Super Cement (SC) Solidification Process

High-volume-reduction Process for Radioactive and Hazardous Wastes

JGC has developed an SC (Super Cement) Solidification Process, featuring high performance in stabilizing radioactive nuclides and hazardous materials. Using blast furnace slag as a solidifier, the SC Solidification Process produces a solid high in strength, thereby enabling a high volume reduction rate. Realizing low viscosity during mixing, this process also permits easier washing of mixers. The SC Solidification Process is applicable not only for radwastes but also for hazardous wastes, such as heavy metals.

Pilot Test Facility
Pilot test facility
Cement Mixture - Low viscosity
Cement mixture - low viscosity


  • Full compliance with Japanese LLW (Low Level radioactive Waste) criteria
  • Single kind of binder covering various types of wastes
  • Simple systems configuration: reducing investment
  • High volume reduction: reducing disposal cost (1/2 of conventional cement solidification)
  • Easier washing of equipment


Radioactive wastes from nuclear facilities (nuclear power plants or reprocessing facilities) and hazardous wastes

  • Nuclear facilities/Nuclear power plants (PWR, BWR)
    • Concentrated liquid waste
    • Ion exchange resin
    • Incinerator ash
    • HEPA filter
  • Reprocessing facilities
    • Concentrated liquid waste
    • Calcium phosphate
    • Incinerator ash
  • Industries in general
    • Incinerator ash
    • Wastes containing heavy metals


  • Actual liquid waste solidification experiments at nuclear power plant
  • Ash solidification experiments