论文部分内容阅读
通过对硅酸盐水泥、碱矿渣水泥以及掺加沸石的碱矿渣水泥固化体在25℃和70℃下Cs ̄+的浸出行为研究发现,掺加30%沸石的碱矿渣水泥固化体28天Cs ̄+累积浸出量仅是硅酸盐水泥固化体的1/10,是碱矿渣水泥固化体的1/6-1/4。几种水泥固化体Cs ̄+的累积浸出分数Pt与t ̄(1/2)作图都呈折线关系,前3天Cs ̄+扩散系数大于后期。Cs ̄+的浸出主要取决于水泥固化体的结构致密程度和固化体连通孔溶液中游离Cs ̄+浓度,而后者则又与水化产物束缚Cs ̄+的能力成反比和水化产物的溶解度成正比。因此碱矿渣水泥固化Cs ̄+的能力大于硅酸盐水泥。同时探讨了水泥固化体Cs ̄+的浸出模型。
The results showed that the solid solution of alkali slag cement with 30% zeolite was solidified for 28 days with Cs ~ + at 25 ℃ and 70 ℃ by using Portland cement, alkali slag cement and alkali slag cement with zeolite, ¯ + cumulative leaching is only 1/10 of that of Portland cement, 1/6 to 1/4 of that of alkali slag cement. The cumulative leaching fraction Pt of several cement solidified Cs ~ + plotted with t ~ (1/2) are in a polyline relationship, and the diffusion coefficient of Cs ~ + in the first 3 days is larger than the latter. The leaching of Cs ~ + depends mainly on the structural compactness of the cement solidified body and the concentration of free Cs ~ + in the solidified fluid in the communication hole, while the latter is inversely proportional to the ability of the hydration product to bind Cs ~ + and the solubility of the hydration product Is proportional. Therefore, alkali slag cement Curing Cs ~ + capacity greater than Portland cement. At the same time, the cement solidified body Cs ~ + leaching model was discussed.