Sustainable 3D Concrete Printing Technology Development

This technical report details the development of a novel 3D concrete printing method by researchers at Nanyang Technological University (NTU) in Singapore, which captures and stores carbon dioxide (CO₂). The method aims to address the significant environmental challenges posed by traditional cement production, which is responsible for approximately 8% of global CO₂ emissions. The innovative approach integrates carbon capture technology with 3D printing, enhancing the mechanical properties of concrete while reducing its carbon footprint. The process involves injecting captured CO₂ and steam into the concrete mix, resulting in a solid mineralization of CO₂ and improved structural performance. Laboratory tests indicate a 50% increase in printability and notable enhancements in compressive and bending strength. The method also absorbs 38% more CO₂ compared to conventional techniques, presenting a dual benefit of sustainability and strength. The research aligns with global initiatives for sustainable development and highlights NTU's commitment to advancing eco-friendly construction technologies.