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 concrete constructions for the deep sea.
For a few
weeks, the result is available. The UHPC Binder material manufactured by us
passed the tests by far from other binder materials.
The reasearch team of the university did models made of different concrete materials The models have been tested for corrosion, leaks and pressure resistance. The compressive strength should be so high that the concrete construction 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 concrete construction.
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 3 m.
One problem that still needs to be solved is the limited transportability of such hollow spheres due to their diameter.
For commercial use, the diameter must be larger. This means that the hollow spheres have to be manufactured on site, which is very costly, or the hollow sphere is manufactured from several prefabricated UHPC concrete elements, similar to the tower elements in wind power plants.
UHPC Offshore grouting could be an interesting alternative solution to this standard concrete here.
Why?
UHPC has a very high compressive strengt 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 greate external and internal pressure loads than standard concrete. Due to the enormous compressive strength, the necessary wall thicknesses can be reduce depending on 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.
