New technology lets you 3D print a house for $1,800. Video with the construction process and the result

A partnership between a construction company and a supplier of industrial 3D printers resulted in a unique project: for the first time in history, a house was printed from real concrete on a 3D printer. The area of ​​this house is 190 square meters, and its construction took only five days. What is especially interesting, the cost of the finished house was only $1,800.

3D printing and its application in various industries, including metallurgy, is not new for a long time. However, when it comes to construction, the special “ink” used, which is a dry mixture of building materials, significantly limits the application of the technology and leads to an increase in construction costs.

However, the Mexican company CEMEX, which supplies materials for the construction of buildings, together with the Danish supplier of 3D printing technologies COBOD, solved this problem. They have developed a technology that allows the use of a conventional cement mixture in 3D printing of houses, while reducing the proportion of special building inks to 1%.

Previous attempts to create 3D concrete structures have used special mixes to speed up the drying of standard concrete during the construction process. This was a major hurdle as wet concrete does not have the same bearing capacity as dry concrete and does not support the structure.

The solution to the problem proposed by CEMEX and COBOD is a new cement mixture called D.fab, which contains special additives that allow the concrete to be poured during printing and speed up the curing process.

An additional benefit is a significant reduction in construction costs. If dry mix is ​​used for 3D printing, the cost is between $791 and $1,018 per cubic meter of build, while using D.fab mix can bring that cost down to $67-$101 for the same volume. In addition, the time required for construction is reduced, which also leads to additional economic benefits.

The team showcased their technology by building a 190 square meter home in Oman’s capital, Muscat. D.fab components were shipped from Europe and the house itself was 3D printed in two steps. During the first phase, the local team was trained on the printing process, and then they completed the second phase of printing themselves.

The entire project was completed in just 5 days, with a reduction in material cost of $1,800 compared to $22,600 with conventional 3D printing dry mixes.

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New technology lets you 3D print a house for $1,800. Video with the construction process and the result
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