添加剂对模拟含氟放射性废液水泥固化性能的影响  

Influences of Additives on Performances of Cementation of Simulated Radioactive Fluoride Liquid Wastes

作　　者：钱正华[1] 刘学阳[1] 乔延波[1] 孙亚平[1] 马洪军[1] 王帅[1] 陈堃[1] 夏晓彬[1] 

机构地区：[1]中国科学院上海应用物理研究所,上海201800

出　　处：《核化学与放射化学》2016年第5期308-312,共5页Journal of Nuclear and Radiochemistry

基　　金：中国科学院战略性先导科技专项(XDA02050000)

摘　　要：采用沸石、蛭石、硅灰、石英砂作为添加剂对模拟含氟放射性废液(主要含有Cs+、Sr2+、F-等)水泥固化性能的影响进行了研究。通过添加不同的添加剂,测定水泥浆的初终凝时间、流动度和温升;测定固化体养护28d后的抗压强度及浸泡、冻融试验后的抗压强度,并进行了抗冲击试验和模拟核素浸出试验。通过对比,得到了满足模拟含氟放射性废液水泥固化的配方,该配方制成的水泥固化试块性能达到了GB 14569.1—2011的要求。The influences of additives with zeolite, vermiculite, silica fume and quartz sand on the performances of the cementation of simulated radioactive fluoride liquid wastes contai- ning Cs＋, Sr2＋, F-, etc. were studied. Different additives were added into the cement formulation, then the setting time, fluidity and temperature-rising of the cement slurry were investigated. And the 28 d compressive strength of the cemented waste form and strength losses after water/freezing resistance tests was investigated. The shock resistance and leaching tests were also carried out. Through series of comparison, the study obtains the cement formulation which can satisfy cementation of simulated radioactive fluoride liquid wastes. The performances of the cemented waste form can meet the demands of GB 14569.1--2011.

关 键 词：添加剂 水泥固化 性能测试 

分 类 号：TL941[核科学技术—辐射防护及环境保护]