Estimation of cesium-137 release from waste/cement composites using data from small-scale specimens

Technical Report · Fri Jul 01 04:00:00 EDT 1983

OSTI ID:5659169

Dayal, R; Arora, H; Morcos, N

A study has been performed, correlating the leachability of Cs-137 from small-scale to large-scale waste/cement composites. In the study, simulants of two contrasting waste types were considered: cation-exchange resin and boric acid wastes incorporated in Portland Type cements. Test specimens were right cylinders of dimensions varying from 5 x 5 to 55 x 55 (diameter x height, cm). Using leach data representing diffusion-controlled release, effective diffusivities of approx. 2 x 10/sup -8/ cm/sup 2//s have been calculated for Cs-137 in both waste/cement matrices. A comparison of the observed and predicted cesium release values indicated that leach data derived from testing of small-scale specimens can be extrapolated, using a planar semi-infinite medium approximation, to estimate leachability of a full-scale specimen.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5659169
• Report Number(s): NUREG/CR-3382; BNL-NUREG-51690; ON: DE84002392
• Country of Publication: United States
• Language: English

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BETA DECAY RADIOISOTOPES
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LEACHING
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MATERIALS
NUCLEI
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ODD-EVEN NUCLEI
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