放射性废物地质处置回填材料隔湿防腐性能研究  

Hygroscopic and Antisepsis of Backfill Material for HLW Disposal

作　　者：赵维霞[1] 王青海[1] 刘艳[1] 樊晓苓[1] 

机构地区：[1]西北核技术研究所,陕西西安710024

出　　处：《环境科学与技术》2009年第B06期78-82,共5页Environmental Science & Technology

摘　　要：回填材料是高放废物地质处置多重屏障系统中非常重要的一道人工屏障，在参考国内外放射性废物处置回填材料的基础上，选择钠基膨润土、钙基膨润土、粘土、氧化镁和水泥粉5种材料作为拟选回填材料。为了解以上5种回填材料性能，开展了回填材料吸湿性能和与容器材料（16MnR钢）的相容性试验研究，研究结果表明；在恒温恒湿环境中，一定厚度的回填材料具有隔潮性能，其中以氧化镁和水泥粉效果最好。Backfill material layer is one of the important engineering barrier s in the high-level radioactive waste （HLW） geologcal repository. On the base of international backfill material, five kinds of backfill-material are chosen,including Na-bentonite,Ca-bentonite,Clay, Magnesia and Cement. In order to learn five kinds of backfill material its＇ performance, The hygroscopic and compatihicity of those materials have been studied. The results show that some backfill-material can antisepsize with certain thickness in the constant temperature and humidity,and the performance of Magnesia and Cement are especially better.

关 键 词：废物处置 回填材料 腐蚀 吸湿率 相容性概况 

分 类 号：X132[环境科学与工程—环境科学]