深圳常用墙体材料辐射水平调研.pdfVIP

学兔兔 全国中文核心期刊 杆 建蟓 深圳常用墙体材料辐射水平调研 孙浩，林洛莹 (深圳市建筑科学研究院股份有限公司，广东 深圳 518049) 摘要：对深圳市常用墙体材料中天然放射性物质的含量及其分布特点进行了调研。从深圳在建的130个民用建筑中选取了12 种墙体材料，用低本底多道 能谱仪测量其天然放射性核素含量。结果表明：12种常用墙体材料的460个样品的内照射指数没有超 过GB 6566--2010规定的限值，外照射指数超过GB 6566--2010规定限值的有石子、蒸压灰砂砖、混凝土普通砖、粉煤灰、蒸压加气 混凝土砌块，其中石子的外照射指数L超标率最高，蒸压加气混凝土砌块超标率最低。通过对深 lr常用墙体材料辐射水平的分析， 为民用建筑建造过程中材料的抽检及选择建筑材料提供参考。 关键词：民用建筑；墙体材料：辐射水平 中图分类号：TU52：X591 文献标识码：A 文章编号：1001—702X(2016)03—0070—03 Survey of radiation levels of common wall materials in Shenzhen SUN Hao，LIN Luoying (Shenzhen Institute of Building Research，Shenzhen 518049，China) Abstract：The contents and distribution characteristics of natural radionuclides in common wall materials of Shenzhen civil buildings were investigated．Twelve kinds of wall materials were selected from 130 civil buildings in Shenzhen，which were used in the construction．The radioactivity was determined with low background multi-channel~,-ray spectrometer．The results showed that the internal exposure index of 12 kinds of wall materials of 460 samples did not exceed the limits specified in the national stall-- dard GB 6566--2010．The materials which its externa1 exposure index exceeded the limits specified in the national standard GB 6566--2010 were stone，autoclaved lime sand brick，concrete common brick，fly ash and autoclaved aerated concrete block．The ex- cessive rate of external exposure index of stone was the highest，and the excessive rate of external exposure index o