Carbon fiber reinforcement 

It is recommended to choose the carbon fiber cloth with typical specifications on the market. The specifications are as follows: the carbon fiber unit area mass is 200g/sqm, the width is 300mm or 400mm, and the mechanical properties are class II. The number of carbon fiber cloth layers is single or two layers.

The layout of carbon fiber fabric for structural strengthening

1) Wall reinforcement. The experimental study found that when the height-to-width ratio of the wall is greater than 0.5, it is appropriate to use the "X" paste method(see Figure 1), and when it is less than 0.5, the "/\" paste method should be used (see Figure 2).

2) Floor slab reinforcement, which mainly focuses on the insufficient bending strength of its support and mid-span, is reinforced with carbon fiber cloth, or reinforced and reinforced because of partial openings in the floor slab, see Figure 3

Anchor arrangement

The main function of the carbon fiber in the reinforced wall is to withstand the tensile force, and the pressure it bears is not obvious. Due to stress concentration, the corners of the carbon fiber cloth are anchored at the intersections and ends of the carbon fiber cloth, which can ensure that the carbon fiber cloth can continue to work under stress when it peels off from other parts of the wall, and it can better exert its tensile strength. The advantage of high strength. It is more reliable to anchor the carbon fiber cloth at the intersection of the carbon fiber cloth, the carbon fiber cloth and the lower end of the wall by using the carbon fiber pin through the steel plate.