| 梅爱华,盘文坚.广州某行政区混凝土用原材料放射性水平评价[J].水泥工程,2014,27(1):88-90 |
| 广州某行政区混凝土用原材料放射性水平评价 |
| Evaluation of radioactivity level of concrete raw materials in an administrative district of Guangzhou |
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| DOI： |
| 中文关键词: 建材 放射性 核素 照射剂量 |
| 英文关键词: building materials radioactivity nuclide irradiation dose |
| 基金项目: |
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| 中文摘要: |
| 通过对广州市某行政区混凝土用原材料放射性水平检测与评价，发现该行政区目前所使用的砂、水泥、石及粉煤灰中，碎石的超标率达60%，而粉煤灰的超标率也在31%,水泥和砂的放射性均低于全国水平。混凝土用建筑材料给人体造成的外照射年有效剂量为692～922 μSv/a。内照射有效年剂量为210～293 μSv/a。其中碎石造成外照射有效年剂量最高，而粉煤灰造成内照射有效年剂量最高。 |
| 英文摘要: |
| The radioactivity levels of concrete raw materials in an administrative district of Guangzhou are tested and evaluated. It's found that the radioactivity level of rubble exceeds the national standard by 60%, and for fly ash,it is 30%; however the radioactivity level of cement and sand are lower than that of national average level. The annual effective external irradiation dose to human body caused by concrete locates in the range of 692～922 μSv, while the internal irradiation dose is 210～293 μSv. And rubbble has the highest contribution in external irradiation dose, and fly ash in internal irradiation. |
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