Development of an Eastern Shale Oil Residue as an Asphalt Additive - Subtask 2.5: Topical report, February 1, 1994-February 1, 1995

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An evaluation of eastern shale oil as an asphalt additive to reduce oxidative age hardening and moisture susceptibility is being conducted. An eastern shale oil residue having a viscosity of 1.30 Pa`s at 60{degrees}C (140{degrees}F) was blended with three different petroleum-derived asphalts that are known to be very susceptible to oxidative aging. In addition, blends of the eastern shale oil residue and the petroleum-derived asphalts are being coated onto three different aggregates that are known to be susceptible to water stripping. The oxidative age hardening portion of this study is not complete at this time. To date, information has been ... continued below

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23 p.

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Creator: Unknown. December 31, 1997.

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An evaluation of eastern shale oil as an asphalt additive to reduce oxidative age hardening and moisture susceptibility is being conducted. An eastern shale oil residue having a viscosity of 1.30 Pa`s at 60{degrees}C (140{degrees}F) was blended with three different petroleum-derived asphalts that are known to be very susceptible to oxidative aging. In addition, blends of the eastern shale oil residue and the petroleum-derived asphalts are being coated onto three different aggregates that are known to be susceptible to water stripping. The oxidative age hardening portion of this study is not complete at this time. To date, information has been obtained on the unaged samples and two of the aged petroleum-derived asphalts (AAD-1 and AAK-1). When complete, this data will include rheological data on the unaged, RTFO-aged, and the RTFO/PAV-aged samples and infrared data on the unaged and RTFO/PAV-aged samples. With respect to the rheological data, asphalt AAD-1 meets the specifications of a PG 58 asphalt while asphalt AAK-1 does not. In the latter case this indicates that AAK-1 is more appropriately evaluated at a higher temperature range. The infrared spectroscopic data obtained for the eastern shale oil residue show that it contains appreciable amounts of carbonyl and sulfoxide compound types, 0.22 absorbance units and 0. 27 moles/L, respectively. Thus, upon the addition of this residue to the three petroleum-derived asphalts the blends contain increased amounts of these functional groups relative to the petroleum-derived asphalts. This has been observed with other additives and is not considered detrimental. In addition, the data that has been collected to date indicate that the moisture susceptibility of blends of eastern shale oil residue and asphalt AAK-1 are somewhat improved when coated onto Lithonia granite.

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23 p.

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OSTI as DE97005418

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  • Other Information: DN: Topical rept. 1 Feb 94-1 Feb 95.

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  • Other: DE97005418
  • Report No.: DOE/MC/30126--5694
  • Grant Number: FC21-93MC30126
  • DOI: 10.2172/620644 | External Link
  • Office of Scientific & Technical Information Report Number: 620644
  • Archival Resource Key: ark:/67531/metadc696793

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  • December 31, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • Feb. 20, 2017, 7:45 p.m.

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Development of an Eastern Shale Oil Residue as an Asphalt Additive - Subtask 2.5: Topical report, February 1, 1994-February 1, 1995, report, December 31, 1997; Laramie, Wyoming. (digital.library.unt.edu/ark:/67531/metadc696793/: accessed December 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.