Colloids in the mortar backfill of a cementitious repository for radioactive waste
Description
Colloids are present in groundwater aquifers and water-permeable engineered barrier systems and may facilitate the migration of radionuclides. A careful evaluation of colloid concentrations is required to assess the potential effect of colloids on nuclide migration and, consequently, on the safety of a repository for radioactive waste. A highly permeable mortar is foreseen to be used as backfill for the engineered barrier of the Swiss repository for low- and intermediate-level waste (L/ILW). The backfill is considered to be a chemical environment with a potential for colloid generation and, due to its high porosity, for colloid mobility. In this contribution a novel in-house built particle counting device is described, and measurements of colloid concentrations in the pore water of backfill mortar are presented. (author)
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Additional details
Publishing Information
- Imprint Title
- Paul Scherrer Institute Scientific Report 1998. Volume IV: Nuclear Energy and Safety
- Imprint Pagination
- 130 p.
- Journal Page Range
- p. 93-100
- ISSN
- 1423-7334
- Report number
- INIS-CH--011
INIS
- Country of Publication
- Switzerland
- Country of Input or Organization
- Switzerland
- INIS RN
- 30035882
- Subject category
- S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES;
- Resource subtype / Literary indicator
- Numerical Data, Progress Report
- Descriptors DEI
- AQUIFERS; COLLOIDS; EXPERIMENTAL DATA; MORTARS; PROGRESS REPORT; RADIOACTIVE WASTE DISPOSAL; SWITZERLAND
- Descriptors DEC
- DATA; DEVELOPED COUNTRIES; DISPERSIONS; DOCUMENT TYPES; EUROPE; INFORMATION; MANAGEMENT; NUMERICAL DATA; WASTE DISPOSAL; WASTE MANAGEMENT; WESTERN EUROPE
Optional Information
- Notes
- 6 figs., 3 tabs., 22 refs.