Showing posts with label civilengineers. Show all posts
Showing posts with label civilengineers. Show all posts

UHPC concrete for new precast bridge construction or bridge repair

For more than 25 years, UHPC Ultra High Performance concrete has been used for the construction and repair of concrete bridges worldwide. The mechanical and durability
properties are absolutely ideal for modern bridge construction.

WPE DK UHPC concrete is used in the production of precast concrete parts and for on-site assembly. With UHPC concrete, very slim and high load-bearing elements can be manufactured quickly, cost effectively and very precisely. All of our UHPC material qualities can be processed with most types of concrete mixer.

Our UHPC bridge material qualities are usually mixed with a water / cement ratio of less than 0.25 and a proportion of steel fibers. Compressive strengths of 150 MPa / 21800 psi to over 230 MPa / 33400 psi are achieved in our standard quality.

Our UHPC material properties meet all required technical data, including in the USA from the responsible DOTs. All of our UHPC material qualities are subject to a permanent quality check of the raw materials used, finished products and processing on site on the construction site.

We use our UHPC castable materials for joint fill solutions or connection of precast bridge elements. With UHPC castable you can minimizse the connection joints.

We manufacture UHPC mortar, UHPC Castable, UHPC Shotcrete and UHPC Rapid material qualities for bridge construction. At the customer's request, we also develop and manufacture special qualities.

UHPC mortar, UHPC Shotcrete and UHPC Rapid are mainly used for repairs. No extensive preparatory work is necessary for repairs with our UHPC materials. After less than 48 hours, our standard materials reach more than 70% of their maximum strength. UHPC is waterproof from a layer thickness of 5 mm.

We use our UHPC TopLayer or UHPC Phalt material qualities for bridge decks. In Europe we use UHPC TopLayer for new wood bridge construction. All UHPC can be mixed on site and processed quickly and inexpensively with standard processing machines.

The mixing is very simple. You mix 1 part UHPC Binder with 1 part aggregates and clear water, that is all. Everybody can mix it. No additional addives are necessary.

 

 

WPE DK International

Phone: 0049 1514 6318334
E-mail: info@wpe-dk.dk
Homepage: www.wpe-dk.com



Sand for civil construction is running out in many places of the world - Solution UHPC Desert Sand Binder + Nature Desert sand

Sand consumption today

In more and more parts of the world, the availability of sand is becoming increasingly difficult or even impossible for the construction industry.
Gigantic sales are now being made with sand.
Millions of tons of sand are transported to the oceans each year, and demand will continue to rise.

Example
  • Over 47 billion tons of sand are mined annually
  • For a standard house you need approx. 200 to of sand
  • For 1 kilometre highway you need approx. 30000 to of sand
  • Global sand business is 70 billion US Dollar/year



Types of sand extraction

  • Sand mines
  • Sand from rivers
  • Beach Sand
  • Sand mining in coastal area

 

 

WPE DK is manufacturer of UHPC Desert Sand Binder for more than 10 years. This binder system is mixed only with desert sand and a little water. Now there is the 3rd development stage of UHPC Desert Sand binder. This new generation differs significantly from the 1st generation in strength, workability, sustainability and much lower CO2 footprint. The latest generation can also be produced on site with local raw materials without any problems. 

For us as WPE DK, the sustainable future has begun with desert sand.

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










hhbc-consulting and WPE DK service for HPC and UHPC material handling


We would like to share our more than 25 years of experience
in development, production and application in more than one
hundred industries worldwide. We would like to accompany
our customers in our journey in the future development of
HPC and UHPC binder and concrete.
That's why we've developed this customer service organization with our most experienced staff and international partners.
 
We offer the full range of services to all interested parties. Country of event: Germany
The majority of our service offer can also take place on the premises of the respective interested parties by prior arrangement, provided that they have the appropriate premises.
 
We offer this service for our following HPC and UHPC
HPC      - C80 - C140                                       Mortar, Castable, Shotcrete
UHPC   - C150 - C240                                     Mortar, Castable, Shotcrete
UHPC   - Phalt                                                 Semi rigid overlay system
UHPC   - TopLayer                                          Concrete industrial floorings
UHPC   - Security                                             Military and Security
UHPC   - Offshore                                            Offshore Grouting
UHPC   - Wear Protection                                Mortar, Castable, Shotcrete
UHPC   - Leight Weight, insulation                 Mortar, Castable, Shotcrete
UHPC   - HT Hight Temperature resistant       Mortar, Castable, Shotcrete


  • HPC and UHPC Material Laboratory Service
    Reseach and Development
    Research of new raw material
    Documentation of the raw material
    Purchasing of raw materials

  • HPC and UHPC Installations Service
    Supervisor
    Installation documentation
    Testing the customer processing machines for suitability for UHPC material
  • HPC and UHPC Workshop Training Service
    Practical training of a castomer installation team
    Training of a Supervisor
    Training of the inhouse technican
    Training of the sales teams

  • Training of Instructors Service
    Practical and theoretical training of the customer instructor

  • Workshop Repair Service
    Documentation of repair methodes

  • Engineering Service
    Construction of a mixing plant
    Construction of a UHPC production
    Project consulting
    Technical documentation incl. drawings
    Quality control
     
    Appointments in our workshop or at interested parties as well as the scheduling are coordinated by us after a discussion with the interested parties according to their needs.
    If you are interested, please contact us via: service@hhbc-consulting.de

Protection of river banks and bridges with UHPC technology

At a meeting of local councils in the alpine
region, hhbc-consulting and WPE DK were
invited as guests to discuss possible
rehabilitation and protection of river banks
and bridges. Due to climate change, especially 
in the mountainous regions, the streams and 
rivers are flooded with enormous amounts 
of water as a result of enormous amounts of 
rain and continuous snow melt. In addition 
to the water flowing at high speed, ever 
greater quantities of debris are also being 
transported. Water and debris are increasingly 
damaging bank and bridge structures. For the 
most part, they are not designed for these 
quantities.

One of the main points of this discussion,
was the rehabilitation of the massive damage
caused by scree and water masses on the
construction of the riverbanks, especially in
areas of river diversion and river guidance
in villages and towns.

Particularly the rising water masses among
other things by massive lasting rains and
resulting high flow velocities with scree
movements give rise to concern.

As one of the possible solutions for the future,
the use of UHPC Ultra High Performance
Concrete as a refurbishment material and as
construction material for renewed protective
installation was discussed.

UHPC concrete would offer concrete with its
extreme strength (over 140 MPa - 240 MPa),
very high wear resistance and extremely high
corrosion resistance.

In addition, a joint-free processing is possible.
Due to these characteristics, the design of river
banks and river diversions with artificial rock
constructions made of UHPC was discussed.
As assembly methods for UHPC, assembly
pre-fabricated elements, casting or spray-on-site
(Shotcrete) assembly was discussed.
Since UHPC develop within 48 hours 70% of its
nominal strength are very fast in assembly methods
and thus the repair time is very short.

Due to the many years of experience we have in
offshore and coastal areas, first projects have
been agreed.

UHPC perfect construction and filling material for bank vaults and strong rooms

There are still many manufacturers claiming 
their moveable safes are absolutely 
burglar-proof, that's wrong.
Everyone and I mean it really every moveable
safe can be opened with the right tools and 
enough time. There is nothing absolutely safe. 
Depending on the security level of the vault, 
burglars may require a short or a lot of time 
to open the vault and may require special 
tools.

 

The simple safe is usually made of sheet steel.
The steel of the safe construction may have 
different wall thicknesses depending on the 
manufacturer and it can also be used depending 
on the manufacturer not only one sheet but 
several layers of different steel grades.

An increase in safety is a sheet metal wall 
construction that can be filled with standard 
concrete, for example.

A further increase in safety is the backfilling 
of a safe construction in conjunction with a 
special reinforcement, which can vary from 
safe vault to vault manufacturer. Everyone 
has their special technique.

Likewise, the sheet metal construction can be 
filled with pre-casted concrete slabs of varying 
thickness and quality

Large safes such as bank safes are shed locally. 
With this type of vault there is no sheet metal 
construction, here a modern formwork technique 
is used.The wall thicknesses of such constructions 
can be several meters. In this formwork, a very 
complex and special reinforcement system is used.

In addition to the pure mechanical burglary problem
also a security against fire is required.

For high temperatures, suitable thermal insulating 
materials or, in the simplest case, air gaps in the 
wall construction are generally used to protect 
documents, pictures, jewlery, money, etc. in the 
safe construction.


UHPC Ultra High Performance Concrete

UHPC cast binders are extremely fine, have 
exceptional flow properties and are self-compacting, 
allowing much more effective reinforcement systems 
to be used compared to standard cement binders.
Our UHPC safety binders achieve compressive 
strengths of 150 - 250 MPa / 22000 - 36000 psi.

Decades of experience in wear and security
technology make our UHPC concrete systems
extremely wear resistant and very resistant to
impact. By mixing in additional aggregates, a
very resistant cast concrete with a 
multitude of burglary-resistant properties can be 
produced.

If a very high temperature resistance is required, we 
can withstand with our HT high temperature resistant 
UHPC cast binder system temperatures up to 
1200°C / 2192°F permanently. The strength values of 
the UHPC cast binder are only slightly reduced.

In large safes for banks, for example, UHPC cast 
binder offers not only high safety features, but also 
very good flow and pumping properties. The setting 
temperature of our UHPC cast products is much 
lower than for standard heavy concrete.

UHPC security panels as pre-cast panel elements 
for ATMs, server rooms, security rooms, these 
panels can be produced quickly and with great 
precision. Depending on the required safety standard, 
the panels can withstand mechanical loads or thermal 
loads or a combination of both loads. Here, the 
subsequent installation in existing houses, apartments, 
offices, etc., the mechanical loads, size of the rooms, 
as well as a weight optimization of the room design 
can be considered.

For hurricane, wild fire and flood-proof constructions 
in the interior and exterior, UHPC prefabricated 
elements allow a variety of design variations.

All our UHPC security and protection products are 
designed for private individuals as well as industry, 
military, banks, hospitals, server center, nuclear 
power plants, prison, etc.
 
 
WPE DK International

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

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