In the past four years, the research team have focused on developing a special concrete mix that is fluid enough to flow through the hoses and print nozzle, yet can harden fast enough so that the next layer is able to be printed on it. On top of ensuring a consistent print quality, the final product also has to be as strong as conventional concrete.
NTU’s Singapore Centre for 3D Printing was set up by NRF Singapore to conduct research and development on 3D printing technology, and speed up the adoption of such technology by companies. All non-landed government land sale sites in Singapore have been required to use PBUs in their construction process since 2014.
“This approach also improves the safety of the workplace, since robots are doing the construction of the bathroom unit,” said Prof Tan.
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