摘要
用高掺量沸石碱矿渣水泥对模拟中低放废液进行大体积浇注固化,废物包容量(以硝酸盐计)为13 5%,水固比为0 34,水泥浆体具有良好的工作性。在去离子水中,固化体Cs+、Sr2+第42d浸出率(GB7023 86、25℃)为2 5×10-5、1 3×10-6cm·d-1,整个浸出周期累积浸出百分数为0 7%和0 2%;MCC 1P法90℃28dCs+、Sr2+浸出率为3 1×10-4、2 2×10-5g·cm-2·d-1,浸出百分数为3 5%、0 2%;150℃时为5 6×10-4、3 0×10-5g·cm-2·d-1,浸出百分数为6 2%、0 3%,在盐卤溶液中浸出率相差不大,表明固化体能有效地持留Cs+、Sr2+,其他性能均符合大体积浇注的要求。
Simulated low and intermediate level radioactive waste was solidified in large volume poured alkaliactivated slag cement with high content of zeolite. The solidified form with its load of 135% nitrate and watersolid ratio of 034 possesses excellent flowability and workability. In deionized water, the leaching rates of Cs+?Sr2+ in 42nd day were only 25×10-5 and 13×10-6 cm·d-1(GB 702386?25 ℃), 07% and 02% cumulative leach percentage in altering. The relevances in 28 days reached 31×10-4 and 22×10-5 g·cm-2·d-1 at 90 ℃ or 56×10-4 and 30×10-5 g·cm-2·d-1at 150 ℃(MCC1P),and 35%?02% or 62%?03% respectively. They wouldnot change more in salt solutions. It shows that this kind of solidified form has strong retaining ability for Cs+?Sr2+. The other properties coincide with request of the large volume poured cement.
出处
《南京工业大学学报（自然科学版）》
CAS
2002年第6期20-25,共6页
Journal of Nanjing Tech University(Natural Science Edition)
基金
国家九五攻关项目(96 A18 02)
关键词
碱矿渣水泥
中低放废液
大体积浇注
水泥固化
沸石
核废料处理
alkali-activated slag cement
low and intermediate level radioactive waste
large volume poured cement cement
solidification
zeolite
