Displaying items by tag: 3D printing

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”