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The enlightenment of Japanese architectural titanium to the development of Chinese architectural titanium

Titanium has been used in various buildings in Japan since the 1970s due to its lightweight, corrosion resistance, small thermal expansion coefficient, environmental protection and rich design properties. With the promotion of titanium in temples, temples, public buildings, harbor and fishing port revetment reconstruction and foreign opera houses, villas and other buildings, the titanium building materials market has gradually developed and prospered. On the other hand, with the development of China's economy, the continuous enhancement of national strength and the increase of national investment in public utilities, some grand theaters, such as Hangzhou Grand Theater, National Grand Theater and museums have begun to use titanium building materials as roof and exterior wall decoration. Facing the initial rise of titanium building materials industry in China, it is particularly important for China's titanium industry and enterprises to pay attention to the development of Japan's titanium building materials, pay attention to the trend of titanium building materials technology, and learn from the experience.

The reason for the development of titanium building materials in Japan

Shrines, temples with titanium can be seen as the beginning of titanium building materials in Japan. In the 1970s and 1980s, it was increasingly difficult to buy traditional roofing materials such as cypress bark and thin wooden boards used on the roofs of original shrines and temples, and the durable life of roofing materials was gradually shortened. Second, the widely used copper roof should have formed a turrette did not appear, but the signs of blackening corrosion, the material life has a tendency to shorten. Plus, what the shrines and temples have been pursuing is a permanent roof. Therefore, in such a background, light weight, corrosion resistance, long service life, material impression and shrine temple collocation without a sense of harmony, surface treatment of metal color diversity of titanium material, began to emerge as a new building materials gradually.

Historical overview

The earliest application of titanium materials in Japan can be traced back to the roof of the Hayashi Shrine built in 1973. Dongbang Titanium Co., Ltd. developed titanium coloring technology for building the roof of the Shrine. Titanium has been used in Japanese architecture for 45 years. Since then, Japan has made great progress in titanium coloring technology, surface treatment of titanium building materials and other technologies.

In order to promote the development of titanium materials, in 1983, Japan Titanium Association (JIS) established a professional construction team, responsible for the application research of Titanium materials in Japan, and organized and coordinated the cooperation between architectural design departments and construction units to develop the application of titanium materials in the field of construction. In 1987, Japan's Construction Agency promulgated the fireproof material "No. 1019 otherwise material" law, which listed titanium as non-combustible material standard, further promoting the development of titanium building materials.

According to statistics, the actual consumption of titanium building materials in Japan was 1,537 tons from 1990 to 1999, and 712 tons from 2000 to 2011 [1]. In recent years, the amount of titanium used in Japan has decreased obviously, but the construction area and the amount of titanium used in foreign countries have increased significantly. As can be seen from Figure 1, the shipment quantity of titanium building materials in Japan is also unstable in recent years, which is caused by Japan's economic downturn, poor investment in public utilities and no large-scale projects in recent years.
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