It’s unsurprising that TU Eindhoven have come up with a relevant solution to 3D concrete printing. The university has undertaken a concrete printing project of their own, in conjunction with the Royal BAM group, printing out a bicycle bridges in the Netherlands with their own personal construction-grade printer. This was the same printer that Suiker used validate his equations using the Finite Element Method.
https://www.tue.nl/en/university/news-and-press/news/14-02-2018-suikers-equations-prevent-3d-printed-walls-from-collapsing-or-falling-over/