Czech-Japanese Research Gains Global Attention

Czech Concrete Research for Nuclear Power Plants Gains Global Attention

An international collaboration between the Research Centre Řež, the University of Tokyo, Kajima Co., and the Mitsubishi Research Institute has yielded significant findings on the behaviour of concrete under nuclear conditions. The research, led by Professor Maruyama from the University of Tokyo and published in the prestigious Journal of Nuclear Materials, has attracted considerable interest from both the scientific community and the general public. It has been featured in global media outlets such as ASCE Civil Engineering Source, ASM International, AZOBUILD, and Yahoo News.

Strong Czech Contribution

Our organization played a central role in the research. Concrete samples were irradiated in the
LVR-15 research reactor and subsequently tested in our hot cells, as part of the open-access research infrastructure CICRR. These experimental activities formed the foundation of the study and significantly contributed to its outcomes.

The research brought new insights into the long-term durability of concrete, including the surprising self-healing effect of quartz crystals after irradiation. These findings could influence the design and maintenance strategies for nuclear power plant structures worldwide.

Key Findings

• Concrete may be less susceptible to radiation damage under real-world conditions than previously assumed.
• Different types of aggregate responded differently to irradiation – highlighting the importance of proper mix selection.
• Quartz crystals in concrete showed signs of regeneration after neutron exposure, which could potentially extend the lifespan of structures.
• The results could contribute to updates in standards for the construction and maintenance of nuclear facilities.

International Recognition

The attention this research has received from leading global media confirms its quality and relevance. Czech participation in such a high-profile project underscores the expertise and technological advancement of our research institutions – and of the Czech Republic as a whole.