Radiation dose calculation of fine and coarse coal fly ash used for building purposes

被引：16

作者：

Angel Sanjuan, Miguel ^{[1
]}

Suarez-Navarro, Jose A. ^{[2
]}

Argiz, Cristina ^{[3
]}

Estevez, Esteban ^{[4
]}

机构：

[1] Tech Univ Madrid, Civil Engn Sch, Dept Bldg Mat, C Prof Aranguren S-N,Ciudad Univ, Madrid 28040, Spain

[2] CIEMAT Res Ctr Energy Environm & Technol, Dept Environm, Environm Radioact & Radiol Surveillance Unit, Av Complutense 22, Madrid 28040, Spain

[3] Tech Univ Madrid UPM, Civil Engn Sch, Dept Chem Bldg Mat, C Prof Aranguren S-N,Ciudad Univ, Madrid 28040, Spain

[4] Tech Univ Madrid UPM, Dept Cement Chem Testing, LOEMCO, Getafe 28906, Spain

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2021年 / 327卷 / 02期

关键词：

Coal fly ash; Cement; Concrete; Gamma-ray spectrometry; Radiological hazard; Fineness;

D O I：

10.1007/s10967-020-07578-8

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Coal fly ash (CFA) samples used in building construction were assessed for natural radioactivity by gamma-ray spectrometry analysis. Activity concentrations in the original CFA sample were 101, 55.5 and 493 Bq kg(-1) for Ra-226, Th-232 and K-40, respectively. They were compared with the activity concentrations measured in five fineness ranges (from < 45 to > 200 mu m). Then, the finer the CFA is, the higher the activity concentrations. Radioactive hazard was assessed for 765 samples collected for 10 years. The annual effective dose was 0.95 mSv y(-1) for the fly ash and lower than 1 mSv y(-1) for all the scenarios considered for a building material. Therefore, CFA may be used to manufacture building materials safely.

引用

页码：1045 / 1054

页数：10

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