Renovation of buildings and monuments whether new or antique with UHPC®

UHPC® materials have many advantages over
other materials in the rehabilitation of buildings
whether new or antique, historic or monuments.
The biggest advantage is probably its enormous
adaptability to the existing building fabric.
- UHPC® materials can improve the load
   bearing capacity or decide on a structural
   design that is under attack.

- UHPC® material can be applied thinly to
   protect the existing construction against all
   kinds of environmental influences over a
   very long period of time.

- Since UHPC® materials can be mixed very well
   with a variety of materials, whether new or
   antique, replicas can be created which have a
   higher resistance and bearing capacity than the
   original ones.

- Most natural stones and their structure could be
   copied with UHPC®. The copies can be given the
   structure by the casting mold or subsequently
   processed or polished like a natural stone.

- UHPC® materials that can achieve
   extremely fine and accurate structures can
   achieve absolutely identical replicas with a
   correspondingly high mold quality.

- Similarly, old facades can be repaired and
   completely replaced as a copy of the original 
   catch, but in a much thinner plate thickness
   than the originals so that there is still enough
   space for modern insulation in the most cases.

- Due to the very good flow properties, joints
   and cracks can be filled without extensive
   preparatory work.

- There is no need for special tools to use UHPC®
   material.

- UHPC® can use as mortar, cast or spray
   material.

www.hhbc-consulting.de
info@hhbc-consulting.de

UHPC - Environmental and Sustainability

The hhbc-consulting and WPE DK Team feel responsible for
working in close cooperation with architects,
designers, engineers, urban planners and
construction companies for a more sustainable
future.

Development of UHPC

Already during the development of UHPC Binder,
our goal is to use raw materials that are as
environmentally friendly and energy-efficient
as possible in production. At the suppliers of
cementitious binder systems, we pay attention to


their activities regarding environmental protection
and sustainability. Microsilica as well as fly ash
are waste products that we reuse but they come
from processes that consume enormous amounts
of energy. That is why we use these products in
very controlled quantities. In some of our UHPC
products we have been able to do without
microsilica or fly ash.
We plan to set up production facilities in Asia,
North America, South America and Africa in
order to use local resources and to limit
transport routes to a minimum.

Processing of UHPC

Our UHPC products can be mixed with 50% less
water than standard concretes. The water cement
value in our products is 0.2 to 1.8. In some
countries of the world there is a permanent lack
of water, which is only balanced with seawater
treatment plants that consume considerable
amounts of energy. If less water is needed for the
inforastructure, there is more drinking water for
the people.
Only sand is required for processing our UHPC
binders to concretes with a compressive strength
above 100 MPa and no gravel.
Due to the low precast weights the energy
consumption to the transport of production to site
is much lower.
As a substitute for the admixture of sand, a wide
variety of recycled materials can be used. Our
UHPC binder systems are ideal combination partners.

We have developed a new UHPC binder system that
can completely dispense with the previously
required sand and gravel qualities. Which will
drastically reduce the depletion of sands in the river
and coastal areas and the high-energy international
export.
In the future, we plan to drastically reduce the
production of UHPC materials in accordance with
our quality guidelines to various countries with
local raw materials in order to reduce the
high-energy material transports.

Application of UHPC

Due to the high compressive strength, the component
geometries can be selected smaller compared to
standard concretes, which leads to lower material
consumption and thus to lower component weights.
Our UHPC materials are many times more resistant to
all environmental influences than standard concretes.
Thus, the expected lifetime is several times higher than
standard concrete with almost no repair.
Even today, UHPC materials can completely replace
steel constructions in many areas and achieve a multiple
service life without corrosion protection and repair work.

From our high-density, buoyant UHPC concretes, ships
or islands with high load-bearing capacity and service
life can already be produced today. UHPC materials
are absolutely resistant to seawater.

The better the concrete quality is and with UHPC concrete
it is many times better than with standard concrete, the
longer the usage phase.

UHPC concrete for precast production

UHPC concrete has many commercial as well as technical
advantages over standard concrete for the production of 
precast concrete elements.
More and more architects are specifying UHPC concrete 
as a standard material for their façade design. There are 
no design limits for façade constructions.
In recent years, we have developed UHPC binder systems 
that can be processed into lightweight concretes or 
insulating concretes, especially for façade construction.

- We produce UHPC materials with a strength of
   40 MPa to 240 MPa.
- Our UHPC materials reach 70% of their maximum
   nominal strength within 48 hours. Faster strength
   developments are possible on customer request.
- We only need sand, not gravel, to process UHPC
   concrete.
- With our UHPC Desert Sand Binder, desert sand
   can also be processed without any problems.
- All of our UHPC materials are self-compacting
   and need no or very little vibration.
- Our UHPC materials have extremely little to no pore
   development.
- The nanotechnology development of our UHPC
   binders enables extremely fine surface structures to
   be created.
- With the use of fibre reinforcement it is possible
   to create very thin structures of high strength.
- For prestressed elements, the pre-tensioning force
   of UHPC material can be chosen to be much higher
   due to their very high strength than standard concrete.
- Very good flow properties for casting complicated
   geometry and filigree surface structures.

Processing of UHPC binders
Only a shaft or pan pot mixer is required for
processing.
The UHPC binder is mixed with sand or desert
sand and a very small amount of water.
It is not necessary to add additives.

Applications
  • Double walls 
  • Pre stressed elements 
  • Tubes
  • Bridgedeck elements
  • Stairs
  • Piles
  • Supports
  • Tunnel segments
  • Facade elements
  • Balconies
  • Sea defence units
  • Floor tiles in large geometries                
  • Security
  • Vertical garden (facade) elements
  • Sewage pipes and box culverts
  • Floating elements



UHPC Rehabilitation of concrete structures


Due to the old age and the increased and
rapidly increasing loads, for example due
to traffic and environmental influences,
an enormous number of concrete structures
are in need of renovation or have to be
completely replaced by new, more robust
structures. The renovation effort in the
infrastructure area is gigantic worldwide.
The focus here is on bridges.

UHPC Ultra High Performance Concrete
materials have many decisive advantages
over standard concretes when renovating
concrete structures. By using UHPC concretes,
material costs, assembly costs and assembly
times can be reduced and the service life of
the repaired concrete structures can be
extremely increased. Standard construction
machines can be used when installing UHPC
concrete.

The goals of repair or repair assembly are in
general

The restoration of stability and a stable concrete 
cross-section
Due to the enormously high strength values ​​of
UHPC compared to standard concrete and its
very fast strength development, the stability of
the construction can be quickly restored.
UHPC mortar, castable and shotcrete materials
can be used.

Increasing the load capacity
UHPC materials offer the structural engineer and
bridge designer the option of significantly
strengthening areas of the bridge structure that are
subject to high loads.

Maintenance or restoration of corrosion protection 
and frost resistance
UHPC is an almost non-porous material that is
absolutely frost and de-icing salt resistant, even
with a very thin layer of material. UHPC is also
absolutely seawater resistant and can also be
processed underwater. Thanks to these properties,
the repair effort for exposed reinforcements is
significantly lower than for standard concrete.
Only half of the material coverage is required
compared to standard concrete

Restoring or increasing the frictional resistance of 
the concrete surface
Through the addition of ceramic or mineral additives
and their very high adhesion to the UHPC material,
any friction coefficient can be guaranteed over a very
long period.

Restoring or increasing the fire resistance of components
UHPC HT (high temperature resistant) materials are
endurance-resistant up to over 1000°C /1832°F. All UHPC
materials are extremely resistant to shock temperature loads.

Increase thermal insulation
UHPC and UHPC HT in combination with extremely
thin high-performance insulating materials can lead to
high-strength and highly insulating structures.

Permanently closing cracks with a static and sealing function
UHPC Castable are based on nanotechnology, they are
extremely thin and penetrate into the smallest pores or
cracks and seal them permanently.

www.hhbc-consulting.de
info@hhbc-consulting.de