Properties of slag concrete for low-level waste containment [electronic resource].
- Published
- Washington, D.C. : United States. Dept. of Energy, 1991.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy. - Physical Description
- Pages: (12 pages) : digital, PDF file
- Additional Creators
- Westinghouse Savannah River Company, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
Access Online
- Restrictions on Access
- Free-to-read Unrestricted online access
- Summary
- Ground granulated blast furnace slag was incorporated in the concrete mix used for construction of low-level radioactive waste disposal vaults. The vaults were constructed as six 100 × 100 × 25 ft cells with each cell sharing internal walls with the two adjacent cells. The vaults were designed to contain a low-level radioactive wasteform called saltstone and to isolate the saltstone from the environment until the landfill is closed. Closure involves backfilling with native soil, installation of clay cap, and run-off control. The design criteria for the slag-substituted concrete included compressive strength, 4000 psi after 28 days; slump, 6 inch; permeability, less than 10{sup −7} cm/sec; and effective nitrate, chromium and technetium diffusivities of 10{sup −8}, 10{sup −12} and 10{sup −12} cm²/sec, respectively. The reducing capacity of the slag resulted in chemically reducing Cr{sup +6} to Cr{sup +3} and Tc{sup +7} to Tc{sup +4} and subsequent precipitation of the respective hydroxides in the alkaline pore solution. Consequently, the concrete vault enhances containment of otherwise mobile waste ions and contributes to the overall protection of the groundwater at the disposal site.
- Report Numbers
- E 1.99:wsrc-ms-91-073
E 1.99: conf-9103238--1
conf-9103238--1
wsrc-ms-91-073 - Subject(s)
- Other Subject(s)
- Concretes
- Mechanical Properties
- Mixtures
- Low-Level Radioactive Wastes
- Radioactive Waste Disposal
- Radioactive Waste Facilities
- Slags
- Waste Product Utilization
- Binders
- Compression Strength
- Cracks
- Diffusion Barriers
- Leaching
- Savannah River Plant
- Building Materials
- Dispersions
- Dissolution
- Management
- Materials
- National Organizations
- Nuclear Facilities
- Radioactive Materials
- Radioactive Waste Management
- Radioactive Wastes
- Separation Processes
- Us Aec
- Us Doe
- Us Erda
- Us Organizations
- Waste Disposal
- Waste Management
- Wastes
- Note
- Published through SciTech Connect.
01/01/1991.
"wsrc-ms-91-073"
" conf-9103238--1"
"DE92013194"
American Concrete Institute (ACI) spring meeting, Boston, MA (United States), 17-21 Mar 1991.
Wong, P.B.; Langton, C.A. - Funding Information
- AC09-89SR18035
View MARC record | catkey: 14418364