天然膨润土矿物防渗材料的性能评价与寿命预测  

Performance Evaluation and Service Life Prediction of Natural Bentonite Mineral Impervious Material

作　　者：刘玉芹 Liu Yuqin(China Non-metal Mining Industry Co.,Ltd.,Beijing100035,China)

机构地区：[1]中国非金属矿工业有限公司,北京100035

出　　处：《中国建筑防水》2021年第8期50-53,共4页China Building Waterproofing

基　　金：国家重点研发计划课题(2017YFB0310902)。

摘　　要：通过自制一种模拟渗透装置,对不同类型膨润土防渗材料在去离子水、模拟海水、垃圾渗透液等使用环境下的应用性能进行评价,并通过观测渗透系数、进行数值模拟,对膨润土防渗材料的使用寿命进行预测。研究表明,预水化型和预水化覆膜型膨润土防渗材料的性能明显优于针刺型膨润土防渗材料,在模拟海水等个别应用场景中需要采用预水化覆膜型膨润土防渗材料。Through a self-made simulated infiltration device,the application performance of different types of bentonite anti-seepage materials under environment of deionized water,simulated seawater and garbage seepage liquid is evaluated,and the service life of bentonite anti-seepage materials is predicted by observing the permeability coefficient and numerical simulation.The research shows that the performance of pre-hydrated and pre-hydrated film coated bentonite impervious materials are obviously better than that of needle punched bentonite impervious materials.Pre-hydrated film coated bentonite impervious materials need to be used in individual application scenarios such as simulated seawater.

关 键 词：膨润土防渗材料 性能评价 寿命预测 模拟渗透装置 

分 类 号：TU57+9[建筑科学—建筑技术科学] TU502