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in-situ Electrochemical Characterization of Grouted Radioactive Waste

Published online by Cambridge University Press:  01 January 1992

Albert A. Kruger
Westinghouse Hanford Company, MSIN R4–03, Richland, Washington 99352
Jingyan Gu
Department of Physics, Brooklyn College, Brooklyn, New York 11210
Micha Tomkiewicz
Department of Physics, Brooklyn College, Brooklyn, New York 11210
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This work is based upon the notion that a grid of electrodes will be incorporated in the slurry of radioactive waste and grout-forming solids. These electrodes will remain in the hardened grout, and will serve to monitor the ionic concentration of the liquids contained within the matrix, the structural integrity of the matrix, and the rates of out-diffusion of the electrolytes. Ultimately, we will investigate four techniques: (1) ionic conductivity, (2) electrochemical potential, (3) cyclic voltammetry, and (4) impedance measurements. Eventually, the results will be correlated with present quality verification methods, which include recovering samples and following the Toxicity Characteristic Leach Procedure (or other such accepted standard tests). This paper presents the preliminary results of a recently initiated effort.

Research Article
Copyright © Materials Research Society 1993

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