The carbon fiber strip and prestressed CFRP plate are all carbon fiber strip in the final analysis. The difference between the two is from the different reinforcement methods they belong to.

The reinforcement methods of carbon fiber cloth and carbon fiber strip are all passive reinforcement, and the prestressed CFRP plate is the active reinforcement.

Passive reinforcement and active reinforcement are relative. The conventional reinforcement method belongs to the category of passive force, that is, only when the load of the original member increases, it will play a reinforcing role. Active reinforcement is like prestressed reinforcement in prestressed concrete system, which can exert force on the original component and change the working state of the original structure to achieve the purpose of reinforcement.

The active reinforcement has many advantages compared with the traditional passive reinforcement method. For example, the carbon fiber strip is required to be unloaded as much as possible before construction, and there is no requirement in the prestressed CFRP plate. This is because there are two effects on the reinforcement of the structure. The two force, in short, is that the structure has been forced before the reinforcement, and the force that is subjected to the passive reinforcement is the two force.

The passive reinforcement effect could produce obvious effect two times of stress, such as unloading is not obvious or not unloading structure of passive reinforcement may not reach the ideal effect; the strengthened beam tensile strength enough, failure mode from carbon fiber pull into the compression zone of concrete crushing, the this is the two time for the consequences of force.

As one of the active reinforcement methods, the prestress CFRP plate has a prominent advantage that it can effectively improve the utilization of the material.

We all know that the tensile strength of carbon fiber plate is far higher than the tensile strength of concrete and steel, therefore, the strength of carbon fibers play a large deformation and yield of steel or concrete damage, the strength of the carbon fiber has not fully played out, and the prestressed CFRP plate can also advance the carbon fiber plate strength, greatly improved the utilization rate, effectively increase the structural strength and stiffness at the same time can reduce the deflection of the structure deformation, and can reduce and closed cracks.