CAJ | 학술논문

放射性废物的固化是目前有害废物的研究热点。而水泥固化是常用于中低放射性废物的固化技术,但水泥固化技术仍存在一定的问题,如水灰比高、废物包容量小、对所固化的废物pH要求较高、固化时可能产生粉尘、PO43-,BO33-,Zn,Sn等可能影响固化体凝结时间和强度发展,造成材料的后期强度不够,材料性能劣化。因此,有必要在水泥体系上进行更多的选择,从而提高水泥固化体的性能,磷酸镁水泥则是其中可用于替代的新型水泥品种,文章对磷酸镁水泥用于放射性废物固化的研究现状进行了调研,并对今后的研究做了展望。
방사성폐물적고화시목전유해폐물적연구열점。이수니고화시상용우중저방사성폐물적고화기술,단수니고화기술잉존재일정적문제,여수회비고、폐물포용량소、대소고화적폐물pH요구교고、고화시가능산생분진、PO43-,BO33-,Zn,Sn등가능영향고화체응결시간화강도발전,조성재료적후기강도불구,재료성능열화。인차,유필요재수니체계상진행경다적선택,종이제고수니고화체적성능,린산미수니칙시기중가용우체대적신형수니품충,문장대린산미수니용우방사성폐물고화적연구현상진행료조연,병대금후적연구주료전망。
Cement solidification process has significant advantage when applied in the disposal of medium and low level radioactive wastes.Cement solidification process has been widely applied in storage and transportation of medium and low level radioactive wastes.Traditional cement solidification technology has many disadvantages,such as high water to cement ratio,high nuclei leaching rate,low solidified form strength and etc.Traditional cement must cure under high pH value environment,wastes need treatment previously.The setting time and strength of cement may affected by PO43-,BO33-,Zn,Sn.Therefore,the selection of new type cement for medium and low level radioactive wastes is necessary.Considering the characteristics of magnesium phosphate cement（MPC）,magnesium phosphate cement was selected as matrix material in this study for solidifying medium and low level radioactive waste,and solification of medium and low level radioactive incineration ash was also studied.