关于复合土样本热导和水迁移的实验研究
Gaosheng Yang1,2, Bing Bai2, Wenxuan Chen1
1College of Urban and Rural Construction, Shanxi Agricultural University, Jinzhong 030801, China.
Materials (Basel, Switzerland)
|September 14, 2024
概括
这项研究表明,用于高水平放射性废物存储的复合本托尼特缓冲材料中的关节可以愈合. 愈合的关节满足工程屏障系统的热和液压导电性要求.
科学领域:
- 地质技术工程 地质技术工程
- 材料科学 材料科学 材料科学
- 核废物管理 核废物管理
背景情况:
- 复合土石块中的接头是高水平放射性废物 (HLW) 储存库工程屏障系统中的关键弱点.
- 了解仓库条件下的联合行为对于确保长期安全至关重要.
研究的目的:
- 在不和复合顿石样本中研究关节的愈合过程和性质.
- 为了评估HLW存储应用的固化接头的热和液压导电性.
主要方法:
- 开发一个实验室实验装置,用于不和复合本托尼特样品.
- 测量温度和体积含水量随时间的变化.
- 模拟水流入,并分析治愈后的热和液压导电性.
主要成果:
- 温度变化主要受到温度边界的影响,水含量的影响最小.
- 水力边界条件在短期内显著增加了边界附近的水含量.
- 补水膨胀导致应力调整,均质化和复合本顿石内关节的愈合.
结论:
- 由水化胀和应力再分配驱动的复合本托尼特关节的愈合过程,导致整体样本均化.
- 经过加固的接头显示出适合HLW存储库的工程屏障系统的热和液压导电值.
- 开发的实验设置有效地模拟和监测库相关条件下的不和顿石的行为.
相关概念视频
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This example deals with managing the workability of concrete for a raft foundation project under hot weather conditions. Workability is crucial for ensuring the concrete is easy to place, compact, and finish. In this scenario, a slump test — a common method to measure the workability of fresh concrete — initially indicated low workability. This was attributed to the rapid water loss from the concrete mix, exacerbated by the high temperatures causing the course aggregates to heat up.
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01:18Porosity in Cement Paste
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01:20Porosity and Absorption of Aggregate
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