1. Introduction
2. Materials and Methods
    2.1 Concrete preparation and thermal treatment
    2.2 Decontamination process
    2.3 Stokes law – CaCO3 classification
3. Results and Discussions
    3.1 Classification
    3.2 Dense medium separation
4. Conclusion
Acknowledgement

• Seokju Hong(Division of Advanced Nuclear Engineering (DANE), Pohang University of Science and Technology (POSTECH), Pohang, South Korea, 37673)
• Sangsoo Han(Division of Advanced Nuclear Engineering (DANE), Pohang University of Science and Technology (POSTECH), Pohang, South Korea, 37673)
• Seongsik Nam(Division of Advanced Nuclear Engineering (DANE), Pohang University of Science and Technology (POSTECH), Pohang, South Korea, 37673)
• Won-Seok Kim(Division of Advanced Nuclear Engineering (DANE), Pohang University of Science and Technology (POSTECH), Pohang, South Korea, 37673)
• Wooyong Um(Division of Advanced Nuclear Engineering (DANE), Pohang University of Science and Technology (POSTECH), Pohang, South Korea, 37673)