Since the beginning of this year, we have been working with several companies on an offshore project to
store hydrogen.
The hydrogen is to be produced and stored on a floating platform off the coast. Several storage units are planned that can be exchanged. The storage units are planned to be made of UHPC concrete.
For the construction, it is currently planned to use UHPC concrete with a compressive strength of over 200 MPa. Currently, the static and constructive calculations are being worked on. The first drafts are expected in two months.
UHPC Ultra High Performance Concrete is a material with immense possibilities. WPE DK International has more than 30 years experience in the development, production and industrial applications of UHPC Ultra High Performance Concrete materials. We produce UHPC Mortar, UHPC Castable, UHPC Shotcrete, UHPC Offshore, UHPC Security, UHPC TopLayer und UHPC Wear Protection
Showing posts with label Germany. Show all posts
Showing posts with label Germany. Show all posts
Offshore hydrogen storage system made of UHPC
Labels:
Alternative Energy,
caisson,
Corrosion protection,
Deep sea construction,
Environmental,
Floating construction,
floating platform,
Germany,
Hydrogen storage,
Italy,
LNG,
Netherlands,
Norway,
SPain,
USA
UHPC 3D printing
It
is interesting to see today what printing results universities and
printer manufacturers achieve.
The
results are an interplay between printer technology and material
technology. In my opinion today, very good results are achieved in
the design areas with the printers, but many problems still have to
be solved in professional architectural building construction.
There
are
Compressive
strength
The
standard concrete reaches its maximum compressive strength after 28
days. For the printing technology unacceptable, here must be helped
with accelerator. Printing speed and strength development must be
matched and optimized without loss of strength.
UHPC Ultra High Performance Concrete can be a solution. Strengths of over 200 MPa can be achieved here. Already during the UHPC binder production, we can adjust the strength development, as well as the flow characteristic. The addition of commercially available additives is no longer necessary.
UHPC Ultra High Performance Concrete can be a solution. Strengths of over 200 MPa can be achieved here. Already during the UHPC binder production, we can adjust the strength development, as well as the flow characteristic. The addition of commercially available additives is no longer necessary.
Of
course you want an optimum speed, you want to process a large amount
/ weight of concrete in a very short time. The concrete should be
able to support itself after a very short time and be load-bearing
for ceiling elements.
With UHPC materials, large amounts of material are already processed in a short time using the wet and dry spraying process. The consistency of the UHPC print material can be adapted to the printer characteristic. UHPC materials already develop high strength values in short time in the standard qualities. However, this time can be extremely reduced by changing material production.
With UHPC materials, large amounts of material are already processed in a short time using the wet and dry spraying process. The consistency of the UHPC print material can be adapted to the printer characteristic. UHPC materials already develop high strength values in short time in the standard qualities. However, this time can be extremely reduced by changing material production.
Statics
The
print heads are usually small in diameter and the applied wall
thicknesses compared to a masonry or a finished concrete wall are
very thin. Static load-bearing walls can be printed for several
floors, or double-skin walls must be printed in order to achieve a
structurally stable construction. Do I have to print double-shelled?
Heat
/ cold insulation
If
I print with a standard concrete I do not achieve any insulating
properties. So I have to print double-shelled and fill the cavity
with insulation material or retrofit an insulating layer from the
inside.
At the moment we are the only ones who are able to combine a high pressure resistant material with an insulating material. This combination material is also pumpable.
At the moment we are the only ones who are able to combine a high pressure resistant material with an insulating material. This combination material is also pumpable.
Steel
girders, reinforcements
Even
with 3D printing, you can not ignore reinforcements and support
structures, or you can remain eternally restricted to small, simple
and low-rise building constructions. How can I optimally combine
carrier structures, steel reinforcements with a single printing
process?
Last
but not least interesting design
So
far I have seen the obligatory pressure bulges on all prints. For the
beginning, this may be fine but soon you should have printing
technologies that ensures a sharp-edged pressure even on the wall
corners. A rework of the walls in the flat areas to get is cost and
time consuming. Of course, when I use the printing technology, I also
want to print exceptional geometry and thin-walled constructions.
I
have a note at the end
If
all my misgivings can be wiped out the question remains if I want to
print a large building, I need a fairly large printer technology
which is not even built and dismantled and I need a very fast
continuous flow of material to the printer when the printer should
work quickly.
I
do not want to know misunderstood. I think 3D printer technology is
very interesting for the future and I know that some engineering
companies are working on technical solutions. As part of our material
development, we also work on a flexible, extreme fast-curing,
high-compressive strength material for the printer producer. In close technical agreement with the respective printer manufacturer, we can adapt our UHPC materials to the requirements and provide test material to the printer manufacturer.
Labels:
3D Printing,
Architect,
Canada,
Civil construction,
civilengineering,
concrete printer,
Decorative concrete,
Designer,
France,
Germany,
Interieurdesign,
Italy,
Residential housing,
university,
USA
Corrosion problems at offshore wind turbines solved with UHPC concrete
You have the solution already built in your
wind turbine system UHPC Ultra High
Performance concrete material was already
used in the first wind turbines and has been
stable to date and not replaced.
UHPC is absolut seawater resistant and you
can cast it into the seawater if necessary. No
elaborate preparation is necessary and the
corrosion protection will last for at least 100
years without having to be repaired.
Most system suppliers for offshore wind
turbines have known this for a long time.
The UHPC material would have to be
modified a bit, that's all.
We modifed it and it work together
with a simple installation system perfect.
The assembly costs and the operating costs
for a complex anode/cathode system is
several times higher and this electrical
system must be monitored regularly.
Well, there are several ways to tackle the
corrosion problem
- You let it rust because the system is already
so old
- You can apply an extremely complex anti-
corrosion paint system. Very expensive and
the durability is extremely limited.
- UHPC is applied to the steel structure as a
protective layer.
A relatively simple and safe installation with
a durability of more than 50 years
- UHPC is used as a constructive measure to
improve or stabilize the load-bearing capacity
of the foundation
- UHPC is brought up as a constructive measure
in connection with the design of an artificial
reef around the foundation in order to improve
the situation of the marine fauna.
Labels:
Canada,
Corrosion protection,
Germany,
Indonesia,
Italy,
Malaysia,
Marine,
Navy,
Offshore,
Offshore corrosion protection,
offshore installation,
Offshore Windmills,
SPain,
subsea installation,
UHPC,
USA,
USACE
Subscribe to:
Posts (Atom)