree}F), was blended with three different petroleum-derived asphalts, ASD-1, AAK-1, and AAM-1, which are known to be very susceptible to oxidative aging. Rheological and infrared analyses of the unaged and aged asphalts and the blends were then conducted to evaluate oxidative age hardening. In addition, the petroleum-derived asphalts and the blends were coated onto three different aggregates, Lithonia granite (RA), a low-absorption limestone (RD), and a siliceous Gulf Coast gravel (RL), and compacted into briquettes. Successive freeze-thaw cycling was then conducted to evaluate the moisture susceptibility of the prepared briquettes. The rheological analyses of the unaged petroleum-derived asphalts and their respective blends indicate that the samples satisfy the rutting requirement. However, the aging indexes for the rolling thin film oven (RTFO)-aged and RTFO/pressure aging vessel (PAV)-aged samples indicate that the blends are stiffer than the petroleum-derived asphalts. This means that when in service the blends will be more prone to pavement embrittlement and fatigue cracking than the petroleum-derived asphalts. Infrared analyses were also conducted on the three petroleum-derived asphalts and the blends before and after RTFO/PAV aging. In general, upon RTFO/PAV aging, the amounts of carbonyls and sulfoxides in the samples increase, indicating that the addition of the ESO residue does not mitigate the chemical aging (oxidation) of the petroleum-derived asphalts. This information correlates with the rheological data and the aging indexes that were calculated for the petroleum-derived asphalts and the blends.
- Research Organization:
- Western Research Inst., Laramie, WY (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FC21-93MC30126
- OSTI ID:
- 211285
- Report Number(s):
- DOE/MC/30126--5128; ON: DE96000648
- Country of Publication:
- United States
- Language:
- English
Similar Records
Evaluation of an eastern shale oil residue as an asphalt additive
Development of an Eastern Shale Oil Residue as an Asphalt Additive - Subtask 2.5: Topical report, February 1, 1994-February 1, 1995
Weather aging effects on modified asphalt with rubber-polyethylene composites
Technical Report
·
Mon Dec 18 23:00:00 EST 1995
·
OSTI ID:574259
Development of an Eastern Shale Oil Residue as an Asphalt Additive - Subtask 2.5: Topical report, February 1, 1994-February 1, 1995
Technical Report
·
Tue Dec 30 23:00:00 EST 1997
·
OSTI ID:620644
Weather aging effects on modified asphalt with rubber-polyethylene composites
Journal Article
·
Wed Dec 28 19:00:00 EST 2022
· Science of The Total Environment
·
OSTI ID:2997250