Showing posts with label pavement. Show all posts
Showing posts with label pavement. Show all posts

UHPC Phalt a semi-flexible pavement system

UHPC Phalt is a grouted macadam comprising an open graded asphalt that is flooded with high strength microsilica based mortars. The open graded asphalt is mixed to a design mix at a local asphalt plant and delivered to site in tipper trucks. It is placed via traditional paving techniques.
The UHPC Phalt mortars are delivered in 1 tonne bags and mixed via a continuous flow shaftmixer and pump machine. The mortar is mixed for a certain amount of time to achieve correct viscosity then
flooded via a large hose onto the asphalt matrix.

UHPC Phalt can be laid at depths of 30 mm / 1,18 in upwards (typically maximum depth used is 40 mm /1,57 in). UHPC Phalt is the top layer of the pavement that is supported by a basecourse layer. The basecourse layer can vary dependent on environment and loadings, internal or external applications. Preferred basecourse materials to support the UHPC Phalt topping are high modulus macadam basecourse. CBM bases are ideal for use for large internal areas.

Asphalt disadvantages insufficient stability and deformation resistance


- Static point loads
- Trailer supports
- Forklift traffic
- Tracked vehicles
- High-bay warehouse / heavy-duty warehouse
- Ruts, wave formation (bus stops, intersections,    
Open graded Asphalt
  roundabouts)
- Low wear resistance when using forklift forks,
  loading shovels, roll containers

Advantages of UHPC Phalt

- Very high load carrying capacity
- Frost and dew resistant
- Jointless laying
- Quick installation
- High early strength
- Temperature resistant from - 60°C/-76°F 
UHPC Phalt
   to  +90°C/194°F 
- High wear resistance
- Resistance to aggressive media
- Long service life 
- Good to very good recyclability
- Much faster to lay than standard floor concrete
- Very short curing time
- Substantially cheaper than standard floor concrete

Where is UHPC Phalt used?

- Airports
- Ports
- Lorry marshalling areas
- Service yards
- Acces roads
- Bus stations / depots
- Waste management facilities
- Roads
- Car parks
- Distribution center
- Indoors for warehouse floors
- Anywhere that concrete is conventionally used


WPE DK International

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

 


 

UHPC pavement for extreme heat and extreme cold

 

Asphalt road surfaces have very big problems when there are extreme summers with long-lasting very
high temperatures. The asphalt loses its bearing capacity the higher the ambient temperatures become, it becomes soft. In extreme cases it sticks to vehicle wheels and shoes. Accidents can occur because there is no longer any adhesion to the surface. Likewise, in extreme cases, people can no longer walk on these surfaces or roads are closed because of the risk of accidents.

Standard concrete road surfaces have problems in extreme cold. Cracks in the concrete and salt spreading to keep the roads passable destroy the concrete including reinforcement in the long run. Water penetrates the concrete cracks, freezes to ice, expands and cracks the concrete. De-icing salt penetrates the concrete cracks, the reinforcement corrodes, expands and blasts the concrete from the reinforcement. 

 

We will always find these extreme situations in many parts of the world in the future. The cost of maintaining transport infrastructure is immeasurable. It is impossible under the present conditions for road and bridge maintenance to carry out all the necessary repairs. In addition to the lack of financial budgets, many places also lack the staff to carry out this work.

UHPC Phalt semi-rigid overlays could be a durable solution for such extreme temperatures. This solution
combines the flexibility of asphalt with the very high load-bearing capacity and wear resistance of UHPC concrete. The standard asphalt is modified in its structure and serves as a matrix for the very fluid UHPC concrete. The UHPC Phalt slurry penetrates the asphalt matrix via the open-pored structure and fills it completely. 

 

 

 

WPE DK International

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



 

Special technical sales training sessions for HPC and UHPC markets and related products

In the last quarter of this year, we are almost fully booked with our technical sales training sessions (by no means to be confused with a presentation). 

 

These very specific training sessions focus entirely on the local market of our participants and the related HPC and UHPC materials. For this reason, only one country is admitted per training session. There are still training sessions booked this year by companies from Poland, Switzerland, Italy and South Korea. We do not charge our clients for the training. Therefore, only travel costs are incurred for our customers.


The joint preparation for the training usually takes about  4 weeks.
 

In the coming year, our new mobile training unit for practical processing training will start its service and can be booked by our customers worldwide. Here, all types of mixing and processing with all HPC and UHPC can be carried out practically.


WPE DK International

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

High temperature resistant UHPC pavement

Constant very high temperatures and high
loads cause high damage to stone or concrete
floors.
Last year we re-lined a floor in the steel collis
warehouse with UHPC HT. The freshly rolled
steel collis have an average weight of 20 tons
and are still more than 280°C / 536°F warm
for a few days when they are stored. The
radiant heat has caused massive damage to
the floor area in most areas of the hall. In
addition, the hot collis are driven from the
rolling mill into the warehouse with special
forklifts and placed correctly.

The routes in the warehouse had to be
completely renovated for safety reasons.
Since the ground was so bumpy, there was
a risk that a forklift with the hot colli might
fall over.

For this reason, the old floor was completely
removed. The subbase floor was rebuilt and
carefully compacted. Subsequently, at least
50 mm /2 inch thick UHPC HT high temperature
resistant flooring, which also has a very high
compressive strength and wear resistance, was laid.
In the UHPC HT floor covering, two-layer
reinforcement was introduced in order to absorb
the shear stresses that are generated by the heavy
forklift movements.
We relined approx. 1000 sqm hall floor. 


WPE DK International

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

 

 




Intercor our partner in Switzerland, Poland and Austria

Intercor, Schweiz

The company Intercor with its owner Gordon Viol is a partner for Switzerland, Germany and Austria we have been working with for a very long time. Intercor AG is a specialist in HPC and UHPC security (safe construction and military), UHPC Phalt and UHPC TopLayer materials.

Gordon is also supplier of us for some of our raw materials. He is owner of mineral mines in the southern part of Africa.
 

Security and Military
Contact:
Intercor AG
Untermüli 11
6302 Zug
Switzerland

Tel: +41 76 428 79 77
www.intercor.ch

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

 

UHPC Phalt a semi rigid top layer for all areas of an airport

Our nanotechnology for UHPC binder is now
over 30 years old and has been used in a wide
variety of areas worldwide.

From the beginning, the idea was to create a
material combination that combines the best
material properties of both products in an ideal
and flexible manner.
We call this combination material UHPC-Phalt.

The technique is simply, lay a coarse-grained,
porous, locally produced standard asphalt and fill
the pores with an extremely liquid UHPC concrete.

The result is that a flexible, temperature-resistant, 
high-pressure-resistant and extremely resilient, 
frost and de-icing salt-resistant, long-lasting
runway surface is created.

Benefit:
High axle loads, extreme ambient temperatures,
limited construction time and
constrained budgeting.

Standard laying machines and mixing machines
can be used for processing. Asphalt assembly
companies can easily lay this combination of
such materials

Local asphalt qualities can easily be used for
processing.
Fine sand or desert sand can be used for the
UHPC concrete.

Our UHPC binder can be flexibly adapted to
customer requirements. Curing speeds can be
adapted to customer requirements so that the
laying speeds of the laying machines can be
used to the maximum.



WPE DK International

Phone: 0049 176 601 73146
E-mail: info@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



 


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

UHPC design for Gas, Hydrogen and E- loading station

Gas, Hydrogen and E-loading stations should get a UHPC concrete design. Every future energy filling station design should be unique.

We want to get away from the standard unit sheet design. The idea is to create bold, curved, interesting roof structures, possibly greened and provided with solar panels made from our UHPC concrete. 

No armada of petrol pumps, which you will not need in the future,
but a few dispensers in combination with e-charging stations, for cars, trucks, motorcycles and e-bikes. The petrol pumps / charging stations are to get a design from historical to futuristic. In addition to a bar, would be possible, for example, a sports bar or snack bar after American Hard Rock Style or French Bisto. No supermarket where you can
chance to refuel. In addition to the bar, a workshop should be connected for special vehicle types, perhaps historic vehicle types. No mass repair, the vehicle owner may be present during the repair and possibly see from the sports bar howhis vehicle is being repaired.


Our UHPC team will create a gas stationthat is not a fast transit station, but a place to stay and meet, built with the utmost sustainability.

The first specifications are about to be completed, some architects have alreadysent their ideas and the first interested parties and investors have invited us to talks.


The gas station of today, is a dying system, which will not survive. In a very short time, there will be fewer and fewer gasoline powered vehicles in many countries. The new vehicle types will be powered by electricity or hydrogen. The gasoline powered vehicles will then be more and more vehicles, which one will call historical vehicles. These historic vehicles will, as they always do today, have their fans and drive on the streets.





UHPC Binder systems development for customer

Experience and Know how - Everything from one source
We develop new innovative UHPC binder systems for a wide range of requirements for our customers. These materials developments incorporate more than twenty years of worldwide experience in the development, production and application of UHPC materials.
We have developed, produced and applied UHPC products for architecture, design, facades, offshore, anti-corrosion, wear protection, flooring, power plants, steel mills, mining, shipping, military, engineering, airports, port facilities, etc.

You would like to have your own UHPC binder production?
We advise and assist you
  • In the design of the production plant
  • Raw material evaluation of local raw materials
  • Research and selection of alternative raw materials
  • Assistance with the procurement of production facilities
  • Production preparation and production start
  • Accompaniment of local production by our specialists
  • Training of local staff through workshops
  • Introduction of a material and quality inspection

We develop according to your requirement specification for you

  • UHPC binder systems for use as mortar, casting compound, shotcrete products
  • UHPC binder systems for continuous temperatures up to 1200°C
  • UHPC binder systems with fast-curing properties
  • UHPC binding systems as lightweight concrete
  • UHPC binder systems, impermeable to water and underwater applications
We produce for you according to your recipe your UHPC quality as ready mix in standard paper bags, plastic containers, bigbags or silo trucks in any quantity you want.

We can be your development partner
You have innovative, extraordinary UHPC material, product or application ideas and are looking for a development partner. Please contact us at any time. With your ideas and our experience, interesting future-oriented products should be created for you.

Fast - Faster - UHPC Rapid for new installation and repair

For very fast assembly in the taxiway of an airport
we have delivered a special UHPC (Ultra high
Performance Concrete) Cast.

Last Airport project:
There had to be laid cable protection pipes in the
area of ​​the taxiway. For this purpose, a slot of
20cm / 7,87in wide, 100cm / 39,37in deep and
100meters /109yd long in the existing concrete
floor had to be milled. For the filling of the slot
after the cable protection pipes had been laid,
we delivered a quick-hardening UHPC Rapid
Cast. The setting time of this special UHPC
is 2-3 hours, depending on the environmental
conditions. After this time it reaches a strength
above 20 MPa / 2900 psi. The final strength
after 48 hours is about 80 - 100 MPa /
1160 - 14500 psi.


Originally the UHPC Rapid product series
was developed about 20 years ago for wear
protection repairs in steel plants, power plants,
mining plants and cement plants.
Later, the UHPC Rapid was used not only as
a mortar but also as a cast and shotcrete. The
UHPC Rapid shotcrete was particularly used
in mining tunnels and the UHPC Rapid Cast
was used in the new lining and repair of
roadways, roads, storage areas and industrial
floors.

Meanwhile, it is also used as repair material
in airports, on highways and bridges.



UHPC flooring system for residential housing, parking decks and concrete repair

The UHPC is known in the industry as extreme
wear-resistant flooring for more than 25 years.

Recently, UHPC floor coverings are increasingly
being used in residential housing projects. One
of the many advantages over traditional floor
coverings is that the UHPC floor covering is
absolutely watertight from a layer thickness of
8 mm. UHPC floor coverings can be processed
just like normal cement screed. In  addition to
the above-mentioned waterproofness, UHPC
flooring coverings also have a very high
compressive strength.

UHPC floor coverings are ideal partners for all
kind underfloor heating systems.
The fast strength development, with more than

70% of the nominal strength achieved after 48
hours in the normal quality, makes it an
interesting floor covering for a variety of
applications.

If repairs are carried out in damp basements or
damp existing floors, UHPC flooring can be
installed directly on the damp surface.

UHPC flooring is also an outstandingly extremely
durable corrosion protection for everything that
is cast in this material, such as reinforcements
and for that already a few millimeters cover is
sufficient.

If UHPC concrete is used, expensive electrical
corrosion protection systems or corrosion
protection coatings are unnecessary.


Wine and UHPC - How does it work?


We were approached by an architects office if we could imagine working on a redevelopment project. In this case, it is about the renovation of a very old wine cellar. 
The cellar floor in particular is in need of refurbishment, plus a few storage foundations for large wine barrels. In some places, the floor has, among other things, moisture damage. We could make the floor permanently watertight with a few millimeters of UHPC. The new flooring should be as bright as possible and have a specific structure, which is also possible with UHPC. 
The old cellar vault also needs to be renovated in some places and the architects wants to give a very large room for wine tasting a new design. First models with UHPC / old wood combinations will be executed by us in the near future. As wooden material we use, among other things, old grapevines.

The jungle of short names for high strength concrete

I would like to try to clarify the jungle of
short names of high strength concrete
 names in the literature. The reason for
this is, that I have once again read a technical
master thesis from the field of civil
construction of a European university and
where only with short descriptions is
thrown around.

The first high-strength cement binder with a
compressive strength of well over 100 MPa
was developed in Denmark more than 30 years
ago. The aim of the development was to
produce a high-strength cement binder, which
was also very successful. At that time, the
focus was on the binder and not on possible
aggregates or reinforcement systems. For this
reason, an extremely high-strength binder was
always used in all the discussions.
Much later, to the dismay of many, the term
UHPC appeared in the literature. In our opinion,
this term UHPC cannot be clearly defined. It
also seems to be a fad to further water down this
term and everyone who thinks he has understood
ultra high-strength concrete creates his own short
form.


I would like to list the short forms here and provide
appropriate comments.

The UHPC binder is made of a special grade of 
cement, microsilica and superplasticizer.

UHPC    Ultra High Performance Concrete

Consists of UHPC binder + aggregates, which
can have different material grades and grain sizes
There are no standards which additives and surcharges of
which material quality and grain size must be used.

HPC    High Performance Concrete

Consists of cement + aggregates + additives
There are no standards which additives and surcharges of 
which material quality and grain size must be used. Likewise, 
there are no standards about the technical properties.

RHPC    Reinforced High Performance Concrete

Consists of cement + aggregates + additives and
unspecified reinforcement
There are no standards which additives and surcharges of 
which material quality and grain size must be used. Likewise, 
there are no standards about the technical properties. There
is no specification for material quality, dimensions and 
quantities for the reinforcement

HRUHPC    Heavy Reinforced Ultra High Performance Concrete

Consists of UHPC binder + aggregates, which
can have different material qualities and grain
sizes, and an unspecified reinforcement
There are no standards which additives and surcharges of 
which material quality and grain size must be used. 
Likewise, there are no standards about the technical 
properties. There is no specification for material quality, 
dimensions and quantities for the reinforcement

SFRC    Steel Fiber Reinforced Concrete

Consists of cement + aggregates + additives +
steel fibers
There are no standards which additives and surcharges of 
which material quality and grain size must be used. Likewise, 
there are no standards about the technical properties. For the 
fibers there is no specification of material quality, dimensions
and quantities.

RPC    Reactive Power Concrete

Consists of cement + sand + quarz powder, 
silica fume, steel fiber and superplasticizer
There is no standards of the quality of cement, sand 
silica fume must be used.


Anyone, university, technical literature or expert, will
take part in this Babylonian jumble without bothering
to really specify UHPC. At the moment many talk
about many things, but only a few about the same.

In my opinion, there should be only one UHPC binder
quality with one name and what is admixed to like
aggregates, fiber, reinforcements and much more is up
to the user. The UHPC binder manufacturer should only
manufacture according to the UHPC binder specification.

If one agreed internationally on a technical specification,
there would be very few UHPC producers from that day
on and many would have to name their products
differently or dramatically improve their material quality.


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