Simplified evaluation for swelling characteristics of bentonites
Simplified evaluation for swelling characteristics of bentonites
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DOI：
10.1016/s0013-7952(03)00140-6
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发表时间：
2004-02-01
影响因子：
7.4
通讯作者：
Komine, H
中科院分区：
文献类型：
--
作者：
Komine, H
膨润土目前计划用作高放射性核废料储存库的缓冲和回填材料，因为这些材料必须具有膨胀特性以密封废料。在缓冲材料和回填材料的设计中，必须从世界上多种膨润土中选择合适的膨润土。在选择合适的膨润土时，可以得到各种膨润土膨胀特性的数据库及其评价。为此，对日本和美国生产的四种膨润土的膨胀压力和膨胀变形进行了室内试验。这些镁铝石具有不同的物理化学性质。从膨润土的物理化学性质出发，研究膨润土的膨胀压力和膨胀变形特性。此外，本研究还提出了基于微观分析的各种膨润土膨胀特性的简化评价方法。(C)2003 Elsevier B.V.保留所有权利。
Bentonite is currently planned to be used as buffer and backfill materials for repositories of high-level nuclear waste because these materials must have the swelling characteristics to seal the waste. In the design for buffer and backfill materials, we must choose the adequate bentonite among many kinds of bentonite in the world. The database of the swelling characteristics of various bentonites and its evaluation will be available when we will select the adequate bentonite. For this purpose, this study performed the laboratory tests on the swelling pressure and swelling deformation of four kinds of bentonite produced in Japan and the United States. These bentonites have different physicochemical properties. This study investigated the characteristics of swelling pressure and swelling deformation from the viewpoint of the physicochemical properties of each bentonite. Furthermore, this study also proposed the simplified evaluation of swelling characteristics of various bentonites on the basis of microscopic analysis. (C) 2003 Elsevier B.V. All rights reserved.