About a year ago, Eindhoven University of Technology (TU/e) presented a giant 3D printer capable of printing concrete. Not so long ago, engineers used the ability of this unit by creating a concrete bridge for pedestrians and cyclists. To do this, Eindhoven University of Technology enlisted the support of the Dutch company BAM Infra.
The unique technology of construction of the bridge
TU/e not the first who printed the bridge by using additive technology. But at this University was used unique technology. So, a team of researchers and engineers under the leadership of Professor Theo Saleta, has developed a method of reinforcement of each layer of concrete special steel cables.
The result of 3D printing is impressive. Despite the fact that the process has just started, the bridge looks quite interesting. After all the work is over, the finished bridge will be installed in the Dutch village of Gemert.
The developers claim that the design is absolutely safe to use, as scientists tested a scale prototype of the bridge for several months. The bridge is placed goods weighing up to 2 thousand pounds. Ready models satisfied the requirements of the safe, so start a project to create a full-scale bridge.
The advantages of additive technology in the construction of road structures
Printable bridge is used ordinary concrete. Concrete mix classic design flows, having a liquid consistency. The material used same team of TU/e is more similar in consistency to mayonnaise on or toothpaste, so does not lose shape and does not spread. Its use eliminates the generation of waste, which is not only convenient, but also profitable from a financial point of view. Also the use of this consumable reduces carbon dioxide emissions into the atmosphere.
The use of three-dimensional printing has other advantages in comparison with traditional technologies. The first of them is freedom of design thought. The use of a 3D printer allows you to experiment with shapes and architecture.
Initially, the engineers will print a separate part of the bridge, then they will be combined into a single structure. According to preliminary data, the bridge will be ready in two months. It can be seen in the following video:
Wereldprimeur: eerste volledig constructief 3D-geprinte, voorgespannen betonnen fietsbrug ter wereld.Vrijdag 16 juni is het startsein gegeven voor het 3D-printen van ‘s werelds eerste volledig constructief voorgespannen, betonnen fietsbrug. Deze bijzondere fietsbrug is ontwikkeld door BAM Infra in samenwerking met de TU Eindhoven.