A robot that builds roads is being tested by the construction industry. Invented by US boffins, it works 24 hours a day, never stopping for tea breaks. All it needs is electricity and concrete.
Auto Express Car Reviews
23rd March 2004
The device hangs from a mobile overhead gantry, while concrete pours out of the movable nozzle. This is then flattened by two computer-linked trowels.
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