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| Radionuclide Contents Determination and Radiation Level Analysis of Cement |
| CHEN Tao1, JIA Ming-yang2, CHEN Yi-xue1 |
1. School of Nuclear Science and Engineering, North China Electric Power University, Beijing 102206 China;
2. Department of Power Engineering, Chongqing Electric Power College, Chongqing 400053 China |
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Abstract Objective To determine the radionuclide contents in cements, analyse their radiation levels, and provide advisement for safety use of cement. Methods We studied the specific activities of 226Ra, 232Th and 40K in 9 cement samples by NaI γ ray spectroscopy. The radiation level of these cement samples were also analysed using the irradiation index and indoor effective dose. Results The results indicate that radiation order of different cement is white Portland cement < composite Portland cement < ordinary Portland cement < slag Portland cement. Conclusion All cement samples are safe according to the national radiation safety standard. However, improper use of cement still can cause potential radiation safety risk, which needs our special attention.
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Received: 16 May 2013
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