A groundbreaking 3D printing technique developed by NTU researchers promises to revolutionize construction by reducing carbon emissions and enhancing concrete strength.
Scientists at Nanyang Technological University (NTU), Singapore, have unveiled an innovative 3D concrete printing method that captures and stores carbon dioxide (CO2), marking a significant step toward sustainability in the construction industry. The breakthrough was detailed in the journal Carbon Capture Science & Technology.
The new method involves injecting CO2 and steam, captured as by-products from industrial processes, into the concrete mix during printing. This process not only reduces carbon emissions but also strengthens the resulting material. Tests revealed that the modified concrete exhibited improved mechanical properties, making it stronger than conventionally 3D-printed concrete.
Cement production, a major contributor to CO2 emissions at around 1.6 billion metric tonnes annually, accounts for nearly 8% of global CO2 emissions. By utilizing less material, shortening construction time, and reducing labour requirements, NTU’s approach addresses the environmental impact of cement usage. This development underscores the potential of 3D printing in paving the way for greener construction practices.
The research team hopes this technology will encourage adoption across the construction sector, aiding in global efforts to mitigate climate change.
Source: NTU
