Displaying items by tag: 3D printing

Malawi: Switzerland-based Holcim says that the world’s first 3D printed school has opened in Salima district’s Kalonga village after a build time of just 18 hours. The EcoPact green concrete producer says the building provides a much-needed thirteenth school in Yambe, which still needs three more. Holcim’s green construction subsidiary 14Trees estimates that its 3D printing technology can meet Malawi’s school building needs by 2031, compared to after 2090 by conventional methods. The group said that the school proves that “3D printing can play a key role in bridging our world’s education infrastructure gap” with high-quality, sustainable, affordable and fast-paced construction, at scale.

Europe, Middle East and Africa regional head Miljan Gutovic said, “I am very proud of how our colleagues at 14Trees have deployed cutting-edge 3D printing technology to solve such an essential infrastructure need. Now that we’ve proven the concept in Malawi, we look forward to scaling up this technology across the broader region, with projects already in the pipeline in Kenya and Zimbabwe.”

US: Cobod’s modular BOD2 3D construction printer is being used to build a 160m² residential house in Tempe, Arizona. The new house will be ready for its occupants by September 2021. The building has been designed by Candelaria Associates.

General manager Henrik Lund-Nielsen said, “Our 3D construction technology and printers have enjoyed immense success in Europe, Africa, The Middle East, and Asia. Obviously, due to our long-term cooperation with GE, we have some success with US customers also. Still, we are really pleased that our printers are now beginning to make a stronger inroad into the US construction market. More and more US companies realise that our technology is superior to what local suppliers can deliver. Our printers have done buildings in two US states now and more will follow in the coming months.”

Italy: Switzerland-based LafargeHolcim has announced its participation in a partnership to build the world’s first 3D-printed concrete bridge in Venice, Venice province. The company will supply cement for the project. The bridge will feature in the European Cultural Centre (ECC)’s Time Space Existence exhibition at the Venice Architecture Biennale 2021 from May 2021 to November 2021. Other partners for the project are ETH Zürich’s Block Research Group (BRG) and UK-based Zaha Hadid Architects’ Computation and Design Group.

Malawi: LafargeHolcim and UK-based development financier CDC Group have printed two buildings in Lilongwe. The partnership, called 14 Trees, built a demo building and a school over a period of two days. It used 3D printing specialist COBOD’s BOD2 3D printer. The supplier also provided training to construction workers on how to operate the equipment.

LafargeHolcim Middle East Africa regional head Miljan Gutovic said, “I am very excited about the work of our joint venture 14Trees, innovating in 3D printing technology to accelerate affordable and sustainable building, from homes to schools. This is a great example of our commitment to build for people and the planet. Starting in Malawi, we will deploy this technology across the broader region with projects already in the pipeline in Kenya and Zimbabwe.”

Germany: Denmark-based COBOD has supplied its BOD2 3D construction printer to the site of the world’s first 3D printed commercial apartment building in Wallenhausen, Bavaria. COBOD partner PERI will use the product to print a 380m² complex, consisting of five apartments across three stories.

General manager and founder of COBOD Henrik Lund-Nielsen said, “We are incredibly pleased, that we are beginning to see the fruits of the many 3D construction printers we have sold. The actual building projects have been delayed by the Coronavirus outbreak, but now they start to be revealed. This new German project is really a great milestone as the commercial nature of the building proves the competitiveness of the 3D construction printing technology for three floors buildings and apartment buildings. This, again, opens entirely new markets for our printers.”

China: Switzerland-based LafargeHolcim has announced the formation of green building solutions partnership with Southeast University (SEU) in Nanjing for research into concretes and mortars for use in 3D printing in construction. The company says that the partnership is a step towards achieving its aim of becoming a “full 3D printing solutions provider.”

Head of research and development Edelio Bermejosaid, “Our global network of academic partners is critical in helping us think outside the box. We need the brightest minds to help us lead the next frontier of building solutions.”

France: Switzerland-based LafargeHolcim and Netherlands-based Witteveen + Bos have launched the 3D Printing Hackathon, an event in which engineering, architecture, and materials science students will compete to develop a new product leveraging 3D concrete printing technology to solve major problems in construction.

LafargeHolcim will supply concrete and provide technical mentorship to contestants. The company said that, while construction accounts for 40% of global carbon dioxide (CO₂) emissions, 1.6bn people are altogether without adequate housing. “Building more with less accelerates the speed of construction and reduces a building’s footprint. Leading the way in green building solutions, LafargeHolcim is actively deploying 3D printing towards addressing these challenges.” Research and development head Edelio Bermejo added, “We need to join forces to make this ground-breaking technology a reality. Join us on this exciting adventure!”

The group is offering a prize pool of Euro15,000 and operational support for full-scale implementation of the winning 3D printing solution.

Germany: HeidelbergCement says that it has supplied concrete for the construction of an 80m² two-storey detached house in Beckum, North Rhine-Westphalia. The concrete contains i.tech 3D, a ground sulphoaluminate clinker developed by HeidelbergCement subsidiary Italcementi for use as an additive in concrete for 3D printing. Engineering & Innovation head Jennifer Scheydt said, “The development of a cement-bound material for 3D printing is a major challenge. It should be easy to pump and extrude. It must also quickly develop sufficient load-bearing capacity so that the lower layers do not give out under the load of the upper layers. At the same time, the bond between the layers must be ensured.”

The property, the first of its kind, will consist of three-shelled insulation-filled walls when completed in late 2020.

Spain: LafargeHolcim España has announced the launch of a range of mortars specially suited to use in 3D printing. EN News has reported that the range, called Tector 3D build, includes cement and natural hydraulic lime mortars. The company says that the products can sustain pressures of up to 90MPa for high-speed application. It is collaborating with construction companies to apply the products to 3D printing in large residential and energy infrastructure projects

Switzerland: LafargeHolcim has announced its participation in a project aimed at increasing the height of wind turbine towers by producing larger bases on-site using 3D concrete printing technology. LafargeHolcim will supply concrete for use with Denmark-based COBOD’s 3D printing technology, while US-based GE Renewable Energy backs the project. The method enables bases to exceed the 4.5m maximum diameter necessitated by road transportation. This increases the maximum height of turbine towers by 100% to 200m from 100m, which in turn raises power generation by 33% to 20.2GWh/yr from 15.1GWh/yr.

LafargeHolcim research and development head Edelio Bermejo said, “Concrete 3D printing is a very promising technology for us, as its incredible design flexibility expands the realm of construction possibilities. Being both a user and promoter of clean energy, we are delighted to be putting our material and design expertise to work in this ground-breaking project, enabling cost efficient construction of tall wind turbine towers and accelerating access to renewable energy”