3D printing technology originated in the United States at the end of the 19th century, and was realized and developed in the 1980s. At first because of its expensive price, the technical immaturity and so on, did not get the promotion popularization. But after more than 30 years, of development, 3D printing technology is also gradually mature, and the price is also greatly reduced.
3D concrete printing is a type of 3D printing and is an emerging manufacturing technology. Compared to traditional manufacturing techniques, its most striking feature is its close integration with digital models, making it a technology with real potential for "what you think is what you get". It combines 3D printing technology with technology in the field of commercial concrete and produces a new application technology. Its main principle is to produce 3D information by 3D modelling and segmentation of concrete components using a computer, and then to print the prepared concrete mix by extruding it through an extrusion device, which is mechanically controlled by nozzles according to a set program, and finally to obtain concrete components. 3D printed concrete technology is a new type of mould-less concrete forming technology due to its high plasticity and lack of support during the forming process, which has two advantages: the advantages of self-compacting concrete without the need to vibrate and the advantages of shotcrete for the manufacture of complex components. In the field of engineering and construction, companies and researchers alike want to apply this new technology to traditional construction and offer new solutions for the development and sustainability of the construction industry. The construction of residential buildings is the most common, with a market share of 73.74% in 2017, followed by commercial buildings with a market share of 21.49%.
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Analysis of the 3D Concrete Printing Market and its Growth Prospects
3D concrete printing has grown over the years and the market is gradually expanding. According to the Wohlers Report 2020, the global additive manufacturing (AM) industry generated $11.867 billion (approximately RMB 84.2 billion) in revenue from products and services in 2019, an increase of 21.2% from 2018. The growth rate has slowed down compared to 2018. 3D Concrete Printings companies are mainly from Europe, United States, China; the industry
concentrate rate is relatively high. The top three companies are Winsun Global, XtreeE, D-Shape Enterprises, with the revenue market share of 12.76%, 7.80%, and 7.60% in 2017.
Europe, the largest market in the sector, has a very clear technological advantage, with a market share of 44.98%, or almost half, in 2017. North America comes second and is the larger market, with technological and talent advantages, multi-faceted supply channels and a mature industry chain. China, the third largest market, has seen further downstream demand as the economy and technology continue to advance. According to the data published by CCID, in 2019, China\'s 3D concrete printing application service industry structure, the industrial sector application service industry scale is 2.923 billion yuan, accounting for 64%; the consumer sector application service industry scale is 1.644 billion yuan, accounting for 36%. Secondly, Japan also occupies a certain market share due to its technical advantages and high product standards, coupled with strong downstream demand.
SWOT Analysis of 3D Concrete Printing Technology
According to our research, the global 3D Concrete Printings markets has a total sales value of 2.59 Million USD back in 2013, and increased to 19.21 Million USD in 2018. We made a series of functional calculation and deduced the past 5 year’s data with scientific model. Finally, we made the prediction that the value of 3D Concrete Printings markets can be 50.29 Million USD by 2023.The CAGR of 3D Concrete Printings is 21.23% from 2018 to 2023.
In the age of mechanical industrialisation, it is inevitable that information technology will replace manual labour, and 3D concrete printing is the liberation of hands in the construction sector. At the same time, in today\'s society where environmental issues are gradually attracting attention, the pursuit of sustainable and environmentally friendly industries has also become the primary goal of development, and the dust pollution caused by annual construction cannot be underestimated, while 3D concrete printing technology has the significant advantages of low dust, low noise and low pollution, which can be a good solution to this problem. It is also an environmental revolution.
Although only one or two hundred years old, concrete has become the most heavily used construction material in contemporary society and has made a huge contribution to the development and advancement of human society. Many countries, numerous construction companies and research institutes around the world are working to develop and promote 3D printed construction technology. The most important reason is that 3D printed concrete construction technology has the advantages of fast construction, low labour costs, formwork-free construction, low waste of resources and high freedom of design. At the same time, by significantly increasing the mechanisation of the construction process, it is possible to better introduce intelligent design and control, providing a huge opportunity to improve and optimise the construction process, offering technological innovation and institutional change to the construction industry. However, the 3D printed concrete technology is still in its initial stage and there are still many challenges to be overcome. There are no unified technical specifications and industry standards, no unified and mature printing equipment, printing materials, printing processes and structural reinforcement measures (how to configure the steel) are all issues that need to be addressed before 3D printed buildings can be promoted. 3D printed construction is a complex technology that combines disciplines such as architecture, materials science, mechanics, mechanical engineering, automation and control, computer science and many more. At the same time, 3D printed construction is a safe, reliable, green and economical construction technology that offers more possibilities for our future lives and deserves more attention and research from practitioners and researchers in the construction industry. This shows that the future of the 3D concrete printing industry is bright.
What the relevant industries need to do at this stage is to grasp the good opportunity of increased downstream demand, focus on the unbalanced development between regions, the high cost of raw materials and the aggressive competition, property rights and other issues, work on technological research and development, reduce costs and pay more attention to the safety of building structures.
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