After a long-term use of bridges, some diseases will inevitably occur. Although the diseases will not cause much impact and harm in the early stage, with the continuous development of the diseases, it may threaten the safety of bridge traffic. In this regard, effective techniques should be adopted to reinforce the bridge in time. Among many bridge reinforcement technologies, carbon fiber reinforcement is more commonly used at present, and the effect is more significant, which solves the difficulty of bridge reinforcement.

Basic Principles of Carbon Fiber Reinforced Bridges

The basic principle of using carbon fiber to strengthen bridges is to use epoxy resin to pre-impregnate carbon fiber, making it a new composite reinforcement material. Then, epoxy resin is used to paste carbon fiber on the part to be reinforced to form a composite body of steel bar, concrete and carbon fiber. Promote the carbon fiber and the structure to be stressed together, improve the shear or crack resistance of the structure itself, so that the crack resistance, strength and stiffness of the structure itself meet the requirements. The reinforcement method of carbon fiber can be used in various structures, which can not only play the role of anti-cracking, but also achieve anti-corrosion and shock resistance.

How to use carbon fiber sheet For bridge strengthening

• Surface treatment
• Applying HM-180 primer
• Repairing and leveling with HM-180CE leveling adhesive
• Applying HM-180C3P carbon fiber adhesive
• Externally bonded Horse unidirectional carbon fiber sheet

• Applying HM-180C3P carbon fiber adhesive again
• Curing and protecting

Advantages of carbon fiber reinforcement for bridges

(1) Because carbon fiber sheet can be produced on a large scale and has good mechanical properties, it can be used not only in bridge engineering, but also in other construction projects, such as buildings, tunnels and subways.

(2) From the above analysis of the construction method, it can be seen that the tools and tools used in the construction of the carbon fiber reinforcement method are very simple and easy to carry, which can effectively and safely realize the reinforcement of the structure.

(3) The carbon fiber sheet itself is a sheet, which is very heavy, but extremely strong. After being pasted on the surface of the component, it will neither increase the weight of the component nor occupy any space, which overcomes the disadvantages of other reinforcement methods.

(4) The construction quality is easy to control, the construction process is simple and convenient, easy to operate, the construction quality is easy to control, and it can reach a high quality standard.

(5) It can be seen from practice that the carbon fiber sheet itself has strong durability. After pasting it on the surface of the component, it can also improve the overall durability of the carbon fiber sheet and the component. Whether it is sun exposure or wind and rain erosion, the performance of the carbon fiber sheet will not be significantly weakened.

(6) At present, the price of carbon fiber sheet is relatively high, but it has obvious advantages in other aspects. At the same time, the reinforcement process requires less manpower, so overall, its cost still has certain advantages. It is mainly manifested in the following aspects: the amount of carbon fiber sheet is not large, and the volume and quality of the components will not increase after reinforcement; the sheet has a certain flexibility and can be used on the surface of many types of components; the construction is convenient, and the cycle is relatively shorter.