中・低レベル放射性廃棄物処理用セメント固化体の圧縮強度と動弾性係数の関係

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  • 申 相澈
    九州大学大学院人間環境学府空間システム専攻 : 研究生
  • 金 振晩
    韓国公州大学校建築工学科 : 教授
  • 小山 智幸
    九州大学大学院人間環境学研究院都市・建築学部門

書誌事項

タイトル別名
  • Relationship between Compressive Strength and Dynamic Modulus of Elasticity in the Cement Based Solid Product for Consolidating Disposal of Medium-Low Level Radioactive Waste
  • ナカ ・ テイレベル ホウシャセイ ハイキブツ ショリヨウ セメントコカタイ ノ アッシュク キョウド ト ドウ ダンセイ ケイスウ ノ カンケイ

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抄録

Recently, the medium-low level radioactive waste from nuclear power plant must be transported from temporary storage to the final repository. Medium-low level radioactive waste, which is composed mainly of the liquid ion exchange resin, has been consolidated with cementitious material in the plastic or iron container. Since cementitious material is brittle, it would generate cracks by impact load during transportation, signifying leak age of radioactive ray. In order to design the safety transporting equipment, there is a need to check the compressive strength of the current waste. However, because it is impossible to measure strength by direct method due to leakage of radioactive ray, we will estimate the strength indirectly by the dynamic modulus of elasticity. Therefore，it must be identified the relationship between of strength and dynamic modulus of elasticity. According to the waste acceptance criteria, the compressive strength of cement based solid is defined as more than 3.44MPa(500 psi). Compressive strength of the present solid is likely to be significantly higher than this baseline because of continuous hydration of cement during long period. On this background, we have tried to produce the specimens of the 28 day's compressive strength of 3 to 30 MPa having the same material composition as the solid product for the medium-low level radioactive waste, and analyze the relationship between the strength and the dynamic modulus of elasticity. By controling the addition rates of AE agent, we made the mixture containing the ion exchange resin and showing the target compressive strength(3～30MPa).The dynamic modulus of elasticity of this mixtures is 4.1～10.2 GPa, about 20 GPa lower in the equivalent compressive strength level than that of ordinary concrete, and increasing the discrepancy according to increase strength. The compressive strength and the dynamic modulus of elasticity show the liner relationship

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  • 都市・建築学研究

    都市・建築学研究 24 123-130, 2013-07-15

    九州大学大学院人間環境学研究院都市・建築学部門

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