US Army Corps of Engineers
Headquarters

3-D printing a building
A print head from the Automated Construction of Expeditionary Structures, a 3-D printer, applies a layer of concrete with aggregate to a wall section of a barracks hut at the Construction Engineering Research Laboratory in Champaign, Illinois.

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Photo by: Mike Jazdyk |  VIRIN: 170601-A-MV376-907.JPG