建筑材料与装饰材料对室内γ辐射水平的影响

为防护建筑材料和装饰材料的γ辐射对室内环境污染,选择不同建材和不同装饰材料的居室,分别测定室内地板、墙面γ外照射量率和室内γ外照射量率、室内γ辐射吸收剂量率;结果表明在测定的建材γ外照射量率中,红砖和废渣砖所建住宅γ辐射差别无统计学上差异,但两者与青砖比较差异有统计学意义著;装饰材料中花岗岩γ辐射最强,木地板最低.室内γ外照射量率主要来自辐射最强的建材和装饰材料.1997年测定的数据与2005年测量的数据之间差异没有统计学意义,认为建筑时间对不同建材室内γ外照射量率没有影响.

The Effects of Building and Decorating Materials on the Gamma Radioactive Level in Apartments

To prevent the pollution of the gamma radioactive level of different building and decorating materials in apartments,the apartments with different building and decorating materials were selected randomly.The exteral gamma radioactive dose rate on the face of walls and floors and the radioactive level indoors were measured respectively.The results indicated that there was no differece between cinger and red brick in statisitics,but both of them were different from grey brick significantly.Among all decorating materials,the external gamma radioactive dose rate of granite was the largest,but that of wood floor was the least.The external gamma radioactive dose rate indoors mainly comes from the building and decorating materials with the highest radioactive level.There was no statistic differece between 1997 and 2005.We can draw a conclusion that the building time has not affected the external gamma radioactive dose rates.