There is no better solution for CFRP reinforcement and sticking steel reinforcement, only more suitable.

The selection of the reinforcement plan needs to refer to the stressed part, the magnitude of the force, the stressed member, the reinforced part, the decorative surface requirements, the clearance, etc., and comprehensively consider the choice of the program.

For your reference, Horse Construtcion enumerates the advantages and disadvantages of the two solutions: CFRP reinforcement and steel plate reinforcement

Advantages of CFRP reinforcement

High strength, high modulus of elasticity

Thin thickness and light weight

Can be any length, any cross

Corrosion resistance, no rust

The construction is simple, the material surface does not need to be roughened, and does not need to be pressurized, and it is tightly combined with the concrete surface; it is suitable for curved surfaces and structures of any shape

Good fatigue resistance, suitable for impact and vibration structural reinforcement, easy to transport (coiled material), easy to store

Various types, including cloth, board, grid, and other profiles

CFRP can be pre-stressed reinforcement construction technology

Disadvantages of pasting CFRP reinforcement

The material cost is higher, but the comprehensive price is cheaper than sticky steel

Three types of adhesive

High requirements for construction technology and strict requirements for moisture-proof materials

Poor ductility, relatively brittle

Advantages of bonded steel reinforcement:

Improve both structural bearing capacity and rigidity

Adapt to both stick and riveting, adapt to node reinforcement

Available locally

Cheap material

High ductility, suitable for impact and vibration structural reinforcement

Adapt to steel structure bonding and welding joint reinforcement

Disadvantages of bonded steel reinforcement

The surface treatment of the steel plate is strict, and the bonding surface is easy to rust and fail

The thickness of the adhesive layer is not easy to control, requiring special pressurization equipment

For the construction of complex structural shapes, the quality is not easy to guarantee

The stress concentration effect at the end of the thick steel plate is high, and it is easy to peel between the steel plate and the concrete

Heavy weight, additional stress

Anti-rust measures shall be taken for reinforcing steel plates