Research progress on low carbon characters of 3D concrete printing based construction
3D concrete printing(3DCP)is an emerging and highly automated building technology that holds great potential in promoting evolution of low-carbon constructions industry.In this study,advantages and challenges of 3D concrete printing in terms of low-carbon construction are systematically elaborated.Compared to traditional construction techniques,the benefits of 3DCP with respect to labor-saving and formwork-free cause revolutions in labor structure and building process,which can largely mitigate carbon emissions and wastes from traditional on-site construction.Moreover,the high flexibility of 3DCP technique in construction to complex structures provides possibilities for achieving new types of low-carbon structural designs.Innovative designs like topological structural optimization,energy integration and rebuildable design can contribute to material saving,energy conservation and resources recycling.Low carbon material design has been one of the critical issues for low carbon 3DCP.From this aspect,the utilization of solid wastes,lightweight concrete,geopolymer concrete and fiber-reinforced concrete for 3D printing can provide effective solutions.Based on the collaborative development of technique optimization,structural design and material research,3DCP technology will definitely promote the transformation of traditional construction industry towards automation and green low carbon in the future.
concretedigital construction3D printinglow carbon character
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