【摘要】 收集了4类共19个来自不同生产企业的建筑材料样品,对样品的放射性活度浓度和氡析出率进行测量。测量结果表明:若建筑材料的原材料相近,加工工艺相近的企业生产的建筑材料的氡析出率变化不大;若原材料差别较大,加工工艺不同,即使是生产同类建筑材料,成品建筑材料的放射性核素镭活度浓度相近,但氡析出率的差别很大。更多还原

【Abstract】 The 19 samples from different building material factories were collected for four kinds of building materials.The activity concentration and radon exhalation of building materials were measured.The radon exhalations of building materials are not obviously different if the component is same and the processes of building materials are similar.However,the radon exhalations of same kind of building material are greatly different if the components are different and the processes of building material are varied even if the activity concentrations of building material are similar.更多还原