Reinforcement and repair of concrete structures with carbon fiber materials is a new type of construction method recently developed, which works together with concrete structures. Using the excellent tensile strength of carbon fiber material to achieve the purpose of enhancing the load-bearing capacity and stiffness of components.

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. This technology has many advantages such as simple and fast construction, safe and reliable, 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 the seismic repair and reinforcement of concrete structures.

Compared with bonded steel reinforcement

Carbon fiber reinforcement, as long as the design is reasonable, the cost is almost the same as the general paste steel plate method. However, the carbon fiber reinforcement method has convenient construction, high work efficiency, no wet operation, no on-site fixed facilities, and less construction site occupation. It has obvious advantages in terms of construction duration and construction conditions.

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

The carbon fiber reinforcement method has good reinforcement effect, high strength and high efficiency, wide application range, easy quality assurance, and excellent corrosion resistance and durability. After being reinforced and repaired with carbon fiber, the weight of the original structure and the size of the original components are basically not increased.

Compared with the traditional reinforced concrete section or reinforced steel concrete reinforcement

Compared with the traditional reinforced concrete section or reinforced steel reinforced concrete, carbon fiber has the characteristics of space saving, simple construction, no need for on-site fixed facilities, easy construction quality assurance, basically no increase in structural size and dead weight. Therefore, carbon fiber is favored and paid attention as an epoch-making reinforcement material.

The use of carbon fiber cloth reinforcement structure has the advantages of high strength and high efficiency. Due to the excellent physical and mechanical properties of carbon fiber materials, in the reinforcement and repair of concrete structures, the bearing capacity and ductility of concrete structures and components can be improved, and their mechanical properties can be improved to achieve the purpose of efficient reinforcement and repair. The construction is convenient, the work efficiency is high, there is no wet operation, no large construction equipment is needed, and the construction occupies less space.

Widely applicable. The carbon fiber material reinforced and repaired concrete structure can be widely applied to various structural types (such as buildings, structures, bridges, tunnels, etc.), various structural shapes (such as rectangular, circular, curved surface structures, etc.), various structural parts (such as beams, slabs, columns, joints, arches, shells, piers, etc.), and does not change the shape of the structure, which is unmatched by any current method of structural reinforcement.

It is especially important that for some large bridge piers, bridges, bridge decks and tunnels, large cylinders and shell structure projects, the use of old reinforcement methods can hardly be implemented. And this reinforcement technology can be solved smoothly, and the construction quality is easy to guarantee.