Use of asphalt emulsion sealants in disposal of uranium mill tailings

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Studies of asphalt emulsion sealants conducted by the Pacific Northwest Laboratory have demonstrated that the sealants are effective in containing radon within uranium tailings. The laboratory and field studies have further demonstrated that radon exhalation from uranium tailings piles can be reduced by greater than 99% to near background levels. Field tests at the tailings pile in Grand Junction, Colorado confirmed that an 8-cm admix seal containing 22 wt % asphalt could be effectively applied with a cold-mix paver. Other techniques were successfully tested, including a soil stabilizer and a hot, rubberized asphalt seal that was applied with a distributor ... continued below

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Pages: 10

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Hartley, J.N.; Freeman, H.D. & Elmore, M.R. July 1, 1981.

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Description

Studies of asphalt emulsion sealants conducted by the Pacific Northwest Laboratory have demonstrated that the sealants are effective in containing radon within uranium tailings. The laboratory and field studies have further demonstrated that radon exhalation from uranium tailings piles can be reduced by greater than 99% to near background levels. Field tests at the tailings pile in Grand Junction, Colorado confirmed that an 8-cm admix seal containing 22 wt % asphalt could be effectively applied with a cold-mix paver. Other techniques were successfully tested, including a soil stabilizer and a hot, rubberized asphalt seal that was applied with a distributor truck. After the seals were applied and compacted, overburden was applied over the seal to protect the seal from ultraviolet degradation.

Physical Description

Pages: 10

Notes

NTIS, PC A02/MF A01.

Source

  • 1981 national conference on environmental engineering, Atlanta, GA, USA, 8 Jul 1981

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  • Other: DE81028019
  • Report No.: PNL-SA-9520
  • Report No.: CONF-810730-2
  • Grant Number: AC06-76RL01830
  • Office of Scientific & Technical Information Report Number: 6209588
  • Archival Resource Key: ark:/67531/metadc1108415

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • July 1, 1981

Added to The UNT Digital Library

  • Feb. 22, 2018, 7:45 p.m.

Description Last Updated

  • March 26, 2018, 1:45 p.m.

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Hartley, J.N.; Freeman, H.D. & Elmore, M.R. Use of asphalt emulsion sealants in disposal of uranium mill tailings, article, July 1, 1981; United States. (digital.library.unt.edu/ark:/67531/metadc1108415/: accessed April 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.