摘要
目的测量掺工业废渣新型墙体材料氡析出率。方法利用活性炭累积吸附、γ能谱分析测定的方法对墙体材料进行氡析出率测量。结果氡析出率水平从高到低依次为蒸压加气混凝土砌块为(9.70±2.54)Bq.m-2.h-1、粉煤灰砖为(5.83±1.85)Bq.m-2.h-1、煤矸石砖为(4.70±2.45)Bq.m-2.h-1、粘土砖为(2.63±0.56)Bq.m-2.h-1。结论砌块和粉煤灰砖的氡析出率平均水平明显高于粘土砖,砌块与粘土砖的氡析出率水平差异具有显著性(P<0.01),粉煤灰砖与粘土砖的氡析出率水平差异具有统计学意义(P<0.05),煤矸石砖与粘土砖的氡析出率水平差异无统计学意义(P>0.05)。煤矸石砖属于比较理想的低氡析出新型墙材。
Objective To study the radon exhalation rate in some industries residue used in new type wall materials. Methods To determine the radon exhalation rate by the activated charcoal absorption and γ- ray spectrometer with HPGe detector. Results The radon exhalation rate level is successively autoclaved aerated concrete block （ 9.70 ± 2.54） Bq·m^-2·s^-1 ,fly ash block （5.83±1.85）Bq·m^-2·s^-1 ,gangue block （4.70±2.45）Bq·m^-2·s^-1 ,clay block（2.63±0. 56）Bq·m^-2·s^-1. Conclusion The average radon exhalation rate level of autoclaved aerated concrete block and fly ash block is significantly higher than that lof clay block , the differences is significant （P 〈0.01 ）, but there had no significant difference on gangue block and clay block （ P 〉 0.05 ）. The gangue block is a ideal New Type Wall Material, whose radon exhalation is lower than that of autoclaved aerated concrete block and fly ash block.
出处
《中国辐射卫生》
北大核心
2007年第4期390-391,共2页
Chinese Journal of Radiological Health
基金
山东省自然科学基金项目(Y2006C90)
关键词
新型墙体材料
氡析出率
活性炭
Γ谱仪
New Type Wall Materials
Radon Exhalation Rate
Activated Charcoal
γ- ray Spectrometer Using HPGe Detector
