Japan: Competition Intense, Enterprises Actively Develop New Concrete Technology

< P align = center > New Concrete Developed by Taisei Construction Co., Ltd.

< P > < FONT face = Verdana > The quality and technology of concrete in the construction of buildings are the most important issues at present, and also the most concerned issues of all construction units. On September 2, Japan Taisei Construction released a new type of concrete column material, which is lightweight and has three times the strength of ordinary concrete columns. Shimizu Construction has developed a building material with strong fire resistance and crack resistance. The company uses materials from Kashima, Japan, and the life of concrete products made by the company is predicted to reach 10,000 years; Dalin Group uses waste materials to make concrete, which can reduce carbon dioxide emissions by 80%. Companies use technical strength to attract customers, and the competition is fierce.

< P > < FONT face = Verdana > "Our goal is not only to make new materials practical, but also to attract the attention of more people in the industry." Koji Muramatsu, a spokesman for Dacheng Construction Materials Department, said. The concrete columns produced by the company can withstand the strength requirements of high-rise buildings with more than 50 stories. While the strength is improved, the thickness and weight of the columns are reduced by half compared with ordinary columns. It is worth mentioning that the cost of this kind of concrete columns is similar to that of ordinary columns. Therefore, large-scale construction projects in Tokyo have decided to use this material.

< P > < FONT face = Verdana > The improvement of crack resistance and fire resistance is the goal of Shimizu Construction Company. In the process of construction, the shrinkage of concrete will cause cracks in the building, which will affect the appearance and cause water seepage. Therefore, Shimizu uses limestone with anti-shrinkage function as raw material to prevent cracks. In addition, special fibers are used to make up for the weakness of poor fire resistance of limestone and improve the fire resistance of concrete when used.

< P > < FONT face = Verdana > The Dalin Group is mainly engaged in the development and research of materials for environmental protection. Steel manufacturing process will produce a lot of waste, the company uses waste to develop new production technology, compared with the usual cement and sand production, every cubic meter of concrete produced, 50 kilograms of waste can be used to reduce carbon dioxide emissions by 80%.

< P > < FONT face = Verdana > Infrastructure investment in Japan is declining, and companies are increasingly competing for sales. In order to obtain better performance, it is inevitable that the competition of concrete performance and production technology is becoming more and more fierce.

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