Research progress and development direction of drability assessment methods for CFRP reinforced concrete structural members

Abstract The construction industry is an important part of China’s national economic development, in recent years with the economic development is to increase the investment in infrastructure. As time goes on, there be the phenomenon of building use function degradation, in addition, in many reinforced concrete structure, and part of the building is in a bad environment conditions, caused by a lack of concrete durability, reduce safety performance and the structure performance degradation, causing a large number of buildings can not reach the expected service life or the desired function. With the rapid development of reinforcement technology, the theoretical basis and practical engineering experience of concrete reinforcement technology in China have been gradually accumulated and improved, and a lot of achievements have been made. Based on the theoretical research and engineering practice of concrete structure reinforcement, the state and local governments have promulgated a series of codes and standards for the reinforcement and renovation of existing buildings, which provide a good technical guarantee for the reinforcement and renovation of concrete structures. Concrete structural members reinforced by adhesive still need to be affected by external environment in the use process, such as chemical corrosion environment, chlorine corrosion environment, freeze-thaw environment damage and long-term load. Therefore, the test and evaluation of the durability of the members of the load-bearing structure reinforced by adhesive plays an important role in the reinforcement of concrete structure system and the service process after the reinforcement of members. How to evaluate the durability of reinforced concrete structures is of great significance to the durability monitoring of reinforced concrete structures.