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3D Printing Concrete

Luai Kurdi experiments with 3d printing concrete by using parametric design and digital fabrication tools

Luai Kurdi is an architect and designer who is exploring and investing in parametric design and digital fabrication. The emergence of technologies such as 3D Printing has enabled him to combine both design and fabrication disciplines using a 6-axis robotic arm (Kuka) to 3D Print with Concrete.

Learn more about parametric and computational design from pioneers at the CD NEXT conference series:

3D Printing Concrete

Concrete has been used in the construction industry for thousands of years and today the hope is to bring this material closer to a world where design and geometrical complexity doesn’t impose a barrier for using this material to produce intricate designs.

By using Rhino 3d and Grasshopper 3d (parametric design software) Luai is able to design complex parametrically controlled geometry while at the same time producing print paths for the robotic arm to understand and execute.

3D Printing Concrete

The advantage of linking both design and fabrication into one platform eliminates the need to run through the process of designing and fabricating separately which in return saves time going through multiple iterations and fabrication processes.

3D Printing Concrete

Working as a technical lead at BESIX 3D; a 3D Concrete Printing Specialized division of BESIX, many experiments have been done both on the design, material, and process aspects. As traditional concrete is unsuitable for direct use in the 3D Printing process, newly developed concrete mixes had to be created in order to suit the function.

3D Printing Concrete

Concrete normally has a liquid-like behavior that prevents it from being used for 3D printing since it would be impossible to lay one layer on top of the other. With the newly developed mixes concrete has a viscosity that enables it to be used in 3D Concrete Printing.

After the parametric design and digital code generation for the robotic arm print paths, the robotic arm lays down the concrete one layer at a time, elevating it in the Z direction to fulfill an additive manufacturing process. Eventually, the layers stacked on top of each other create a 3-dimensional geometry made out of concrete.

3D Printing Concrete

This process is much faster in comparison to traditional fabrication methods and enables us to think creatively while being unrestricted to straight lines and design. In the images seen, the 2m column for example took around 2 hours to be fully printed.

3D Printing Concrete

In the architectural implementation, the goal is to reduce the amount of concrete used in buildings and be able only to use concrete was needed both structurally and architecturally. And with the reduction of the manpower involved in the process and on-site, high accuracy and error-free production is achieved.

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