UHPC concrete with rubble or demolition material

Building rubble or demolition material is a very valuable raw material today, its reuse (upcycling), in our opinion, a very important step for sustainability, reduction of raw material requirements, energy reduction in production and reduction of CO2.

Many architects and designers already work in their designs with materials that have become interesting building materials again through upcycling. Old makes new.

 

In Europe there are more and more companies that have specialized in the processing of used building materials. You are preparing demolition material for a new use in your own plant or already on the construction site. The demolition material is sorted and broken according to quality and color.
In conjunction with our HPC or UHPC binder systems, old building materials obtained through demolition are transformed into interesting new building materials with amazing properties.
The sorted and broken waste material is processed with an HPC binder material for later use as an aggregate in a very simple work step. After processing, the demolition material is suitable for processing with HPC or UHPC binder material and water into high-quality concrete, mortar and floor coverings. Plastics, rubber, porcelain and glass can also be processed as aggregates.

With HPC or UHPC casting binder systems, prefabricated elements or bricks can be produced.

New floor coverings can be produced from milled asphalt road surfaces in a few simple operations. This
processing process could be carried out directly on site with the appropriate screening and mixing machines.

 

 WPE DK International

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

UHPC Pavements in Multi-storey car parks impermeable and strong

In multi-storey car parks, paricular attention must be paid
to the following

• Constant vehicular traffic
• Chemical attack from oil, petrol and salt
• Rutting from continual driving along the same routes
• Braking
• Wear and tear from concerning traffic
• Spiked tyres
• Repeated freeze-thaw cycles
  

Floors in multi-storey car parks must therefore be able to withstand 

these stresses. Equally important, they must be impereable, preventing 

penetration of fluids or salt.

In designing a multi-storey car park, it is preferable to use a light but strong material to achive the most economical construction possible.

During construction, speed of installation and early trafficking are also important.

The key words for multi-storey car park projects are strength, impermeability and lightness.

 

UHPC TopLayer R (with reinforcement)
UHPC TopLayer R is recommended for particularly poor floor surfaces or for floors subject to high traffic loads.

UHPC TopLayer R is a combination of a special fiber-reinforced UHPC concrete and reinforcement mats.

UHPC Phalt
UHPC Phalt is a semi-flexible floor covering consisting of an asphalt supporting structure and UHPC Phalt binder as a filler. This combines the flexibility of asphalt with the strength and resilience of UHPC concrete.

 

 

 

Advantages of UHPC TopLayer and UHPC Phalt

• Very high bearing capacity
• Reistant to point loads
• Very high wear resistance.
• Minimal requrements for joints
• Impermeable
• Very good chemical resistance
• Slip resistance
• Level and smooth
• Rapid installation 

 

WPE DK International

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

 

Combination of UHPC and Nanotubes

We are being asked more and more often by
customers in Asia about the use of Nanotubes
in our UHPC products.
It is always the same question, can nanotubes
improve the technical properties of our UHPC
products? 

Our answer to that is:

Yes, Nanotubes with a certain geometry and size
can do that.  

BUT that's like trying to install an additional
carburetor / turbo system in a Bugatti Viron to
get 10% more engine power, with a standard
engine power of over 1000 hp. The Bugatti Viron
is a perfect car system, making it better with a
possible slight increase in performance only rarely
makes sense.

In other words:
A really good UHPC is a perfect, extremely
powerful system, which in today's industry
hardly ever reaches its performance limit.
The UHPC we make is made by creating a
perfect physical packing of specific particles
in order to achieve perfect chemical reactions.

We have been developing and testing the use
of Nanotubes in our UHPC products for more
than two years.
So far, these UHPC special products have only
been used in very special areas of application
that required very special technical solutions
in the areas of mechanics, electrical engineering
and thermal conductivity.
We have been developing and producing UHPC
systems for more than 25 years. We develop
UHPC products for the future. The processing
of Nanotubes and desert sand with our UHPC
products is part of our ideas for the future.

Sustainability and the use of natural materials
such as bamboo or natural fibers is another
development we are taking. The use of sustainable

raw materials in combination with our UHPC
materials, some of which will also be made from
sustainable raw materials in the future, is one of
our goals.

WPE DK International

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

UHPC lined hydraulic conveyor pipelines for brine in salt mines

More than 14 years ago, a high-pressure-safe

(loadable up to max. 100 bar / 1450 psi) brine

hydraulic transport pipeline with UHPC wear

protection was installed as a test for other lines.

The pipe installation took place underground. In

addition to the extreme pressure, the line

should be highly wear-resistant and highly

corrosion-resistant.

After all these years, we had the opportunity

to check this line together with the customer

on site.

A pipe element was also removed from the

line and cut open to inspect the UHPC lining.

Neither the customer nor we expected such an

extremely good result after all these years of

operation.

The UHPC lining has only lost a few

millimeters from its 30 mm lining.

Thanks to the seamless, waterproof UHPC

lining, no expensive corrosion protection was

necessary during wear protection assembly.

Which made assembly much faster and less

expensive than the linings previously used.

 

WPE DK International

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

HPC Leight weigth and standard products systems for architecture, civil construction and design

In addition to our UHPC offshore, industrial
flooring, wear protection, security product
systems, we will produce HPC product
systems for architecture, civil construction.

These products will not have the extreme strength
values ​​like the UHPC industrial qualities but have
all the characteristic properties of a high quality
UHPC, such as verygood corrosion resistance,
high early strength development, very good flowability etc.

The new HPC product qualities are:
HPC Leicht 25   Compressive strength 20 - 25 MPa (Lightweight)
HPC Leicht 35   Compressive strength 20 - 35 MPa (Lightweight)
HPC 45              Compressive strength 45 - 50 MPa
HPC 85              Compressive strength 80 - 85 MPa
HPC 135            Compressive strength 130 - 135 MPa

We will offer these HPC qualities in various
packaging sizes, most likely from 25 kg paperbag
to 1 to big bags. We will produce these HPC
products as mortar, castable and shotcrete or as
interieur or exterior plaster.

We can offer private customers as well as
industrial customers all UHPC qualities as
pure binder material or as a mixed material
binder + aggregate.

 

WPE DK International

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

Test your UHPC Know How - Learning Module

This is one of our learning modules for UHPC Concrete. A new version will be released this year. We use such modules for training purposes. New ones are added every year. This year there will be four new modules. 

You want to check your answers for correctness? Send us an email service@hhbc-consulting.de with the password "LMS 1/6" and we will send you an answer sheet.

Module no. 1/6

What are the main components in UHPC?

1. Cement, microsilica, superplastisizer
2. Cement, flyash, superplastisizer
3. Epoxy, microsilica, dispersant
4. Cement, sand, epoxy
5. Cement, sand, microsilica

Acid will deteriorate UHPC

1. True
2. False
3. Only if pH is below 5
4. Only if pH is above 5
5. Only if pH is below 3

Alkali will deteriorate UHPC

1. True
2. False
3. Only if pH is above 12
4. Only if pH is below 12
5. Only if pH is above 13

The following aggregates are used in UHPC Standard wear protection?

1. Quarz
2. Bauxite
3. Corundum
4. Silicium carbide
5. Titanium carbide

The wear resistanse of UHPC increases with these aggregates?

1. Quarz, bauxite, corundum, silicium carbide
2. Bauxite, quarz, corundum, silicium carbide
3. Silicium carbide, bauxite, quarz, corundum
4. Bauxite, corundum, quarz, silicium carbide
5. Silicium carbide, corundum, bauxite, quarz

What is the lowest temperature at which it is ok to install UHPC?

1. 20°C / 68°F
2. 10°C / 50°F
3.   5°C / 41°F
4.   0°C / 32°F
5. - 5°C / 23°F

What do you need to protect UHPC against when installing it?

1. Drying out
2. Freezing
3. Wind
4. Direct sun
5. Rain

What should you focus on when mixing UHPC in regards to water?

1. The product cannot seggregate
2. The product must remain dry
3. There must be free water on top of the product in the mixer
4. You cannot add too much water to UHPC
5. Any mixing problem can be solved by adding more water

You notice lumps in a bag of UHPC Binder, what do you do?

1. No problem, I just add more water when mixing
2. I contact hhbc-consulting or to have a new bag
3. I control the storage environment
4. I discard the bag
5. I check the date on the bag to see age of product

When mixing UHPC lumps are formed shortly after adding of water?

1. No problem, I just add more water
2. I wait a while to see if they mix out, if not I will add a little more water
3. I throw away the mix
4. I check if the mixer is proper prepared for mixing UHPC
5. I increase the speed of the mixer

When mixing UHPC I notice free water on the surface of the mix?

1. No problem, Just need to use the product fast
2. I allow the mixer to run for longer time, untill the free water is no longer there
3. I will try to scoop out the free water
4. I throw away the mix
5. I add more powder untill the free water disappeares

What is the purpose of Microsilica in UHPC?

1. It is packing between cement particles, increasing density and displacing water
2. It is like little ball bearings making the mortar more flowable
3. It reacts with Ca(OH)2 from the cement hydration and create a denser material
4. It has no significant effect, just a filler to make the product cheaper
5. There is no microsilica in UHPC

What is the purpose of superplasticizer in UHPC?

1. It makes the product more flexible
2. It charges all particles so that they repell each other. At the same time it makes stearic hinderence so that particles cannot bridge build on each other, and in this way it displaces water.
3. There is no superplasticizer in UHPC
4. It is a polymer, added to make the product easier to mix
5. It is lubricating the particles so that they can react better

UHPC Binder can be installed over head?

1. True
2. False
3. Sometimes if you are lucky
4. Only during the weekend
5. Only if you use a special throwel

HT products can be used in temperature areas of

1. Up to 1200°C / 2192°F
2. Not above 1000°C / 1832°F
3. Not above 600°C / 1112°F
4. Not above 400°C / 752°F
5. Not above 200°C / 392°F

UHPC (not HT) can be used in temperature areas of

1. Up to 1200°C / 2192°F
2. Not above 1000°C / 1832°F
3. Not above 600°C / 1112°F
4. Not above 400°C / 752°F
5. Not above 200°C / 392°F

It is important to know what chemicals UHPC will be subjected to

1. True
2. False
3. Only acid or alkalies
4. Especially if there are salts present
5. Only if temperature is above 100 deg C

When mixing you notice the wetting time is increased. What do you do?

1. No problem, I just add more water
2. I wait it out for a while to see if it wets through, and I adjust the water accordingly
3. I throw away the mix
4. I ignore it
5. Cross my fingers and hope everything will be ok

What happens to UHPC if too much water is added?

1. Nothing, you can add as much water as you like
2. The product will most likely seggregate, but properties will in general be reduced in direct correlation with the amount of water added.
3. Especially if we are working with a UHPC Cast product, installation will be a lot easier
4. Strength will increase as we will hydrate more cement
5. The stickyness of the product will increase a lot

How does UHPC differ from cement/concrete?

1. It is the same, no difference
2. UHPC is stronger in terms of compressive strength
3. UHPC is more dense
4. Concrete is more flexible
5. UHPC can be installed under water

How does UHPC differ from refractory?

1. It i the same, no difference
2. Refractory needs heat to finalize its reactions, UHPC does not
3. UHPC is more wear resistant
4. The insulation properties of UHPC is better than that of refractory
5. UHPC can withstand higher temperatures compared to refractories
    
    
   WPE DK International
   
   Phone: 0049 176 601 73146
   E-mail: ber@wpe-dk.dk
   Homepage: www.wpe-dk.com

Roman roads and modern roads construction system

Old roman road

A "Römerstrasse / Roman road" runs not far
from our office. As the name suggests, this
road was built by the Romans.
Expert estimates the completion of the road,
approximately 100 km long, in the year
200 AD. This road is about 1820 years old
and is still used as a country road today,
despite a large number of local European wars
and two world wars in these 1820 years. The
structure of this Roman road was never changed,

Roman road structure

the only thing that was "modernized" was an
asphalt layer.

If we look at our "state-of-the-art" roads in
most countries of the world today, it can
easily be said that none of these roads will
last for a century. In many cities, the
pavement lasts less than 10 years and in
some highly developed countries of the
world, the pavement lasts less than a year.
Sad but true.


What was important for these Roman streets?
It was the underground structure and the road
surfaces that have survived these roads for so
long. The Romans already knew concrete, but
not only as a road surface, but also as part of
the underground structure.

Roman road today

As without a proper underground structure and
high quality road surface, modern roads cannot
get better but only worse than the Roman roads.


UHPC road surfaces, whether as UHPC concrete
or as UHPC Phalt surfaces, are extremely resistant
and are far superior to all previous road surfaces,
but they still need a correct, stable substructure.
This quality underground structure is particularly

Modern road structure

important for industrial roads and industrial storage
areas.

The interesting thing is that the layer thickness of
a modern, efficient road construction corresponds
in its total layer thickness to that of Roman roads.

 

WPE DK International

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


 

Recycling of old building materials with HPc and UHPC bindersystems

In our fast-moving times, old houses, some of
them historical houses, are being brutally torn
down to make room for new, more modern,
larger, higher and often not more beautiful but
more effective new building designs. Very
often there is no time left and there is often no
will to secure the valuable and reusable old
building material.

The end of an old building is a heap of rubble
that is only suitable as gravel material for the
subbase material of streets.

The architects in particular could campaign
for the reuse of such materials. It would be
entirely possible to reuse these old materials
in modern design concepts and to save some
valuable raw materials.

This year we will start some attempts to
combine UHPC with a variety of old used
materials. We are very sure that this is
possible without any problems, both in terms
of statics and construction. Of course, with
UHPC we can copy old materials in
appearance and design extremely precisely,
in some cases this is certainly sensible and
necessary. However, we want to reuse old
materials and hand them over to a new
design function. Even building rubble could
become a very interesting concrete material

in combination with UHPC. We also want
to give architects and designers new design
options using old and ultra-modern materials.

UHPC Security projects in south of Europe

Two new UHPC security projects are
scheduled for the coming year. Both
projects are to be carried out in Europe.



The first project is a concept for securing
private property. In a former mine in the
Alps, securing rooms of the highest security

class are to be installed in former tunnels
on different levels of this mine. In order to
maintain this safety class by insurance
companies, investors have specified the
extension of the tunnels and individual
rooms using UHPC concrete.
In the first stage, about 8000 tons are to
beinstalled.



The second project also applies to the
protection of private property. In this
concept, a former military nuclear bunker
is being rebuilt. Again, most of the new
structural alterations are planned with
UHPC.
For both projects, UHPC concrete is just
one part of the backup work. We have
developed a new UHPC material quality
for both projects, which can be optimally
processed in very large quantities in both
very different locations.

Mixing UHPC Concrete - A simple process

A real UHPC (Ultra High Performance Concrete) 
consists of a maximum of three components:

• UHPC binder
• Water
• Aggregates, such as quartz sand with a grain size of 0-3 mm

Nothing else is necessary. No further additives.

UHPC concrete of exceptional quality is an
easy-to-manufacture material, provided you have
the right high quality components. For more than
25 years our UHPC Mortar, UHPC Cast, and

UHPC Shotcrete have been mixed by specialists

and amateurs around the world.

 
Let's start with the most important thing, the mixer.
We need a compulsory, pan-pot or shaft mixer for
small to medium UHPC concrete volumes.
For larger UHPC concrete quantities, the use of

continuous mixer is recommended.

If you are not sure whether your mixer is suitable

for processing please contact us, we will be happy

to help you.

1st operation
Mix UHPC binders and aggregates, such as quartz
sand, in a proportion of one bag of binder (25 kg)
and one bag of quartz sand (25 kg) dry for
approx. 3 minutes.

2nd operation
Add water, add approx. 3.8 liters per 25 kg UHPC
binder and mix for at least 7 minutes.

3rd operation
Install the material. For the installation by a average
ambient temperature of 18° - 25° you have about
45 minutes time.

4th operation
Seal the newly laid surface with a suitable wax liquid
such as UHPC curing compound or a suitable foil.

That's it.

All our UHPC materials are mixed in this way. If you 
have mixed one UHPC material quality, you can mix 
all other UHPC material qualities as well. 
Simple and easy.

We also provide a detailed Mixing and processing 

manual for UHPC Cast, UHPC Mortar and UHPC

Shotcrete, with many practical tips

You can order this manual at the following e-mail address 

service@hhbc-consulting.de and 

password "UHPC mixing and application manual."

At this address, we also answer all your questions about our
UHPC technology mixing and applying UHPC under normal
conditions and under extreme conditions.


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

New use of recycled windmill rotor blades as aggregate for UHPC concrete

UHPC grouting material is used worldwide in the

in the offshore and onshore industry worldwide for more than 25 years. 

Mostly, UHPC Grout has been used to make transition pieces and foundation systems for wind energy, oil production, tidal power plants and floating windmill platforms. There are also plans to use UHPC concrete as corrosion protection for the systems in these areas. It would be a safe, easy to install, cost effective and durable solution. Another development for the future is the combination of UHPC concrete and recycled rotor blade material. Several thousand used rotor blades from offshore and onshore wind turbines are lying on the ground around the world to be recycled or disposed of. Storage has become a very big problem in some countries. In many industrial
applications we use glassglass fibres, carbon fibres or plastic fibres asaggregates to our UHPC concrete. 

 

In order to carry out reuse, recycling and upcycling as standard in the near future, special UHPC concretes are the ideal combination partner. It should also be possible to add construction material from wind turbines to our UHPC with appropriate processing. This could then possibly be used again as foundation material for new onshore or offshore wind turbine.

Garden-, park and costal design with UHPC

Garden and park design
From small private gardens, lakes, rivers and parks of all types and sizes, UHPC is an ideal material for nature-identical structures.

With UHPC, objects such as buildings, rocks, waterfalls, natural stones, etc. can be perfectly integrated into nature.
The benefits of UHPC for the architect and designer are

• UHPC can be easily processed on site or as a prefabricated element of any size and geometry
• UHPC achieves much higher strength values ​​than concrete
• UHPC is extremely corrosion resistant
• UHPC is water impermeable even in small material thicknesses
• UHPC can be processed as a mortar, casting compound or as a spray mass
• UHPC can also be processed under water
• UHPC is absolutely seawater resistant
• With UHPC, the finest surface textures can be achieved
• UHPC is an ideal combination material. It can be combined with nearly all minerals, metals, glasses and plastics without problems
• It can be achieved in constructions that are placed in nature or in water lifetimes up to 100 years.

If you have any questions about this topic, feel free to contact our partner in Houston Texas Asante.
He has many years of experience with garden, park and coastal design in conjunction with UHPC

Contact
ASANTE, Houston Texas
Douglas Miller  phone 774 208 1766

Shore and coastal design
UHPC of the right quality withstands extreme loads from nature. In addition to the advantages

already described above, the following advantages can be added for the shore and coastal design

• UHPC is extremely resistant to wear and impact in the right composition
• UHPC does not lose its strength either at extremely low temperatures (-180°C / -292°F) or at extremely high temperatures (450°C / 842°F)

UHPC is much better for coastal protection and tsunami protection than standard concrete or steel.

Precast elements and Tilt-up manufacturing with HPC and UHPC concrete

HPC and UHPC concrete are very suitable for processing on the construction site in the Tilt-up system or in precast concrete plant. Residential housing and industrial buildings of all sizes can be manufactured using these two systems.

HPC and UHPC concrete has a long list of advantages over standard concrete

- High tensile strength- Extremely high compressive strength
- Very fast strength development
- UHPC elements have a very high production accuracy. If the mold is   exact, the element is exact.
- High chemical resistant
- Absolute corrosion resistant
- Even small layers already lead to an absolute waterproofness.

- Customer requirements such as burglary resistant, fire resistant, storm resistant and acoustic properties as well as noise reduction can be easily met.
- Combinations with a high-performance insulation layer reduce energy costs by several times compared to wooden houses or brick houses.
- The required wall thicknesses are only a fraction of comparable housing designs.

Tilt-up elements
Tilt-up elements are manufactured using locally produced molds and concrete in a wide variety
of HPC and UHPC concretes produced by us achieve 70% of their nominal strength in just 48 hours, the average nominal strength of our UHPC concretes is 140 MPa / 20000 psi.

Due to the compessive and flexuaral strength, it is possible to work with considerably smaller wall thicknesses, which leads to substantial material reductions and costs.
The extremely fast development of strength leads to faster assembly, the overall completion time is significantly reduced, which can also lead to cost reduction.

Precast elements
Prefabricated systems have been used in Europe for more than 50 years. There is a huge amount of standard residential house design variations from small houses, garages, workshops to entire building

complexes. Architects design exceptional prefabricated houses according to customer requirements. The elements are already manufactured and prepared weeks in advance in a precast plant, so that only a few days are needed on the construction site for a complete completion.
The advantage is the very small footprint on site.
The elements come with trucks in the correct assembly order on the construction site. A crane positions the elements and very few fitters are needed for assembly. It can be installed all year round, regardless of the weather contitions.