A big problem of precast steel structure coating has been jointly solved! The research results of Jitai water paint “reach the international advanced level.

Liuqiongxiang, chief engineer of Shenzhen General Institute of architectural design and Research Co., Ltd., chengxudong, researcher of Wuhan University of technology, zouzhenfan, general manager of Jitai Co., Ltd., shizhengjin, chief scientist, and Dr.

and Wuhan University of Technology launched the major subject of research and application of key technologies of waterborne anticorrosive coatings for cast steel structures.

After three years of arduous research and engineering practice, the subject finally ushered in the appraisal of results.

Yufei, director of petrochemical products research office attended the appraisal meeting.

On November 5, 2018, a joint research team composed of Shenzhen architectural design and Research Institute Co., Ltd., Guangzhou Jitai Chemical Co., Ltd.

In the market, responsible and responsible enterprises are required to develop and produce water-based coatings that can meet the anti-corrosion needs of cast steel structures.

It is an inevitable trend to use water-based anticorrosive coatings instead of solvent based coatings.

In order to solve this scientific and technological problem, realize the long-term protection of steel structures, and promote the development, popularization and application of cast steel structures, it is urgent to carry out systematic anti-corrosion design for the steel structures used in cast buildings – which gives Jitai Co., Ltd., which specializes in water-based anti-corrosion coatings, an opportunity.

Such corrosion is easy to cause stress concentration, reduce steel quality and performance, and seriously affect the stability and safety of the structure.

Among them, one of the hot issues is that the anti-corrosion time of water-based anti-corrosion coatings for steel structures is too short, generally about 15 years, which is far shorter than the 50 year design service life of general steel structure buildings.

On August 18, 2018, the national steel structure conference was held in Shenzhen, where anti-seismic experts of steel structures gathered to systematically discuss the problems faced by promoting the use of steel structures.

After review and appraisal by the expert committee, it is agreed that “the developed water-based heavy-duty anti-corrosion coating structure system has good stability and strong sealing performance, with salt spray resistance of 3300 hours and aging resistance of 3500 hours, effectively improving the long-term protection performance of the water-based heavy-duty anti-corrosion coating structure system”, “The developed coating process scheme of water-based heavy-duty anti-corrosion coating has the characteristics of convenient construction, reliable quality, economy and safety, can maximize the performance of water-based heavy-duty anti-corrosion coating, meet the requirements of 30 years’ non overhaul of steel structures, and has a broad application prospect”, “this achievement has reached the international advanced level on the whole”.

Steel structure components must be overhauled 2-3 times within the normal service life of buildings, which makes many steel structure projects and real estate companies flinch.

appraised and reviewed the achievements of the project.

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Shenzhen Branch, huangyongjun, deputy general manager, chief engineer and professor level senior engineer of Shenzhen Oubo Engineering Design Consulting Co., Ltd., suiqinghai, chief engineer and professor level senior engineer of Northeast China Architectural Design and Research Institute, The appraisal expert committee composed of dingjuan, executive president, R & D director, professor level senior engineer and other industry authoritative experts of Shenzhen huizefeng construction and Environmental Engineering Technology Co., Ltd.

Lou Yu, chairman and chief engineer of China Electronics Engineering Design Institute and a national engineering survey and design master, Professor Zhang Ailin, President of Beijing Architecture University, zhoujianlong, chief engineer of East China Architectural Design and Research Institute and a national engineering survey and design master, chief expert and chief engineer of China Aviation planning and Design Institute Gejiaqi, a national engineering survey and design master, Professor chenzhonghua of South China University of technology, Liu Jian, chief engineer and professor level senior engineer of China Academy of Building Sciences Co., Ltd.

At the beginning of the results appraisal meeting, the project team first made a detailed report on the research results, and shared the actual cases of the classic steel structure anti-corrosion projects served by Jitai water-based paint, such as Yancheng high speed railway station and Sinopec Maoming crude oil commercial storage depot, which fully explained that the strong anti-corrosion performance of water-based paint and mature product support can meet the use needs of cast steel structures.

However, steel structures are prone to corrosion in air or humid environment.

Jitai water paint can meet the requirement that cast steel structures will not be overhauled for 30 years – the subject “research and application of key technologies of waterborne anti-corrosion coatings for cast steel structures” began in 2018.

From discussion to practice – cast steel structure has high industrialization, fast construction speed, short construction period and fast project capital turnover, which is one of the development trends of China’s construction industry and is of great significance to promote China’s construction industrialization.

At the same time, we will provide comprehensive protection for cast steel structures and other metal components, reduce the emission of volatile organic compounds (VOCs) and other harmful substances in the coating process, extend the anti-corrosion maintenance life of cast steel structures and other metal components, and solve the problem of difficult anti-corrosion maintenance of high-rise cast steel structures and other metal components..

Although the traditional solvent based coating can meet the anti-corrosion requirements of steel structures, it contains a large number of volatile organic compounds, which will cause harm to the surrounding environment and construction personnel in the process of use, does not meet the requirements of the national environmental protection policy, and the material composition is flammable and explosive, neither environmental protection nor safety.

The appraisal committee unanimously approved the appraisal of the scientific and technological achievements of the project and believed that “the achievements have reached the international advanced level in general”.

Practice is the only standard to test the truth — the subject “research and application of key technologies of water-based anti-corrosion coatings for cast steel structures” mainly researches and develops water-based anti-corrosion coatings products, supporting coating systems and coating processes that can realize 30-year anti-corrosion and non overhaul of cast steel structures.

The appraisal meeting of scientific and technological achievements was presided over by liufuyi, Secretary General of Shenzhen society of civil architecture.

On September 17, 2021, the scientific research project -” research and application of key technologies of water-based anticorrosive coatings for cast steel structures “, jointly carried out by Shenzhen architectural design and Research Institute Co., Ltd., Wuhan University of technology and Guangzhou Jitai chemical Co., Ltd The results appraisal meeting was held in Shenzhen.