Carbon fiber structural reinforcement technology is a new type of technology that sticks carbon fiber sheet or carbon fiber sheet on the surface of the concrete structure to realize the reinforcement and retrofitting of the concrete structure. Due to the long service life of construction projects, some projects have leftover problems caused by too low design load standards. Moreover, the use environment of some projects is also relatively complicated. Most of the structural structures are exposed to the external environment for a long time and are corroded by environmental factors such as temperature, rain, and atmosphere. In the process of long-term use, concrete beams and columns will have problems such as a decrease in bearing capacity, and the safety performance will also be reduced to varying degrees.

Due to the late start of carbon fiber reinforcement in my country, the technology is not mature enough. If you want to control and improve the quality of reinforcement, you need to do it from the following aspects (taking carbon fiber sheet reinforcement as an example):

1. Choose high-quality carbon fiber materials

To improve the quality of carbon fiber reinforcement is directly related to the quality and grade of the selected carbon fiber materials. For construction units, they have rich construction experience and will select the most suitable carbon fiber materials according to the actual conditions on the construction site. For owners, there are generally clear requirements for the quality level of reinforcement materials.

In addition, even for the same level of reinforcement materials, if the brand and manufacturer are different, the selling price may be different. In any case, in order to ensure the final quality of the reinforcement construction, high-quality reinforcement materials are required.

2 Focus on the construction links

In order to ensure the quality of reinforcement construction, we must focus on the construction links. Although the construction technology of carbon fiber reinforcement is not particularly complicated, in order to ensure the smooth progress of the reinforcement project and to ensure that the construction quality can be recognized and satisfied by the owner, it is best to have experienced construction personnel responsible for the main operations.

3. Do a good job in quality acceptance

After the carbon fiber reinforcement construction, it needs to be quality checked and accepted in time. Under normal circumstances, entrusting the reinforcement project to a regular and experienced construction unit can guarantee the final reinforcement effect, but the acceptance work must not be slack.

Generally speaking, we can use the simplest hammering method to detect the quality of carbon fiber carbon sheet. By hammering every inch of carbon fiber sheet to detect whether there is a hollow drum between the carbon fiber sheet and the concrete. If a hollow drum is found, it means that the carbon fiber sheet and the concrete are useless to fully adhere to each other, and it is useless to achieve the purpose of common force. If the effective area is less than 95% of the total construction area, it means that the reinforcement project is unqualified and the project needs to be reworked.

During rework, if the area of a single hollow drum is not more than 10000 mm², it is allowed to use injection method to fill and repair; if the area of a single hollow drum is greater than or equal to 10000 mm², it should be cut and repaired, and the same amount of carbon fiber sheet should be re-attached.

Some personal homeowners may not accept the quality of reinforcement. However, in order to protect the personal rights and interests of the owner, it is best to sign a contract with the construction unit, even if it is a small project, a contract must be signed. If there is a quality problem in the reinforced position of the house, it is also convenient for the construction unit to fulfill its promise in accordance with the contract.、、

4 Strengthen the maintenance work in the later stage

Although the service life of carbon fiber materials is longer, generally more than 50 years, after the reinforcement work is completed, the reinforced building structure must be maintained. In order to prolong the service life of the building, but also to ensure the reinforcement effect, the later maintenance of the reinforced building must be in place.

Because carbon fiber materials have the advantages of high strength, good ductility, corrosion resistance and durability, wide application range, and convenient construction, they have broad prospects in building reinforcement. With the continuous advancement of science and technology, new reinforcement materials and new reinforcement technologies will certainly inject new colors into urban and rural construction and building safety.