Topological Optimization and Concrete 3D Printing: A Winning Duo in Construction?

Something interesting is brewing at the University of Michigan! A team of researchers and architects have been studying concrete 3D printing in order to develop a construction process that is more efficient than traditional solutions. They claim to have designed an ultra-light, waste-free concrete that would reduce the weight of a structure by 72% compared to “conventional” concrete. By combining this concrete with topological optimization software, they could therefore create structures that are less energy, material, time and weight intensive.

As you know, the construction industry is increasingly taking advantage of the benefits of additive manufacturing, and more and more construction sites are being equipped with 3D concrete printers to reduce costs, labor and material consumption. Beware, however, because we are still far from seeing these machines become commonplace on building sites – even if some 3D printed homes are starting to appear. That being said, 3D printing seems to be making its headway in the sector, even if, according to the University of Michigan team, there is still much progress to be made.

Photo Credits: DART laboratory

The work is led by Mania Aghaei Meibodi, an architect and assistant professor of architecture at Taubman College of Architecture and Urban Planning – one of 19 schools at the University of Michigan and researchers Alireza Bayramvand and Yuxin Lin. They explain, “Previous approaches around 3D concrete printing, or 3DCP, aim to digitize construction and reduce concrete consumption. However, the most widely used approach has geometric limitations that restrict its application to simple shapes like orthogonal walls. This leads to high concrete consumption and limits its application for lightweight forms that entail intricate shapes like branching and angular tubular forms, overhangs, layer cantilevers, and filament section or angle variations.”