建筑材料加工工艺对氡析出率的影响  

INFLUENCE OF BUILDING MATERIAL PROCESS TECHNOLOGY ON RADON EXHALATION

作　　者：刘福东[1] 冀东[1,2] 王春红[1] 张永贵[3] 潘自强[4] 刘森林[1] 

机构地区：[1]中国原子能科学研究院,北京102413 [2]南华大学核科学技术学院,湖南衡阳421001 [3]中国建筑材料科学研究总院,北京100024 [4]中国核工业集团公司科学技术委员会,北京100822

出　　处：《辐射防护》2009年第6期408-412,共5页Radiation Protection

基　　金：国家自然科学基金资助项目(项目编号:10775187)

摘　　要：为探讨不同加工工艺对掺渣建筑材料的氡析出率的影响,通过改变建筑材料的组成成分、焙烧温度、建筑材料表面和建筑材料内部压力差、粒径等因素在实验室内加工制作建筑材料。实验结果表明:改变建筑材料原材料的配比,对建筑材料的氡析出率影响最为明显;改变焙烧温度次之;改变压制成型时建筑材料内部压强和外部压强差对氡析出率影响不明显。对于生产页岩砖的企业,煤矸石含量在40%～50%,原材料的球磨粒径小于2mm,焙烧温度在960℃或者在1020℃附近,负压在85kPa时,氡的析出率最低。The building materials were produced through changing raw material ingredient, baking temperature, pressure difference between surface and interior of building material, grain diameter etc. Experiment indicates that change of raw material ingredient ratio can obviously influence the radon exhalation from building material, followed by baking temperature; and pressure difference does not have significant influence on radon exhalation. For the factory to produce shale-brick, the radon exhalation is relatively low under the condition that coal gangne accounts for 40%-50%, the grain diameter is less than 2 mm, the baking temperature is about 960℃ or 1 020℃ and the pressure difference is 85 kPa.

关 键 词：氡 析出率 建筑材料 加工工艺 焙烧温度 

分 类 号：X591[环境科学与工程—环境工程]