1. When the structure is reinforced, the primer, leveling adhesive and structural glue are not used according to the normal construction procedures.

Need to follow the material use and construction operation procedures and standardize the operator's construction skills;

2. Improper sanding and cleaning of concrete surface.

The stucco layer should be sanded off on the concrete surface to expose solid concrete, and the surface dust should be blown away and wiped clean with acetone;

3. The concrete surface is humid or the humidity in the air is high,

Need to abide by relevant regulations to avoid construction in high humidity and harsh climate conditions;

For ventilation and treatment, doors and windows should be opened for ventilation before construction to minimize humidity and temperature difference;

Avoid simultaneous large-area wet operation near construction components;

4. The concrete is in the curing period and the humidity is high.

Can postpone the construction time or dry and treat the reinforced base surface;

5. The performance of the carbon fiber adhesive used for bonding is not up to standard, causing peeling damage.