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Published: 28 August 2014  
Related category(ies):
Science & business  |  Industrial research  |  International cooperation

 

Countries involved in the project described in the article:
Belgium  |  Czech Republic  |  Denmark  |  Germany  |  Spain  |  Sweden  |  Switzerland  |  Turkey
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Boring buildings be gone

A new process for concrete buildings has robots cutting mould shapes and bending the steel reinforcement. Self-compacting concrete fills the mould, giving smooth, organic-looking buildings, but without the usual cost. The technologies, developed by EU-funded researchers, are already on the market.

Photo of a concrete structure where the formwork has been fabricated on a robot installation

© Tailor Crete

Prefabricated concrete may be cheap and convenient, but comes with the hidden cost of dreary sameness. Until recently, one could have cheap buildings or interesting buildings – but usually not both.

The EU-funded project TailorCrete aimed to narrow the difference. TailorCrete set out to develop an industrial process for creating curved concrete shapes at low cost. That would mean structures of greater appeal. To do this, the project had to study robots, special kinds of concrete and new types of reinforcement. The consortium also aimed to create new design and production tools.

TailorCrete's four years of research yielded a new process. An architect starts by designing a structure using TailorCrete's 3D design tool. Normal concrete uses moulds of styrofoam or plywood, called formwork, which results in the familiar blocky shapes.

The TailorCrete process still uses formwork, but the surface is instead cut with an on-site industrial robot. This method enables intricate shapes and smooth textures. After the formwork is cut, the robot then bends steel reinforcing to fit the available space, according to the digital design. The robots make the new process affordable and relatively simple.

Tailored concrete

Not just any concrete would go into the formwork space. "A special self-compacting concrete would first be designed, by adjusting the mix of ingredients to get the best flow properties," says Dr Mette Glavind, Vice President of the Danish Technological Institute, and project leader.

Normal concrete might not fill the space completely, leaving voids. However, self-compacting concrete's greater fluidity means it automatically fills any given space, without needing an additional process. "Furthermore, it makes it possible to cast complicated formwork and geometry, helping to express the architect's vision," says Glavind.

While TailorCrete didn't invent self-compacting concrete, it did develop all other system components. The project's main achievements include three types of formwork. One, suitable for low-medium curvature slabs, has been demonstrated at full scale and is now commercially available. The other types, both suitable for any curvature, have either been demonstrated in prototype or are ready for market.

TailorCrete's robotic fabrication process for bending and securing the reinforcement has been demonstrated at full scale, and the project is working to establish a spin-off company. The consortium can also take credit for developing software design tools covering all elements of design, including architecture, formwork and reinforcement. Testing the fully functional prototypes is almost complete.

All the project's component achievements have been drawn together in a final demonstrator – a futuristic structure in Denmark, to be completed in March 2014.

The next phase for TailorCrete will involve taking the mature technologies to the market. Individual project partners will be responsible for marketing specific technologies. Additionally, Spanish contracting company Dragados will be using the TailorCrete integrated system to create unique concrete structures.

"The financial crisis certainly didn't aid the implementation of new technology in the building and construction sector," says Glavind. "However, it seems that the market's improving. Thus our market potential is huge."

 

Project details

  • Project acronym: TAILORCRETE
  • Participants: Denmark (Coordinator),Turkey, Sweden, Switzerland, Czech Republic, Spain, Belgium, Germany
  • Project FP7 228663
  • Total costs: € 8 451 869
  • EU contribution: € 5 892 180
  • Duration: August 2009 - January 2014

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