期刊
JOURNAL OF ADVANCED CONCRETE TECHNOLOGY
卷 19, 期 5, 页码 426-432出版社
JAPAN CONCRETE INST
DOI: 10.3151/jact.19.426
关键词
-
资金
- Agency for Natural Resources and Energy (ANRE) of the Ministry of Economy, Trade, and Industry (METI), Japan
The diffusion coefficient of blended cement materials increases with leaching, approaching that of ordinary Portland cement after considerable leaching. The diffusion coefficient post-leaching shows a good correlation with pore volume, particularly for pore diameters of 50 nm or larger.
Cement-based materials used at radioactive waste disposal sites are required to possess long-term stability. However, when these materials come in contact with groundwater, calcium leaching from the solid occurs, and the material becomes porous. The use of mineral admixtures is recommended to minimize porosity. However, few studies have focused on the diffusion performance of cement-based materials blended with mineral admixtures after leaching. Therefore, in this study, the diffusion performance of such materials using blended cement after leaching was evaluated. It was found that the diffusion coefficient of the blended cement increased with leaching, and when leaching progressed considerably, the diffusion coefficient of the blended cement was close to that of ordinary Portland cement. Furthermore, the diffusion coefficient after leaching demonstrated good correlation with the pore volume when the pore diameter was 50 nm or larger.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据