Dr. Timothy J. White, Robert L. Segall and Peter S. Turner
For the final storage of radioactive material, a variety of suggestions have been discussed and in part realized. According to the synroc (synthetic rock) concept, a “sodium titanate—sodium zirconate” is combined with (simulated) waste and, after cation exchange, reductively calcined. The crystalline material so obtained is characterized, among other things, by hydrothermal stability.