Application of solvlent change techniques to blended cements used to immobilize low-level radioactive liquid waste Metadata

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Title

  • Main Title Application of solvlent change techniques to blended cements used to immobilize low-level radioactive liquid waste

Creator

  • Author: Kruger, A.A.
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization
    Contributor Info: USDOE, Washington, DC (United States)

Publisher

  • Name: Westinghouse Hanford Company
    Place of Publication: Richland, Washington
    Additional Info: Westinghouse Hanford Co., Richland, WA (United States)

Date

  • Creation: 1996-07-01

Language

  • English

Description

  • Content Description: The microstructures of hardened portland and blended cement pastes, including those being considered for use in immobilizing hazardous wastes, have a complex pore structure that changes with time. In solvent exchange, the pore structure is examined by immersing a saturated sample in a large volume of solvent that is miscible with the pore fluid. This paper reports the results of solvent replacement measurements on several blended cements mixed at a solution:solids ratio of 1.0 with alkaline solutions from the simulation of the off- gas treatment system in a vitrification facility treating low-level radioactive liquid wastes. The results show that these samples have a lower permeability than ordinary portland cement samples mixed at a water:solids ratio of 0.70, despite having a higher volume of porosity. The microstructure is changed by these alkaline solutions, and these changes have important consequences with regard to durability.
  • Physical Description: 8 p.

Subject

  • Keyword: Low-Level Radioactive Wastes
  • Keyword: Leaching
  • Keyword: Cements
  • Keyword: Waste Forms
  • STI Subject Categories: 36 Materials Science
  • STI Subject Categories: 05 Nuclear Fuels
  • Keyword: Porosity
  • Keyword: Solvents
  • Keyword: Microstructure
  • Keyword: Hazardous Materials
  • Keyword: Stability
  • Keyword: Radioactive Waste Management
  • Keyword: Radionuclide Migration

Source

  • Conference: 2. international conference on improvements geosystems, Tokyo (Japan), 1 Jun 1996

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Other: DE96009887
  • Report No.: WHC-SA--2908-FP
  • Report No.: CONF-9606155--1
  • Grant Number: AC06-87RL10930
  • Office of Scientific & Technical Information Report Number: 240510
  • Archival Resource Key: ark:/67531/metadc672803

Note

  • Display Note: INIS; OSTI as DE96009887