In the frame of the dismantling and decommissioning of nuclear power plants, various waste streams are produced that must be treated and conditioned for long-term disposal. One of these waste streams are spent ion exchange resins. The focus of the conditioning lies on the one hand on ensuring safe final matrix properties, on the other hand on waste volume minimization. The most common conditioning technique is the mixing of the radioactive waste with cement with the aim to form a stable matrix for the final storage.