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该文以硫铝酸盐水泥(SAC)为固化基材,以沸石为添加剂、熟石灰为促凝剂,研究了乳化剂用量对放射性废有机溶剂水泥固化性能的影响,包括浆料流动度、凝结时间及固化体28d抗压强度等,比较了MR-1和T-80型这2种乳化剂作用下模拟放射性废有机溶剂的水泥固化效果。结果表明:这2种乳化剂作用下均可有效固化放射性废有机溶剂(TBP/OK)。所得浆料流动度在17.1~24.5cm之间,凝结时间在20~44min,固化体28d抗压强度均大于7MPa,符合GB14569.1-2011规定。与MR-1比较,T-80型乳化剂所得浆料流动度较小,凝结时间较短,且随乳化剂加量的增加均呈递增趋势;T-80型乳化剂所得固化体28d抗压强度较大。X射线衍射法(XRD)分析显示:废有机溶剂和乳化剂的加入没有改变水泥水化产物。
In this paper, sulphoaluminate cement (SAC) is used as the substrate, zeolite as additive and hydrated lime as coagulant. The effects of emulsifier dosage on solidification performance of radioactive waste organic solvent cement are studied, including fluidity of slurry, Time and cured 28d compressive strength and so on, compared the two kinds of MR-1 and T-80 emulsifier simulation of radioactive organic solid waste curing effect. The results show that the two kinds of emulsifiers can effectively cure radioactive waste organic solvents (TBP / OK). The resulting slurry fluidity between 17.1 ~ 24.5cm, setting time of 20 ~ 44min, the cured 28d compressive strength are greater than 7MPa, in line with the provisions of GB14569.1-2011. Compared with MR-1, the fluidity of slurry obtained from T-80 emulsifier is smaller and the setting time is shorter, and the amount of emulsifier increases with the increasing amount of emulsifier; The curing time of T-80 emulsifier is 28d Greater strength. X-ray diffraction (XRD) analysis showed that the addition of waste organic solvents and emulsifiers did not change the cement hydration products.