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3D-printed concrete bridge unveiled in Tianjin 世界首座3D打印赵州桥在天津落成
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The original Zhaozhou Bridge
Around half the size of the Zhaozhou Bridge, the world's oldest open-spandrel segmental stone arch bridge, the 3D-printed structure was created by a research team led by Professor Ma Guowei from the Hebei University of Technology.
The new bridge, around 28.1 meters long, was formed by 3D-printed concrete and was installed on the university's campus.
"We used special concrete materials and a self-developed 3D printing device. Compared with traditional engineering, 3D concrete printing technology can save around one-third of construction materials and two thirds of human labor," Ma said.
He said the technology can also be applied in ancient building protection and restoration.
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