The DDU collaborates with the Internationale Bauausstellung (IBA) Heidelberg in designing an urban vision for the Patrick Henry Village (PHV) near the historical city of Heidelberg. The 100-hectare area, used until 2013 by the US army, is to become a model for how future cities can house our knowledge-based society.

IBAs –  the International Building Exhibitions in Germany – are one of the most influential and innovative urban development instruments in Germany, going back to the beginning of the 20th century. We are very excited to be part of the upcoming IBA Heidelberg, focussing on „knowledge based urbanism“.

Our team at the Digital Design Unit (DDU)  develops a custom version of the game platform 20.000 Blocks — the IBA_GAME | 20.000 BLOCKS  — with the aim to involve the youngest citizens in envisioning the new PHV. Together with case studies conducted by the world-renowned offices of MVRDV, Carlo Ratti Associatti, ASTOCRamboll Liveable Cities Lab and Bohn&Viljoen our contribution will inspire the urban vision by KCAP for the area of this new neighbourhood of Heidelberg.

The game IBA_GAME | 20.000 BLOCKS is made possible by the kind support of Eternit.

Project leader:
Anton Savov

Ben Buckton
Jörg Hartmann
Thomas Valentin Klink
Sebastian Kotterer
Marios Messios
Lorena Müller
Max Rudolph
Alban Voss

Project website:

Client: IBA Heidelberg GmbH
Main Sponsor: Eternit


barBeton is a bar counter made from ultra high performance concrete (UHPC). The object was a research project which explored the potential of the new material in combination with novel moulding techniques. The research was conducted by Mirco Becker and Oliver Tessmann together with students from the University of Kassel and G.tecz as industry partner for innovative concrete.

For the project, G.tecz  developed two different types of the concrete; a low viscosity
concrete called QUANTZ, providing extreme fluidity during manufacture and compressive
strength properties comparable to steel and a surface quality like ceramics, as well as
a stiff but ductile and easy to handle UHPC that could be used with a laminating technique.
the project aimed to reduce the material thickness.


The team created a mould made from two interlocking shells of milled foam covered
with epoxy resin after extensive testing of . Resin proved to be an adequate coating for the foam mould allowing for multiple use of the formwork and providing the desired surface quality.


The barbeton surface is extremely glossy without any further treatment or additional coating. The easy handling of the material in combination with the layering technique allows to produce double curved
lightweight UHPC structures in an effective way.


‘barbeton’ was on display at the recent materialxperience fair in utrecht, netherlands.

Project Team:

Mirco Becker, Oliver Tessmann

Jan Iwanowicz, Ljuba Tascheva, Patrick Taylor, Jan Weissenfeldt, Max Wittich, Babak Zarsazegar


Thomas Teichmann, Gregor Zimmermann