Leaching of radioactive nuclides from cement grouts. Part II

Technical Report · Mon Oct 21 04:00:00 EDT 1974

DOI:https://doi.org/10.2172/7284844· OSTI ID:7284844

Stanley, W T; Avgerinos, G F; Gonzalez, B; Hemley, P J

The determination of the leaching rate of radioactive /sup 137/Cs from a cement grout should the grout be contacted by water is necessary for environmental protection. The effect of the leachant turnover rate on /sup 137/Cs leaching rates was evaluated with batch and continuous (modified Soxhlet extractor) modes of experimentation. Three additives (Grundite, potter's clay, and Conasauga shale) were compared in terms of capability of radioactive isotope retention, while two leachants (tap and distilled water) were investigated. The Soxhlet extractor experiment resulted in the highest rate of leaching, and Conasauga shale was found the best additive for /sup 137/Cs immobilization. Tap water used as leachant was more effective than distilled water. Data were analyzed using models involving isotopic diffusion in the grout and involving diffusion plus a time dependent boundary condition at the interface of grout specimen and leachant.

• Research Organization: Oak Ridge National Lab., Tenn. (USA)
• OSTI ID: 7284844
• Report Number(s): ORNL/MIT-198
• Country of Publication: United States
• Language: English

Related Subjects

052002* -- Nuclear Fuels-- Waste Disposal & Storage
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ADDITIVES
ALKALI METAL ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BUILDING MATERIALS
CEMENTS
CESIUM 137
CESIUM ISOTOPES
DISSOLUTION
HYDROGEN COMPOUNDS
ISOTOPES
LEACHING
MANAGEMENT
MATERIALS
NUCLEI
ODD-EVEN NUCLEI
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE DISPOSAL
RADIOACTIVE WASTE STORAGE
RADIOACTIVE WASTES
RADIOISOTOPES
SAFETY
SEPARATION PROCESSES
SOLIDIFICATION
STORAGE
WASTE DISPOSAL
WASTE MANAGEMENT
WASTE STORAGE
WASTES
WATER
YEARS LIVING RADIOISOTOPES