The World’s largest 3D printed real concrete building made by GUtech university in Muscat, Oman – 3D printed with super low cost D.fab concrete solution developed in cooperation between CEMEX and COBOD 

For many years, Dubai, which implemented a policy of having 25% of all new buildings 3D printed within 2030, has held the pole position for 3D construction printing, but that position is now challenged by Oman – printing the world’s largest 3D printed real concrete building in Oman with a super low cost of the printed materials.

The German University of Technology in Oman, GUtech on Tuesday, December 14, 2021, celebrated the finishing of the 3D printing of the walls of the so far largest 3D printed building in the world made with a real concrete. The importance of the event was marked by the presence of His Excellency Sultan Al-Habsi, Minister of Finance of Oman together with more than 200 guests including several ministers and VIPs of Oman, who attended the event in Muscat, the capital of Oman.

The house consists of 190 m2 (2,100 SF) and is typical for a social housing unit in Oman. It has 3 bedrooms, three bathrooms, a living room, kitchen, and guest reception area. The house was printed in two stages. While the materials recipe was adjusted and training of the Omani crew took place during the printing of the first part of the house, the second part of the house was done by the Omani crew on their own and it only took five days to complete. A sign of fast learning and productivity improvements occurring in 3D printed projects. 

Dr. Hussain, Acting Rector of GUtech said “Today’s display of the first 3D printed building is perhaps the first step in the 1,000-mile journey. A step that will not be success without the support of all parties involved. In this regard, I sincerely thank all the local and international parties who contribute to supporting the center and the University. We hope that this center will play its part in supporting Oman’s efforts to achieve Oman’s Vision 2040.” 

While the Middle East have seen numerous 3D printed buildings, the 190 m2 (2,100 SF) building in Oman is the first to be printed with a real concrete instead of the traditional dry mix mortars used in most other 3D printed buildings. To make the concrete 3D printable, GUtech applied the D.fab solution developed by COBOD and CEMEX in cooperation where the concrete can have particle sizes up to 10 mm (1/3 inch) and is made from locally available cement, sand, and gravel. CEMEX and COBOD launched the news about the D.fab solution last week in connection with the first 3D printed building in Angola. The D.fab solution was also used in Angola with the result that the cost of the concrete materials was less than 1,000 USD for the 52 m2 (575 SF) house. 

On that occasion Juan Romero, Executive Vice President Sustainability, Commercial, and Operations Development of CEMEX said: “The introduction of this revolutionary 3D printing system is a testament to our customer-centric mindset and relentless focus on continuous innovation and improvement. Working together with COBOD, we have developed an experience for customers that is superior to anything that has been provided in the past”

In the case of Oman, more than 99.5% of the materials used were local, with less than 0.5% coming from Europe in the form of the D.fab additives. In Oman the cost of materials for 3D printing of the walls of the 190 m2 (2.100 SF) house was less than 1,600 Euro. According to COBOD, if a printable dry mix mortar had been used the cost of the materials would be more than 20,000 Euro, and it was such significant cost reductions which COBOD and CEMEX was aiming for with their cooperation.

Commenting on this milestone for the widespread adoption of the 3D construction printing method, Henrik Lund-Nielsen, Founder & General Manager of COBOD International stated: While we have been happy to help various cement and concrete manufacturers develop dry mix 3D printable mortars, we have also insisted on that a solution for making real concrete made from local available materials would be needed for mass application of our technology. We are more than pleased that CEMEX took on the challenge, and proud that we in cooperation could develop the new solution, which GUtech has now applied to the first building in Oman. With the low cost for the printed materials, on top of the savings from not needing formwork and the minimal crew needed to operate our printers, our disruptive technology is now more competitive than ever before in Oman and everywhere in the world”.

For further information, please contact:

Philip Knudsen, Head of Global Marketing & Communication – cell: +45 3076 3076 or e-mail:

Dr. Yousuf Al Bulushi, Assistant Deputy Rector for Innovation and Educational Services, GUtech e-mail: 

About COBOD:

COBOD International A/S, Denmark is a construction robotics and automation company with +70 employees; we are
World Leader in 3D construction printers and technology. It is our mission to disrupt the construction industry on a global scale by lowering the cost of construction via robotics and automation. We made Europe’s first 3D printed building in 2017 and since then our printers have been used to create Europe’s first two- and three-story buildings in Belgium and Germany, the first villa in Dubai and the first 3D printed buildings in Africa. Together with GE Renewable Energy, US we also 3D printed the first concrete windmill towers. Our printers are active on 6 continents and serve customers in Asia, The Middle East, Africa, Europe, The US & Canada, and South America. Our customers include multinational companies like GE Renewable Energy, PERI, Dar Al Arkan, Saudi Arabia, L&T Construction, India and JGC, Japan. For more information visit 

About GUtech; German University of Technology in Oman (GUtech)

Is the result of a Collaborative Agreement between RWTH Aachen University and OES Company (Oman Educational Services) which was signed in December 2006. The main goal behind GUtech is to become a leading university in the region, achieving internationally recognized standards in education, research, and innovation. GUtech mission is to provide a diverse student body with the education required to become highly qualified and socially responsible graduates, guided by German excellence in science and technology and with a firm grounding in Oman’s culture and heritage. The University fosters creative and critical thinking to advance research and innovation and, through this, aims at serving society as a whole.

For more information visit 


CEMEX (NYSE: CX) is a global construction materials company that is building a better future through sustainable products and solutions. CEMEX is committed to achieving carbon neutrality through relentless innovation and industry-leading research and development. CEMEX is at the forefront of the circular economy in the construction value chain and is pioneering ways to increase the use of waste and residues as alternative raw materials and fuels in its operations with the use of new technologies. CEMEX offers cement, ready-mix concrete, aggregates, and urbanization solutions in growing markets around the world, powered by a multinational workforce focused on providing a superior customer experience, enabled by digital technologies. For more information, please visit:

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Posted December 20, 2021