Development of a unified technological process for cementing solid radwastes

The results of research on cementing finely dispersed, mixed, closely packed, and coarsely fragmented solid radioactive wastes by mixing, flow-through, and impregnation to create a unified complex of technological processes are presented. A new method of impregnation which consists of feeding under pressure through a probe into the bottom of a container with solid wastes a cement solution with a high penetrating power is shown. The drawbacks of flow-through are eliminated, the integrity of the pouring is guaranteed, and the quality is monitored by determining the degree of impregnation and density of the cement solution which has passed through the layer of solid wastes. This method of cementing can be used for all solid wastes considered and the equipment and cement compositions are basic for the works cementing solid radioactive wastes.