我が国におけるコンクリート材料中の放射性核種濃度の測定 The Concentration of Radioactivities in Concrete Materials in Japan

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To determine the concentration of radioactivity in materials constituting concrete in Japan, we carried out measurements of the components of concrete: steel, coarse aggregate, fine aggregate, cement, cement admixture, and water. Because the concentrations of radioactivity of steel, cement admixture, and water are far less than those of the other components, we measured only coarse aggregate, fine aggregate, and cement. The results of the measurements are found to lie in a wide range from 6.8-912.5 (average 516.9) Bq/kg for K-40, 2.93-86.7 (average 38.8) Bq/kg for U-238, and 1.59-61.6 (average 23.9) Bq/kg for Th-232. The results proved that the concentrations of radioactivity of components in concrete in Japan are lower than those in other countries. The radioactivity concentration in concrete according to geographic region showed nearly the same distribution pattern as the intensity of gamma rays from soil.

収録刊行物

  • 保健物理 : hoken buturi  

    保健物理 : hoken buturi 33(2), 143-150, 1998-06 

    Japan Health Physics Society

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各種コード

  • NII論文ID(NAID)
    10002137025
  • NII書誌ID(NCID)
    AN00228458
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03676110
  • NDL 記事登録ID
    4522643
  • NDL 雑誌分類
    ZN36(科学技術--原子力工学・工業) // ZS45(科学技術--医学--放射線医学)
  • NDL 請求記号
    Z16-696
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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