It is generally believed that the carbon fiber reinforcement design is reasonable, and the cost of steel reinforcement is almost the same. However, the carbon fiber reinforcement method is convenient in construction, high in work efficiency, no wet operation, no need for on-site fixed facilities, less construction site occupation, and has obvious advantages in terms of construction period and conditions. The carbon fiber reinforcement method has good reinforcement effect, high strength and high efficiency, wide application area, easy quality assurance, excellent corrosion resistance and durability. After carbon fiber reinforcement and repair, the original structure's own weight and the original component's size are basically not increased.

Carbon fiber reinforcement has many advantages such as light weight, high strength, corrosion resistance, aging resistance, good durability, and stable physical properties. Its tensile strength is 7-10 times that of steel with the same cross section. The use of carbon fiber reinforced materials to repair and reinforce concrete structures is a new method developed recently. It works together with concrete structures to make use of the excellent tensile strength of carbon fiber materials to enhance the bearing capacity and stiffness of components. This technology has many advantages such as simple and quick construction, safety and reliability, good durability, can adapt to various complex structural shapes, and does not affect the appearance of the original structure. It has been widely used in seismic repair and reinforcement of concrete structures.

Compared with the traditional reinforced concrete cross-section or reinforced steel concrete reinforcement, carbon fiber has the characteristics of saving space, simple construction, no need for on-site fixed facilities, easy construction quality assurance, and basically no increase in structure size and weight. Therefore, as an epoch-making reinforcement material, carbon fiber has attracted much attention and attention. Carbon fiber cloth reinforced structure has the advantages of high strength and high efficiency. Due to the excellent physical and mechanical properties of carbon fiber materials, the bearing capacity and ductility of concrete structures and components can be improved during the reinforcement and repair of concrete structures, and their mechanical properties are improved to achieve the purpose of efficient reinforcement and repair. Convenient construction, high work efficiency, non-wet operation, no need for large-scale construction equipment, and less construction site occupation.

Wide application. Carbon fiber reinforced concrete structures can be widely applied to various types of structures (such as buildings, structures, bridges, tunnels, etc.). Reinforcement and repair of various structural shapes (such as rectangular, circular, curved structures, etc.). Reinforcement and repair of various structural parts (such as beams, plates, columns, nodes, arches, shells, pier, etc.). It does not change the shape of the structure, which is unmatched by any current method of structural reinforcement.

It is particularly important that for some large bridge piers, bridges, bridge slabs, and tunnels, large tube and shell structure engineering, it is almost impossible to implement the old reinforcement methods. The reinforcement technology can be used to solve the problem smoothly, and the construction quality is easy to guarantee.

Because the carbon fiber material is flexible, even if the surface of the reinforced structure is not very flat, it can basically reach an effective paste rate of 100%. However, it is difficult to achieve a 100% effective bonding surface for the pasted steel plate, and the corresponding acceptance standard only requires that it reach 70%.

The carbon fiber material is light and thin. The weight per square meter is less than 1.0kg after the paste, and the thickness of the first layer is only about 1.0mm. After the reinforcement and repair, the original structure's own weight and the original component size are basically not increased.

So, more and more contractors use carbon fiber for reinforcement.