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Takebe, Shinichi; Shimooka, Kenji; Wadachi, Yoshiki; Kuramoto, Yuzuru.
Japan Atomic Energy Research Inst., Tokyo (Japan)1989
Japan Atomic Energy Research Inst., Tokyo (Japan)1989
AbstractAbstract
[en] Penetration experiment of 137Cs into the impermeable cement mortar which has been treated by the impermeable reagent (XYPEX reagent) was carried out in order to advance the performance of engineered barrier for Low Level Radioactive Waste. The result showed that the radioactive concentration at deeper region in the impermeable cement mortar specimen was decreased about 1 order of magnitude below that in the untreated specimen. Diffusion coefficient calculated from the radioactive concentration of 137Cs in the cement mortar specimen was 9.1 x 10-5 cm2/day for untreated cement mortar specimen and 4.0 x 10-5 cm2/day for the impermeable cement mortar specimen, respectively. Treatment of cement mortar by the impermeable reagent was found to be effective to reduce the value of appearent diffusion coefficient for 137Cs in the cement mortar. (author)
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Dec 1989; 18 p
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Report
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BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, BUILDING MATERIALS, CESIUM ISOTOPES, COATINGS, DEPOSITION, DIMENSIONS, DISPERSIONS, DISSOLUTION, EVALUATION, HOMOGENEOUS MIXTURES, INTERMEDIATE MASS NUCLEI, ISOTOPES, MATERIALS, MIXTURES, NUCLEI, ODD-EVEN NUCLEI, RADIOACTIVE MATERIALS, RADIOACTIVE WASTES, RADIOISOTOPES, SEPARATION PROCESSES, SOLUTIONS, WASTES, YEARS LIVING RADIOISOTOPES
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