Bridges strengthening

CFRP fabric reinforcement method has the advantages of convenient construction, strong durability, corrosion resistance and wide application. We should actively promote its development.

The application prospect of CFRP fabric reinforcement method in China

In recent years, China's carbon fiber fabric reinforcement technology has developed rapidly. At present, CFRP fabric reinforcement is widely used in the reinforcement and reconstruction of new bridges and existing bridges. Although the existing carbon fiber reinforcement technology often can not give full play to the strength of carbon fiber materials, restricting its further application and development in the field of reinforcement. However, due to its excellent corrosion resistance and durability, easy construction, wide range of use and other advantages, its application prospect is very broad.

Advantages of carbon fiber fabric reinforcement

Compared with other reinforcement methods, carbon fiber fabric reinforcement technology has obvious advantages, mainly reflected in the following aspects:

2.1 high strength and high efficiency. Because of the high strength physical and mechanical properties of CFRP, the high strength and high modulus of CFRP can be fully utilized to improve the bearing capacity and elongation of the structure and components, improve their mechanical properties, and achieve the purpose of efficient reinforcement.

2.2 self weight is relatively small. The weight of carbon fiber is less than 1.okg per square metre after pasting. After strengthening and repairing, the weight and size of the original structure are not increased.

2.3 It is easy to construct. Carbon fiber material is used to reinforce the concrete structure. Large construction machinery is not needed in the construction site. The construction site is occupied less and there is no wet operation, so the effect is very high.

2.4 construction quality is easy to guarantee. Because CFRP is flexible, even if the strengthened structure is not very flat, it can guarantee an effective bonding rate of 95%.

2.5, the scope of application is wide. Because CFRP is a kind of soft material and can be cut arbitrarily, this reinforcement technology can be widely used in various structural types, structural properties and various parts of the structure, without changing the structural properties and not affecting the appearance of the structure.

2.6 excellent corrosion resistance and durability. Carbon fiber reinforced concrete (CFRP) has good corrosion resistance and durability because of its stable chemical properties and no reaction with acid, alkali and salt.