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

 

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

 

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


 

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 Supervisor projects worldwide

Today we completed our 100th Supervisor project

Since the first customer request more than 20 years ago, we have meanwhile completed projects with UHPC materials in more than 35 countries around the world. We looked after offshore, corrosion, wear protection, concrete rehabilitation, architecture, hydraulic engineering, road construction, etc.
On behalf of our customers, we have carried out assembly projects, trained fitters on site, carried out complete assemblies independently, assessed damage, worked out repair solutions, etc.
Our current project was the rehabilitation of 10 km of lanes at Europe's largest flower auctioneer.

Here some impressions of our worldwide jobs

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

UHPC Flooring systems for the heavy duty industry

For more than 25 years, UHPC TopLayer and 
UHPC Phalt materials have been produced and 
used worldwide in a wide variety of industrial sectors.
We do not see UHPC TopLayer or UHPC Phalt as an 
alternative to normal road or industrial floor coverings, 
UHPC material is used where these normal road 
coverings and pavements meet their load limits.

That can be at
- Extreme temperature stresses
- Very high point / pressure loads
- Very high wear and impact
- Chemical / corrosive attac
- Extreme environmental stress


UHPC TopLayer

UHPC TopLayer is a fiber reinforced UHPC concrete
product with a compressive strength of
125 MPa - 250 MPa or /17400 psi – 36250 psi
after a curing time of 24 hours.
The standard lining thickness is 25 – 50 mm or
1 inch - 2 inch

Advantages
- Fast development of compressive strength
- High wear and impact resistant
- High compressive strength
- Absolute frost and thaw resistant

- Impermeable to fluids but still vapor permeable
- Anticorrosive features
- Good bonding to sub-bases, aggregates and
   reinforcement
- High temperature resistant, in our UHPC HT
   version we can allow max. temperature of 1000°C/ 1830°F
- Jointless lining
- TopLayer surfaces require no sealing for
   industrial applications.
- Fast curing
- Sort repair stops

UHPC TopLayer can be processed and installed with standard road construction processing machines.


UHPC Phalt

Is a joint-free semi-rigid top layer. It combines the extremely
high compressive strength of UHPC Phalt mortar
with the flexibility of an asphalt.
UHPC Phalt system is produced by laying an asphalt
support frame with approx. 25 - 30% cavity content,
which is poured with UHPC Phalt binder.

UHPC Phalt can be processed and installed with standard road construction processing machines.

Advantages
- Extremely good combination of strength and flexibility
- Seamless coating for interior and exterior areas
- Compared to standard road and outer linings,
   extremely high load capacity and durability
- Temperature stable from -50°C/-58°F to +90°C/194°F

- High static loads possible
- No dust generation
- High resistance to frost and de-icing salt
- Very good chemical resistance
- Very good wear resistance
- Fast installation
- UHPC Phalt surfaces require no sealing

Applications
Mines – Roads
Desert - Roads
Chemical plants – Roads, Safety areas
Refineries – Roads, Safety areas
Roads on the water on dams, jetties and bridges
Specifically, for example, steelworks, vertical
starting jets launch pads, rocket launch pads,
heavy military vehicles, etc

Repair / maintenance
In principle, all concrete floor/pavement coverings
and road surfaces can be repaired in the shortest
possible time by using UHPC TopLayer or
UHPC Phalt.
Asphalt material can be reused as an aggregate for
UHPC TopLayer material or UHPC Phalt material.
Prior to re-use, a processing test should clarify which strength values are achieved by the re-used asphalt material. With UHPC Phalt, it is also possible to fill hollow spaces very well under the asphalt layer, which has been leached out, for example, by high water. UHPC Phalt is extremely fluid and penetrates intoall cavities and cleaves and fills them.

 

WPE DK International

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