针对高盐、高碱中低水平放射性废液的特性，研究了掺合料的种类、掺量对水泥固化体Sr2+，Cs+的浸出性能的影响。结果表明，矿渣和粉煤灰同时掺入，对降低Sr2+的浸出率较为明显；沸石、凹凸棒石的掺入，对降低Cs+的浸出率显著。当硅酸盐水泥：矿渣∶粉煤灰∶沸石∶凹凸棒石=4∶2∶2∶1∶1时,42 d Cs+的累积浸出率仅为未含掺合料时的15.2％。浸出液的电导率表明，矿渣、粉煤灰、沸石、凹凸棒石的掺入对废液中的可溶性盐固化有利。用掺有矿渣、粉煤灰、沸石、凹凸棒石的硅酸盐水泥固化模拟高盐、高碱中低水平放射性废液时，固化体中Sr2+，Cs+的浸出率可以满足GB14569.1-2011的要求。%The influence of the addition of mineral admixtures on the leaching behavior of Sr2 + and Cs + in cement solidified forms containing simulated high salt and alkali-loaded low and intermediate level radioactive liquid waste was investigated. The results show that the addition of both slag and fly-ash can reduce the leach rate of Sr2 + , while the addition of zeolite and attapulgite can reduce the leach rate of Cs + obviously. The cumulative leach rate of Cs+ in the solidified form with cement : slag : fly-ash : zeolite : attapulgite in the ratio of 4 : 2 : 2 : 1 : 1 is 15. 2% of that in Portland Cement after leaching for 42 d. Furthermore, the addition of slag, fly-ash, zeolite, and attapulgite facilitates modified the solidification of dissoluble salts. The leach rates of Sr2 + and Cs+ in the above mineral admixtures-modified Portland cement solidified forms can satisfy the requirements of GB14569.1 -2011.
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