Carbon fiber reinforced polymer about bridge reinforcement

The increase in vehicle load puts considerable pressure on the carrying capacity of existing bridges. Therefore, the improvement and enhancement of maintenance and research of bridge structures and engineering applications have attracted global attention in other areas. And carbon fiber reinforced polymer is born because of it. The application specificity of carbon fiber reinforced polymer reinforcement technology in bridge structure, excellent strength and rigidity, and excellent corrosion resistance.

Carbon fiber reinforced polymer material

Continuous carbon fiber material with high strength carbon fiber, unidirectional reinforced composite material with high elastic modulus, arranged in bundles, cured epoxy resin and its carbon fiber reinforced resin cured impregnated carbon fiber cloth, carbon fiber sheet. A specially formulated resin sheet is impregnated with resin paste or pasted into a reinforced concrete bridge deck, and the curing of the resin forms an original composition of complex new forces that work together. The tensile strength of the carbon fiber sheet exceeds 3400 MPa.

Carbon fiber reinforced polymer reinforcement 

The technology of concrete bridges has been widely used in Europe, the United States, Canada and Japan. My country's practice in this area began in the mid-1990s, and the application of carbon fiber reinforced polymer reinforcement in the promotion and application of new technologies for highway concrete bridges in China was discussed. Carbon fiber reinforced polymer reinforced concrete bridge is a new type of reinforcement method. The reinforcement method has become a fast highway bridge. Highway bridge reinforcement is as much as possible in normal operation. Carbon fiber sheet, insisting that there is no heavy equipment, easy construction, easy to dry bridge high-altitude operations, can be widely used in highway bridges. The application of the old cement concrete highway bridge reinforcement method in the project has a good effect and is a comprehensive method. At present, the reinforcement method of carbon fiber reinforced polymer is often related to crack grouting.

Appication of carbon fiber reinforced polymer about bridge reinforcement

Engineering practice has proved that the use of carbon fiber reinforced composite materials (CFRP) to reinforce bridge engineering is convenient and effective. Compared with other reinforcement projects, the carbon fiber reinforced polymer reinforcement plan saved more than 3 million yuan. The construction period is short, and the impact of construction machinery and equipment on traffic is small.