Thermal and chemical properties of saturated marine clays in a near field environment
Thermal and geochemical investigations were made on water saturated marine clays for the purpose of determining whether such sediments would have properties favorable for the disposal of high level waste. Thermal conductivity and diffusivity were found to remain relatively constant between 25 and 300/sup 0/C. The chemistry of seawater-sediment mixtures, however, undergoes marked changes with heating. A distinctly acidic condition may be generated above 200/sup 0/C and many trace elements are solubilized. Mineralogic changes are dominated by the formation of a magnesium-rich smectite clay. These changes are, however, of sufficiently localized extent that a considerable barrier to radionuclide migration would remain between an emplaced waste canister and the ocean floor.
- Research Organization:
- Sandia Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- EY-76-C-04-0789
- OSTI ID:
- 5869525
- Report Number(s):
- SAND-79-1475C; CONF-790938-1; TRN: 79-019805
- Resource Relation:
- Conference: Workshop on the use of argillaceous materials for the isolation of radioactive wastes, Paris, France, 10 Sep 1979
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CLAYS
PHASE TRANSFORMATIONS
THERMAL CONDUCTIVITY
RADIOACTIVE WASTE DISPOSAL
MARINE DISPOSAL
SEA BED
HEATING
MINERALOGY
SATURATION
SEAWATER
SEDIMENTS
THERMAL DIFFUSIVITY
HYDROGEN COMPOUNDS
MANAGEMENT
MINERALS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
WASTE DISPOSAL
WASTE MANAGEMENT
WATER
052002* - Nuclear Fuels- Waste Disposal & Storage