What is the biggest difference between 3D printing house technology and traditional building technology?

Dongfang News: What is the biggest difference between 3D printing house technology and traditional building technology?

　　Ma: The biggest difference in technology is that it greatly reduces the damage to the environment caused by traditional building methods.

　　The 3D printed house will not generate new construction waste after the on-site assembly after the factory's digital printing is completed. At the same time, the technology can make complex hollow sections of buildings. Compared with traditional field pouring, it saves a lot of scaffold mould materials and manpower, greatly shortens the construction period, and there is no dust pollution on the site.

Traditional buildings destroy the environment, but new technologies can save the environment and turn urban construction waste into urban mines. The digested waste concrete is processed and returned to the building, and the industrial garbage and packaged fast-food boxes can also be returned to the building as insulation materials after treatment.

　　As a result of fully mechanized operation, 3D printing house technology also improves the construction quality while reducing the cost.

　　Dongfang News: What is the core technology of 3D printing?

　　Ma: Ink and printing equipment are at the heart of the new technology. Ink material is a new type of stone made of sand, improved cement and glass fiber.

　　Our core technology is to ensure that ink does not collapse in the process of stacking. In other words, when the nozzle spit out the second layer of ink, the first layer of ink must be semi-solidified, neither flow, and the second layer of adhesive. This has put forward strict requirements for printing technology, ink solidification time and machine printing time must be consistent. Otherwise, the ink may solidify before it is printed, even freezing the whole machine. During the test phase, countless machines were scrapped.

　　Dongfang News: How is the safety performance of the house produced by the new technology guaranteed?

　　Ma: Safety is the most important consideration at the beginning of research and development. Our technology has a digital monitoring process from the introduction of raw materials to the production of materials to the printing process. Like a house made of cars and airplanes, it is far more elaborate than the traditional buildings of today.

　　The strength of the material was accurately measured, and in terms of safety technology we studied with academician professor of Chinese academy of sciences. From raw materials to printing "ink" material standards are higher than the modern traditional way of building materials. The manufacturing process is completed by mechanized numerical control, which avoids the problem of building quality affected by human factors in traditional construction methods. Technology and technology have ensured the quality and life of buildings.

　　Dongfang News: What is the biggest problem with this technology in mass reproduction?

　　Ma: The core problem is "ink", which means our materials need to adapt to different geographical climate in different areas. According to the local environmental characteristics and climate change, make some adjustments. These can be solved by the formulation and equipment process developed now.

　　Shanghai is warm in spring, hot in summer, cool in autumn and cold in winter. Moderate rainfall throughout the year, seasonal distribution more even. Generally speaking, it is mild and moist with distinct seasons. We have adjusted the materials for printing houses in winter and summer, and these problems have been taken into account and solved in the present experiment.