A Review of 3D Printing Technology (2023-08)¶

The construction industry has traditionally been slow, labour-intensive, and faced challenges in sustainability. However, recent advancements in 3D concrete printing (3DCP) offer promising solutions for faster, more precise, and sustainable construction practices. This critical review examines the developments and advances in 3D printing of concrete, as well as the challenges and future potential of this technology in sustainable construction. Our study highlights the advantages of 3D printing technology, such as reducing costs, materials, and time, enhancing safety, and minimizing environmental pollution. Moreover, 3D printing enables the creation of complex and intricate designs that were previously challenging to achieve through traditional methods. To address sustainability concerns, we explore eco-friendly alternatives like high-volume fly ash, geopolymers, and recycled glass aggregates that can be utilized in 3D printing. These materials not only reduce environmental impact but also enhance the long-term strength performance of building components. While discussing the different 3D printing methods, including extrusion and powder-based techniques, we emphasize the potential applications of each method in sustainable construction. In conclusion, 3D printing technology has the potential to transform the construction industry by offering low-cost, efficient, and environmentally responsible solutions. However, challenges like job implications and structural stability must be addressed through further research.