Numerical prediction of 222Rn exhalation from cement-based materials under accelerated carbonation

被引：0

作者：

Yang, Rong ^{[1
]}

Lan, Ming ^{[1
]}

Feng, Shengyang ^{[1
]}

Zhong, Yongming ^{[1
]}

机构：

[1] Univ South China, Sch Resource Environm & Safety Engn, Hengyang 421001, Peoples R China

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2024年

关键词：

Cement-base materials; Carbonization model; Radon migration; Radon exhalation rate; RADON EXHALATION; NATURAL RADIOACTIVITY; BUILDING-MATERIALS; LUNG-CANCER; CONCRETE; EQUILIBRIUM; TRANSPORT; EXPOSURE; RISK;

D O I：

10.1007/s10967-024-09773-3

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A model combined with carbonization and radon migration is proposed to simulate radon exhaled from concrete under standard accelerated carbonization. Considering the diffusion and reaction consumption of CO2 as well as the diffusion and decay of radon in porous media, the surface radon exhalation rate of the test block is obtained, and the radon diffusion coefficient was modified. The functional relationship between the correction factor and the carbonation depth and carbonation age period under standard accelerated carbonation conditions was established. The revised simulated value was in good agreement with the experimental value.

引用

页码：6391 / 6402

页数：12

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