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 HT and concrete under heavy fire

Again and again we hear of skyscrapers or facade
fires. In the rarest cases the fire is quickly and easily
extinguished.

The longer the fire lasts and the fire temperatures
reach a maximum (about 1000°C/1832°F), the
more problematic it becomes for the steel and
reinforced concrete structures, especially in older
houses that do not have the latest fire protection
technology.

Concrete can easily withstand a temperature of
300°C/572°F for a longer time. At a temperature

above 400°C/752°F, the compressive strength of
the concrete decreases. At a temperature above
600°C/1112°F, volume increases occur in reinforced
concrete, which can lead to external flaking or
cracks within the concrete structure.

The time factor is a crucial factor for the stability
of the construction.
Today we try to increase the period of the temperature
penetration of the reinforced concrete construction
by higher concrete coverings.

We developed and produce UHPC HT which has
a temperature resistance over 1000°C/1832°F. So
far, this material has been used especially in the
steel industry, but it is certainly an interesting
material for the construction industry in certain areas.

UHPC HT materials remain stronger in all
temperature ranges than those of standard concretes.

That means no matter what temperature and
burn time, UHPC HT compressive strength
far exceeds that of standard concretes.

This quality of UHPC HT could mean for the
fire fighting, that the danger of a building collapse
is reduced by a multiple.

UHPC HT concretes combine them very well
with highly efficient insolation materials. From
the experience of the steel industry we know
that we can achieve extreme temperature
reductions even in very thin wall thicknesses.

 

WPE DK International

Phone: 0049 176 601 73146
E-mail: info@wpe-dk.dk
Homepage: www.wpe-dk.com

UHPC Concrete for process temperatures up to 1200°C / 2192°F

UHPC is a ultra high-strength concrete with
compressive strengths of well over 250 MPa.
We are the only one producers in the world who
offer special UHPC Ultra High Performance
Concrete binders for continuous temperatures
up to 1200°C / 2192°F.
We producing and using such high temperature
solid UHPC materials for more than 25 years.
We produce UHPC HT for processing as
mortar, casting material or as shotcrete. The
processing of UHPC HT masses is almost
identical to that of standard concrete masses.

UHPC HT compounds can be processed in
combination with various high temperature
resistant aggregates or in combination with
insulating materials.
Such a combination system can protect your
production equipment or construction against
extreme heat, wear and corrosion attack.
UHPC HT and a thermal insulation layer can
reduce the layer thickness and the material
weight by more than 50% compared to
refractory concrete. Temper work as with
refractory concrete is not necessary, which in
turn reduces energy costs and installation time.
UHPC HT materials are used in new construction
projects as well as in refurbishment projects
of existing constructions.

When steel constructions are exposed to extreme
temperatures due to fires, they quickly lose their
strength or bearing capacity and dangerous
situations can arise. Construction made of
high-temperature resistant UHPC HT lose only
a small amount of strength and thus load capacity.

Especially in the construction of buildings, the
use of load bearing elements made of high temperature
resistant UHPC HT could increase safety many
times over.
It could give firefighters time to fight the fire
successfully without the danger of building collapse.

Applications

Building industry                                                                            
 - Support                                                             
 - Pillar                                                                 
 - Walls                                                                
 - Facades                                                             
 - Persons shelters/rooms                                     
 - Storage rooms for dangerous goods                 
 - Floors
 - Tunnel systems
 - Emergency routes
 - Staircases

 Producing industry
 - Bins for hot products
 - Foundries
 - Cement works
 - Steel works
 - Chemical industry
 - Hot material hopper
 - Bins of dangerous goods
 - Offshore
 - Refinery

 

WPE DK International

Phone: 0049 176 601 73146
E-mail: info@wpe-dk.dk
Homepage: www.wpe-dk.com