含水率和添加剂对膨润土导热性能影响的研究  

Study on Heat Conductivity of Gaomiaozi Bentonite

作　　者：朱国平[1] 刘晓东[1] 罗太安[1] 

机构地区：[1]东华理工学院化学生物与材料科学学院,江西抚州344000

出　　处：《东华理工学院学报》2007年第1期60-63,共4页Journal of East China Institute of Technology

摘　　要：膨润土的热学性能是评价膨润土作为高放废物深地质处置库缓冲/回填材料的重要参数。高庙子膨润土矿床初步确定为我国缓冲/回填材料的供应基地,本研究以石英砂作为添加剂,通过实验获得了高庙子膨润土在不同含水率和不同砂含量时所对应的导热系数。结果表明,在相同压实条件下,导热系数随着含水率、石英砂含量的增加而增加。The heat conductivity of bentonite is one of the important parameters for buffer/backfilling materials of engineered barriers in high level radioactive waste disposal system. Based on the laboratory tests of this study, the results indicate that the heat conductivity of bentonite correspond to the charge of water content in bentonite. The heat conductivity of bentonite will increased with the raising of water content in bentonite under the same compact density. The results also show that the heat conductivity of bentonite will be increased with the mixture of sand as the additives in bentonite under the same compact density.

关 键 词：导热系数 添加剂 含水率 膨润土 缓冲/回填材料 

分 类 号：P342[天文地球—水文科学]