List of common problems in carbon fiber cloth structural reinforcement engineering:

1. The quality of carbon fiber cloth and the carbon fiber glue used with it is unqualified;

2. The surface polishing treatment of the concrete structure does not meet the requirements during construction;

3. The use method of structural adhesive ratio, mixing, etc. does not meet the use specifications of structural adhesive, or the construction method of pasting carbon fiber cloth does not meet the requirements of construction specifications.

Due to these problems, the total effective bonding area of concrete is less than 95% of the total bonding area, and there are small bubbles on the surface of the carbon fiber cloth.

Solutions to common problems in carbon fiber cloth reinforcement engineering:

1. Material selection and procurement should be based on the design and specification requirements of the design institute to select materials that meet the quality requirements, and the material procurement plan should be reviewed by the technical person in charge before purchasing. And before construction, a qualified unit should be selected to conduct sampling tests on the selected materials to ensure that the quality and quality of the materials meet the design requirements.

2. The ground surface of the concrete structure is polished. The loose concrete is first cleaned up, and the construction is carried out after repairing it with repair mortar. It should be noted that during this process, the repair mortar must be dried before proceeding to the next step of construction.

3. When the construction process does not meet the specifications, a professional technical clarification is required.

Matters needing attention when sticking carbon fiber cloth reinforcement:

(1) The concrete where the carbon fiber material is pasted should be kept dry, and its surface moisture content should not be greater than 4%.

(2) After finishing the preliminary preparations for pasting the carbon fiber cloth, it must be soaked with the supporting structural glue when pasting the carbon fiber cloth. As much as possible, let the structural glue fully penetrate into the gaps between the carbon fiber monofilaments to improve the performance of the joint work between the monofilaments.

(3) The structural adhesive used in the pasting construction should be used up within the time specified in the manual when the self-mixing is completed, otherwise the reinforcement quality will also be affected.

(4) Carbon fiber is conductive fiber. Avoid contact with power source during construction to avoid electric shock accident.