World's longest 3D-printed concrete bridge opens in Shanghai  -
World's longest 3D-printed concrete bridge opens in Shanghai - 28 Nov 2019

The single-arched bridge was constructed from 176 concrete units that were printed using two robotic-arm 3D-printing systems. All of the components were printed within 450 hours.

The bridge's structure comprises 44 hollow units, while the deck is constructed from 68 pavement units made in "the form of brain corals" filled with white pebbles, and the handrails are made from a further 64 pieces. All the components are printed using a composite of polyethylene fibre concrete and admixtures. More