Final storage of radioactive substances in special UHPC concrete

One way to encapsulate such substances more

safely and cost-effectively than is currently

practiced is to pour into UHPC Ultra High

Performance Concrete blocks. UHPC has a

large number of advantages over the previous

storage in barrels of different material quality

and pouring into glass.

The advantages of new designs are:

- UHPC is very easy to process as a casting

and spraying compound.

- UHPC has an extremely high pressure

resistance compared to all standard concretes

- UHPC is completely waterproof

- What is poured into UHPC can not corrode

anymore

- UHPC is saltwater resistant
- UHPC also hardens under water

- UHPC in its high temperature version can

be used at continuous temperatures up to

1200°C/ 2192°F. This means that the

UHPC HT (High Temperature) block is

stable with internal temperature increase

as well as with external fire.

A secure above-ground storage against

theft is possible because the blocks are heavy,

large and therefore unwieldy for a quick

removal. Getting the radioactive material out

of the block is only possible with extreme

effort and tools and time.

- UHPC is based on nanotechnology, the material

particles are extremely fine. Almost allother

particles are surrounded by this glue from

extremely fine particles. Even with a break of a

UHPC block, the foreign matter is firmly trapped

in the debris.

- It is easy to mix radiation-reducing materials into

the block

- UHPC concretes can be very good heat-insulating

or very good heat-conducting. It's just a question

of the UHPC concrete mixture

The advantages of sealing existing deposits are

UHPC casting compounds can have a very high flowability and easily penetrate into cracks and joints and seal them.
UHPC casting compounds are self-compacting.
All casting compounds are pumpable and sprayable
All casting compounds reach more than 70% after 48 hours

Test