UHPC® Construction test for the deep sea use

Research in deep sea construction

For more than a year, we participated in a research project of a German university. It was about the exploration of future dome constructions for the deep sea.

For a few weeks, the result is available. The UHPC material manufactured by us passed the tests by far from other materials.
Dome models made of different materials have been tested for corrosion, leaks and pressure resistance. The compressive strength should be so high that the dome can withstand a sea pressure of 3500 m /2.17 mi permanently.

At the end of the long-term test, there were no cracks or other damage to the UHPC dome.
The research will be published in the coming weeks.


Research in deep-sea energy storage
Another interesting research project is the construction of compressed air storage balls
for the deep sea. The first concrete ball was
manufactured in Germany by the Hochtief
company and successfully tested as part of a
research program. A very good standard
concrete quality was used, but it reaches its

material limits with a diameter of over 30 m.

UHPC could be an interesting alternative
solution to this standard concrete here.

Why?
- UHPC has a very high compressive strength
    of over 200 MPa / 29000 psi
- UHPC has been used in the offshore sector
    for more than 30 years.
- UHPC is absolutely resistant to salt water
- UHPC is easy to pump and is self-compacting
- UHPC constructions can withstand much greater
    external and internal pressure loads than standard
    concrete
- Due to the enormous compressive strength, the
    necessary wall thicknesses can be reduced
    depending on the type of construction
- UHPC is waterproof from 10 mm thickness. Steel
    reinforcement is much more corrosion-proof in
    UHPC than in concrete
- UHPC has an extremely low to no pore volume.
- As far as the heat development during pressure
    build-up is concerned, the standard version of
    UHPC is temperature resistant up to 450°C. In
    the high temperature version, UHPC is
    permanent temperature resistant up to
    over 1000°C / 1832°F.


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