Recently, the 863 project "Research on the Development and Application of Stainless Steel Rebar for Marine Building Structures (2015AA03A502)", led by China ZYJZ Metallurgical Research Institute Co., Ltd., passed the technical acceptance.
Stainless steel rebar is the most corrosion-resistant type of rebar. It is mainly targeted at permanent defense facilities such as marine defense projects such as remote islands and reefs and cross-sea bridges where the corrosion conditions are severe. It solves the structural life and corrosion of ordinary steel bars caused by chloride ion corrosion in concrete structures. Reduced security and other issues.
Focusing on the demand for stainless steel rebars in the construction strategy of a national marine power, the subject developed a series of high-strength economical duplex stainless steel rebars suitable for different marine environments, mastered large-scale and stable production and key application technologies, and solved steel bars in marine environments. The key application technical problems of service performance and component durability evaluation are to improve the service life of the structure and the safety of the building, and to achieve the demonstration application of high-performance stainless steel rebar in the remote islands and reefs. Established China's stainless steel rebar products, evaluation and application technology standard system, and built a life cycle monitoring system for demonstration projects, which has contributed to breaking through the technical bottleneck of key materials for China's marine resource development and ensuring the smooth implementation of the national marine strategy.