固氚用粉煤灰-矿渣基地聚物水泥体系研究  

Study on fly ash slag based polymer cement system for tritium curing

作　　者：王浚 刘才林[1] 姜力诚 袁丽丽 文旭光 WANG Jun;LIU Cailin;JIANG Licheng;YUAN Lili;WEN Xuguang(School of Materials and Chemistry,Southwest University of Science and Technology,Mianyang 621010,China;Guangxi Key Laboratory of International Join for China-ASEAN Comprehensive Transportation,Nanning University,Nanning 530000,China)

机构地区：[1]西南科技大学材料与化学学院,四川绵阳621010 [2]南宁学院广西中国-东盟综合交通国际联合重点实验室,广西南宁530000

出　　处：《新型建筑材料》2024年第9期15-20,共6页New Building Materials

基　　金：广西科技计划项目创新驱动发展专项(桂科AA21077011);南宁市科学研究与技术开发计划项目(20235076)。

摘　　要：针对核工业含氚废水安全处理的难题,构建了一种以碱激发粉煤灰-矿渣为基础的地聚物水泥固化体系。优化设计制备的地聚物水泥固化体具有优异的抗硫酸盐侵蚀、抗冻融性能,且微观结构致密。引入聚丙烯酸极大地增强了纤维与基体间的界面粘结性能,从而有效提高了固化体的抗压和抗折强度。模拟氚水的固化实验研究表明,地聚物水泥固化体的氘渗漏率显著低于传统的普通硅酸盐水泥固化体。地聚物水泥固化体采用聚脲喷涂表面处理后,10%氘水浓度下的喷涂前后氘渗漏率分别为25.11%、0.68%。Aiming at the problem of safe treatment of tritiated wastewater in nuclear industry,a kind of polymer cement curing system based on alkali excited fly ash and slag was established.The cement solidified by optimized design has excellent sulfate resistance,freeze-thaw resistance and dense microstructure.The introduction of polyacrylic acid greatly enhanced the interfacial bond between the fiber and the matrix,thus effectively improving the compressive strength and flexural strength of the cured body.Experimental study of simulated tritium water shaws that,the deuterium leakage rate of the polymer cement solidified body in this paper is significantly lower than that of the conventional silica cement solidified body.In particular,the deuterium leakage rate before and after spraying at 10%deuterium water concentration is 25.11%and 0.68%,respectively.

关 键 词：粉煤灰-矿渣 地聚物水泥固化体 力学性能 耐久性能 氘渗漏率 

分 类 号：TU526[建筑科学—建筑技术科学]