When should concrete columns be strengthened?

1. The column spacing does not meet the specifications;

2. The strength of the column concrete is unqualified;

3. Cracks appear in the column;

4. Increase the load on the upper layer (such as placing large machinery and equipment).

Strengthening with carbon fiber sheet for concrete column

Carbon fiber sheet reinforcement is suitable for the reinforcement of concrete columns under axial compression and large eccentric compression and insufficient ductility. It is possible to improve the situation of insufficient bearing capacity and ductility of the concrete cross-section through the circumferential encircling beam, that is, the continuous continuous pasting without spacing. The carbon fiber sheet can also be pasted into a ring hoop to improve the bearing capacity of the diagonal section of the concrete column.

Carbon fiber sheet reinforcement needs to ensure that the strength of the base material is not lower than C15, and the positive tensile bonding strength is not lower than 1.5MPa, and the lap length of the carbon fiber sheet in the circumferential enclosure is not less than 50mm.

Advantages: light weight and high strength, generally do not need to be overlapped, can adapt to the paste requirements of curved shape concrete, corrosion resistance, moisture resistance, and convenient construction.