A 3D-printed bridge that can change the future

Presented at the Venice Architecture Biennale’s Time, Space, Existence exhibition, the Diamanti Project was designed and conceived by Professor Dr. Masoud Akbarzadeh and the Polyhedral Structures Laboratory at the University of Pennsylvania. 

The 10-meter-long prototype showcased a new design approach that prioritizes reversibility, material efficiency, and environmental responsibility. The bridge consists of nine interlocking concrete modules, each robotically 3D-printed using a specialized low-carbon mix developed by Sika Group. 

Connected using ungrouted steel post-tensioning cables, without adhesives, these segments can be completely disassembled and reused, reducing material consumption by 95% and steel reinforcement by 60%.

The Diamanti Bridge uses funicular geometry, derived from polyhedral graphic statics. This design channels forces through natural paths of compression and tension, enabling high load-bearing capacity with minimal material use.

The concrete mix incorporates diatomaceous earth, a mineral that boosts carbon dioxide absorption by up to 142% compared to conventional blends. Combined with hollow anticlastic surfaces that reduce volume while increasing stiffness, the bridge uses 60% less concrete and 81% less steel than traditional counterparts.

The Diamanti Bridge emerges as a symbol of innovation, design, fabrication, and sustainability, setting a new standard for sustainable urban infrastructure. 

Sources: Parametric Architecture, Design Boom, Hube, Vertico

Image credit: Vertico, Fortes.vision, courtesy of Massive Form

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