为了研究辐照对放射性废树脂特种水泥固化体的影响,确保树脂水泥固化体在长期处置过程中的稳定性,该文重点比较了树脂固化体经过不同剂量的γ射线辐照前后抗压强度和冻融实验后强度以及核素浸出率的变化规律,并通过扫描电镜比较了辐照前后固化体水化产物微观结构的变化情况。研究结果表明:辐照会使固化体抗压强度降低,损失幅度随剂量的增加而增大,并会加剧冻融实验引起的固化体强度损失程度;辐照后固化体对浸出离子的吸附能力降低;微观结构中,铝胶胶团含量相对减少,辐照可能引起其水化产物中高铝凝胶的分解,从而导致对核素滞留能力的降低和浸出率的升高;在累积辐照剂量小于10~5 Gy时,辐照不会对固化体稳定性产生严重影响。 In order to study the influence of irradiation on the solidified body of radioactive waste resin and to ensure the stability of the resin-cement solidified body during the long-term disposal, this paper mainly compares the compressive strength before and after γ-ray irradiation The strength and the leaching rate of radionuclides after freezing and thawing were studied. The changes of the microstructure of hydration products before and after irradiation were compared by scanning electron microscope. The results show that the irradiation will reduce the compressive strength of the cured body, the loss amplitude increases with the increase of the dose, and will aggravate the strength loss caused by the freeze-thaw test; the adsorption capacity of the cured body after irradiation Decreased; the microstructure of the aluminum micelle content is relatively reduced, the irradiation may cause the decomposition of high aluminum gel hydration products, resulting in decreased nuclide retention capacity and leaching rate increase; cumulative radiation dose Less than 10 ~ 5 Gy, the irradiation will not have a serious impact on the stability of the cured body.