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目的初步研究并建立块型建材中氡射气系数的快速测量方法。方法本工作以块型加气混凝土为研究对象,建立氡射气输运理论模型、采用测氡仪和密闭装置测量累积氡浓度、计算氡射气系数,并与标准测量方法进行比对。结果该方法与标准方法的测量结果无显著性差异,表明了较高的可靠性。结论研究建立的快速测量方法可较大缩短测量时间,利于建材氡放射性危害的评价,是其放射性危害防控体系的有益补充。
OBJECTIVE To study and establish a rapid measurement method of radon coefficient in block building materials. Methods In this work, bulk aerated concrete is taken as the research object. The theoretical model of radon gas transport is established. The radon concentration is measured by radon detector and airtight device. The radon coefficient is calculated and compared with the standard measurement method. Results There was no significant difference between this method and the standard method, indicating higher reliability. Conclusion The rapid measurement method established in this study can greatly shorten the measurement time and help evaluate the radioactive hazard of building materials radon, which is a beneficial supplement to its radioactive hazard prevention and control system.