Shanghai is now home to the world's longest 3D-printed concrete pedestrian bridge. The 86-foot-long bridge is just under 12 feet thick and features a single arch with ribbon-like handrails. 44 hollow concrete units were printed from composite materials containing polyethylene fiber concrete; the handrails required 68. Two robotic arms completed the parts over the course of 450 hours.
The streamlined process is estimated to have produced savings of 33% when compared to a more conventional construction process – attributed mainly to the elimination of templates and reinforcing bars.Read More