【摘要】 研究了特种水泥 (ASC)树脂固化体的微观结构。用压汞实验比较了ASC特种水泥的树脂固化体和普通硅酸盐水泥 (OPC)固化体多孔性能 ,通过电镜扫描 (SEM )观察比较了ASC和OPC的微观晶体结构。分析结果发现ASC水泥固化体具有较好的孔形结构 ,这是ASC固化体浸出率低的原因 ;ASC水泥固化体晶体呈针状结构 ,OPC水泥固化体晶体呈片状结构 ,针状结构的力学性能和结构强度要比OPC的片状结构好 ,该结构是ASC固化放射性废树脂包容量大、强度高的根本原因。更多还原

【Abstract】 In this paper, the microstructure of Spent Io n Exchange Resin ASC cement-solidification matrix was studied. Pore characters of cement-solidification matrix of ASC and OPC were compared using Mercury Intr usion Experiments,crystal microstructures of ASC and OPC were studied by Scanni ng Electron Microscope (SEM). The results showed that the pore structures of ASC matrix were better than those of OPC, and this determined the low leaching rate s of ASC. From SEM results the needle crystals of ASC and flat crystals of OPC w ere observed, the needle crystals were the basic reason of high strength and res in loading of ASC solidification matrices.更多还原