As the people pay more and more attention to the safety and stability of building structures, they not only pay attention to the safety and stability of newly-built construction projects, but also pay more attention to the safety and stability of existing buildings. Renewal of structural reinforcement technology is also constantly innovating, the most common of which is unidirectional carbon fiber reinforcement technology, which is more efficient, faster and better than traditional reinforcement and maintenance methods.

1 Principles and advantages analysis of carbon fiber reinforcement technology

Carbon fiber reinforcement technology refers to a new type of technology that uses fiber-type composite materials to stick to the surface of the concrete structure to repair and strengthen the concrete surface. Carbon fiber reinforcement and repair technology has the following characteristics and advantages compared with traditional concrete reinforcement and repair technology.

The first is its excellent physical and mechanical properties. The repair and reinforcement of the concrete structure can not only effectively improve its mechanical properties, but also improve the self-carrying capacity of the entire concrete building and the safety and stability of the structure. It can also effectively increase the ductility of concrete components, greatly improve the overall performance of the building, and play a positive role in the maintenance and reinforcement of buildings.

The second is that the construction of carbon fiber reinforcement technology is more convenient, and the related mechanical equipment required is relatively small. In the process of construction, maintenance and reinforcement, the occupied space is small and the construction speed is fast, which greatly improves the construction efficiency and construction quality.

In addition, the use of carbon fiber technology for reinforcement and maintenance of construction projects can greatly increase the service life of buildings. This is because carbon fiber materials have extremely high acid and alkali resistance.

Finally, the construction of carbon fiber reinforcement technology is very convenient, and its materials are relatively thin and occupy a small area. The existing shape of the building will not be greatly changed, and the quality of the construction project can be effectively guaranteed, while the beauty of the building itself can be ensured, and the application is very convenient.

2 Application of carbon fiber reinforcement technology in the reinforcement and maintenance of construction projects

Because of its great advantages, carbon fiber reinforcement technology is widely used in the maintenance and reinforcement of buildings. It has an important effect on improving the quality and safety and stability of buildings. The specific applications are as follows:

2.1 Application range of carbon fiber reinforcement technology

Carbon fiber reinforcement technology can be applied to various parts of the construction project, and then repair and strengthen it to ensure the quality and safety and stability of the construction project. First of all, carbon fiber reinforcement technology can be applied to the joint of two concrete structures of a building to ensure the quality and safety and stability of the joint, such as the joint of bridge and pier. Secondly, it can also be applied to important parts of building concrete structures to ensure its quality, such as concrete beams, concrete columns, concrete slabs, etc., so as to improve their shear strength and seismic performance. Finally, it can also be used in some brick masonry structures to improve its stability and quality.

The reinforcement and maintenance of carbon fiber materials for construction projects is mainly to strengthen its bending resistance, that is, carbon fiber materials and reinforced concrete share the load, thereby improving the bearing capacity of the building. The second is the shear reinforcement of construction projects, that is, the use of carbon fiber materials to constrain the concrete, thereby reducing the occurrence of cracks in the concrete under the action of shear to achieve the effect of improving the shear strength. There is also the compressive reinforcement of the building, that is, the use of the characteristics of the carbon fiber material itself to restrain the radial deformation of the building concrete, thereby improving the compressive strength of the concrete.

2.2 Application of carbon fiber sheet

In the process of construction projects, there is also a more commonly used carbon fiber material, namely carbon fiber board. Carbon fiber sheets are usually used on the outer surface of buildings to improve the durability of buildings. The chemical stability and physical stability of carbon fiber board itself are relatively good, it has excellent heat resistance and corrosion resistance, and its thermal insulation performance is very ideal, not easy to burn, it is very good as a building exterior wall material ideal. At the same time, the carbon fiber board has beautiful appearance and light structure, and no secondary decoration is required. This is also an important reason why it is widely used in building exterior walls. In addition, the carbon fiber board can also be used in the maintenance and reinforcement of the reinforced concrete structure of existing buildings. It can greatly improve the durability of reinforced concrete buildings, extend the service life of the building, and improve the safety of the building. .

Summary

Carbon fiber materials are the development trend of reinforcement and maintenance of construction projects, and their application prospects are very broad. Only by continuously conducting in-depth research and analysis on it, exploring its more use functions, continuously promoting the rapid development of my country's construction engineering cause, and providing sufficient power and fresh blood for my country's modernization.