摘要
近 10 a 来,用于高放废物工程屏障的高压实膨胀黏土的性状受到了广泛关注。据此通过吸力控制试验获取了一些高压实膨润土的试验数据,并从微观结构特性角度进行了解释。水分滞留和迁移特性,以及吸力变化下的膨胀反应都与微观机理相关,同时对吸附阳离子的作用也进行了评价。
Important attention has been devoted over recent ten years to the behaviour of highly compacted swelling clays that are considered as a possible component of engineered barriers for high activity nuclear waste isolation. Some experimental results obtained by running suction controlled experiments on compacted bentonites are interpreted in light of microstructure features. Water retention properties as well as transfer properties and swelling responses under suction changes are related to microscopic mechanisms. Some comments on the role of adsorbed cations are also made.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2006年第4期721-732,共12页
Chinese Journal of Rock Mechanics and Engineering
关键词
工程屏障
膨胀性
黏士
微观结构
核废物
吸力
engineered barriers
swelling
clays, microstructure
nuclear waste
suction
