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温度对红色粘土释放特性的影响
Chao Gu1, Qiang Sun2, Lei Zhang3
1College of Geology and Environment, Xi'an University of Science and Technology, Xi'an, Shaanxi, 710054, China; School of Coal Engineering, Shanxi Datong University, Datong, Shanxi, 037003, China.
Journal of environmental radioactivity
|November 2, 2024
概括
红色粘土的高温处理会影响气的释放. 孔隙结构,特别是微孔体积和连接性,显著影响建筑材料中的出气率.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 辐射保护 辐射保护
背景情况:
- 红色粘土是常见的建筑材料.
- 红色粘土含有天然存在的气,是一种潜在的健康危害.
- 了解建筑材料的排放对于公共卫生至关重要.
研究的目的:
- 为了研究高温处理对红色粘土毛孔结构的影响.
- 分析毛孔结构修改和释放之间的关系.
- 为了量化经过处理的红色粘土的子排放模式.
主要方法:
- 吸附被用来描述红色粘土的孔隙结构在高温处理后.
- 测量和分析了释放模式.
- 在孔隙结构参数和出气率之间进行了相关性分析.
主要成果:
- 红色粘土中的释率在200°C时达到峰值,达到0.0127 Bq/m2s.
- 孔隙结构显著影响了气的呼出.
- 微孔体积和孔隙连接性与呼气速率 (R2=0.78和R2=0.96,分别) 呈现出强烈的线性相关性.
结论:
- 高温处理改变了红色粘土的孔隙结构,影响了辐射.
- 孔隙特性是从烧焦的粘土材料中释放的关键决定因素.
- 调查结果为评估和减轻红色粘土建筑物中风险提供了必要的数据.
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