掺工业废渣新型墙体材料氡析出率的测量

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。

Measurement of Radon Exhalation Rate in Some Industries Residue Used in New Type Wall Materials

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·h^-1、fly ash block (5.83±1.85) Bq·m^-2·h^-1、gangue block (4.70±2.45) Bq·m^-2·h^-1、clay block (2.63±0.56) Bq·m^-2·h^-1.Conclusion The average radon exhalation rate level of autoclaved aerated concrete block and fly ash block is significantly higher than that 1of 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.