Supercritical refining of asphalt to produce asphalt recycling agents
- Texas A&M Univ., College Station, TX (United States)
Several asphalts were fractionated using supercritical pentane. These fractions were analyzed and Gel Permeation Chromatography and High Performance Liquid Chromatography and their viscosities were measured. The properties of these fractions vary not only among the fractions of a given asphalt, but also for the same fraction produced from different asphalts. These widely varied fractions previously have been shown to have potential for reblending to produce superior asphalts. This study investigates the potential for using some of the fractions as asphalt recycling agents. A modified SHRP PAV test was conducted on nine recycled asphalts. The aging indices of eight of the recycled asphalts are superior to the aging index of the original asphalt. In addition, two of the blends using industrial supercritical fractions and the three blends using laboratory supercritical fractions have lower aging indices than blends using commercial recycling agents.
- OSTI ID:
- 215064
- Report Number(s):
- CONF-950801-; TRN: 96:000922-0572
- Resource Relation:
- Conference: 210. national meeting of the American Chemical Society (ACS), Chicago, IL (United States), 20-25 Aug 1995; Other Information: PBD: 1995; Related Information: Is Part Of 210th ACS national meeting. Part 1 and 2; PB: 1866 p.
- Country of Publication:
- United States
- Language:
- English
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