A try to replicate clay with UHPC

We had a lot of fun developing our UHPC binder for historical applications. Of course, we do not just sit in the lab and develop recipes, we try the recipes for the lime plaster and of course stucco practically.

Since most of us are not talented, we invited an expert. After about a day our workshop looked like we were renovating it and just like the workshop some of the team members had to undergo general cleaning.

The final goal was to recreate clay with UHPC. Clay is a fantastic natural material. Actually, UHPC does not copy it, but it was a lot of fun for everyone to try.

Here is a general short form of what we have achieved and what not:

• We have developed a UHPC binder that can be mixed with extremely fine sand to a clay-like consistency
• We need only a few water for all processing steps
• We do not need a furnace for strength development
• We can set the processing time and hardening time during the production of the binder as desired.
• The UHPC binder must be mixed with water in a compulsory mixer.
• The UHPC binder can be mixed as casting compound or clay-like solid.
• The UHPC binder can be made in different colors.

We had the material processed by a potter. His verdict was that if we worked on some set screws in the recipe, we would produce an interesting material. We did not expect a better judgment. Our goal was to get the sound as close as possible in consistency and workmanship. I would say we are not that bad.

 

 

WPE DK International

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

Rehabilitation and restoration of historic constructions with UHPC - part 1

Obtaining historical constructions is an 

important task. Much has already been 
lost through time and war, few of which 
are important to obtain.

we could not produce original materials 
from different time periods, so we can 
not fulfill this part of the restoration of 
historical constructions.

But with UHPC Ultra High Performance 
Concrete, we are able to offer solutions 
to a wide range of problems in conserving, 
reconstructing and restoring historical 
constructions.

UHPC has many advantages for use

• It can look exactly like limestone, 
  sandstone or granite
• it can be just as hard as limestone, 
  sandstone or granite
• It can be made as stones in any 
  measure like limestone, sandstone or 
  granite
• It can take over any stone surface of 
  limestone, sandstone or granite
• It can copy extremely accurate copies 
  including traces of use in all the finer 
  points of limestone, sandstone or granite
• It can be made as a casting material or 
  as a mortar and processed as traditional 
  casting and mortar mass for limestone, 
  sandstone or granite
• It can be machined with traditional tools 
  depending on the desired hardness.
• It can have almost the same consistency 
  as plaster and can be processed as well. 
  For extremely high whiteness we added 
  Aalborg White cement to our UHPC binder, 
  the cement grade with the highest degree 
  of whiteness.
• UHPC can add ductility to modern plastic 
  or ceramic fibers, so the great strength 
  of the material movements of old buildings 
  can certainly go along without the cracks 
  becoming visible.
• UHPC is impermeable to water from an 
  average layer thickness of 10 mm.
• UHPC can also be processed under water 
  as cast or mortar
• However, it is extremely resistant to all 
  types of environmental influences
• It is extremely resistant to frost and de-icing 
  salt
• Wood and steel can be cast in UHPC, 
  re-stabilized, restored to their original 
  carrying capacity, and given very high 
  corrosion resistance for many decades

UHPC is not magic material it is based on a 
particular nanotechnology and the right recipe 
for the right mix, for the right aggregates, for the 
right material quality.

With UHPC we can mix almost anything, old 
minerals, old textiles, old wood, old hemp, old 
pigments, old ground rock meal - just about 
everything.


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

Renovation of buildings and monuments whether new or antique with UHPC®

UHPC® materials have many advantages over
other materials in the rehabilitation of buildings
whether new or antique, historic or monuments.
The biggest advantage is probably its enormous
adaptability to the existing building fabric.

- UHPC® materials can improve the load
   bearing capacity or decide on a structural
   design that is under attack.

- UHPC® material can be applied thinly to
   protect the existing construction against all
   kinds of environmental influences over a
   very long period of time.

- Since UHPC® materials can be mixed very well
   with a variety of materials, whether new or
   antique, replicas can be created which have a
   higher resistance and bearing capacity than the
   original ones.

- Most natural stones and their structure could be
   copied with UHPC®. The copies can be given the
   structure by the casting mold or subsequently
   processed or polished like a natural stone.

- UHPC® materials that can achieve
   extremely fine and accurate structures can
   achieve absolutely identical replicas with a
   correspondingly high mold quality.

- Similarly, old facades can be repaired and
   completely replaced as a copy of the original 
   catch, but in a much thinner plate thickness
   than the originals so that there is still enough
   space for modern insulation in the most cases.

- Due to the very good flow properties, joints
   and cracks can be filled without extensive
   preparatory work.

- There is no need for special tools to use UHPC®
   material.

- UHPC® can use as mortar, cast or spray
   material.

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