现代技术建造的建筑物中氡气进入的机制和来源。
Mechanisms and sources of radon entry in buildings constructed with modern technologies.
作者信息
Zhukovsky M V, Vasilyev A V
机构信息
Institute of Industrial Ecology UB RAS, Sophy Kovalevskoy st., 20, Ekaterinburg 620990, Russia.
Institute of Industrial Ecology UB RAS, Sophy Kovalevskoy st., 20, Ekaterinburg 620990, Russia
出版信息
Radiat Prot Dosimetry. 2014 Jul;160(1-3):48-52. doi: 10.1093/rpd/ncu111. Epub 2014 Apr 11.
To investigate the influence of modern building construction technologies on the accumulation of radon indoor, 20 rooms in buildings constructed using mostly monolithic concrete or aerated concrete blocks have been studied. Dominance of the diffusion mechanism of radon entry in buildings constructed with modern technologies has been established. As a result of computer simulations it was found that the main contribution to the variability of radon concentration was made by changes in the ventilation rate. At a low ventilation rate (<0.2 h(-1)) radon concentration above 200 Bq m(-3) can be observed for residential buildings. There is a need for the regulation of the radium-specific activity in building materials. According to the estimates of this study, the content of 226Ra in building materials should not exceed the value of 100 Bq kg(-1).
为研究现代建筑施工技术对室内氡气积累的影响，对主要采用整体混凝土或加气混凝土砌块建造的建筑物中的20个房间进行了研究。已确定在采用现代技术建造的建筑物中，氡气进入的扩散机制占主导地位。通过计算机模拟发现，通风率的变化对氡浓度的变化起主要作用。对于住宅建筑，在低通风率（<0.2 h⁻¹）时，可观察到氡浓度高于200 Bq m⁻³。需要对建筑材料中的镭比活度进行监管。根据本研究的估算，建筑材料中²²⁶Ra的含量不应超过100 Bq kg⁻¹。
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