ソレアイト質玄武岩による模擬高レベル核廃棄物の固定化

概要

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The powder mixtures of tholeiite-type basalt containing 5, 10 and 20 wt% of simulated high-level nuclear wastes were sintered at 1000, 1050, and 1100℃ for 5, 10, 30, 50 and 100 h. Compressive strength, thermal expansion coefficient, chemical durability, apparent density, porosity, leaching test into alkali and acid solution were examined. The maximum compressive strength of the sample sintered at 1100℃ for 100 h was slightly greater than that of commercial quartz glass-rod. Judging from the results of various tests, the optimum condition of sintering for a good waste disposal material is as follows: amount of simulated waste; 10 wt%, firing temperature; 1100℃, sintering duration; 100 h.
社団法人日本セラミックス協会の論文
1993-04-01