Case analysis: The specific situation is as shown above. The house has been renovated. The floor slab is too thin and the middle beam is too small when living. Now the floor is reinforced according to customer requirements.

According to the conventional method, there are two kinds of reinforcement schemes: 1. After the rebar is replanted, the beam section is enlarged, and then the floor is reinforced with steel. 2. Adopt the lightest carbon fiber sheet for sticking and strengthening.

After more exchanges with customers, consultations were conducted afterwards, and the carbon fiber sheet was used for reinforcement, which was less destructive and economical.

Horse Construction carbon fiber fabric and structural adhesive

Construction step:

1. Floor slab cleaning: The original roof slab has been scraped to increase the difficulty of the project, but our company personnel overcome the difficulties and remove the surface material on the joint surface until the concrete structure is exposed.

Experience sharing:

1. No dust or oil on the surface. We generally sand the entire area with a grinder.

2. If the floor is wet, bake it with fire. If it is a roof, the leak must be rewatered.

3. There are spalling, loose, honeycomb and other inferior concrete, repair and level with repairing materials.

2, floor scoring: According to the construction drawing, identify the location and scope of the reinforcement, and then use the ink fountain to eject the carbon fiber location line of the location to be reinforced.

Experience sharing: According to the actual situation, it is better to use more materials and ensure the quality. For example: 300mm wide carbon cloth, the edge-to-edge spacing is 300mm, and there is only a distance of 400mm at the end, then only leave a distance of 100mm, leaving 300mm enough to stick the carbon cloth

3, sticky carbon fiber wrap

Experience sharing: Immediately spread the pre-cut carbon fiber cloth on the bottom impregnation glue after painting the bottom impregnation glue. Use a special rubber scraper or rubber round to roll or scrape in the direction of the carbon fiber cloth. Care should be taken not to roll back and forth. It should be rolled in one direction to eliminate air bubbles and excess glue. It is firmly bonded to the concrete surface, and the carbon fiber wire must not be damaged during rolling and scraping. When the surface of the carbon fiber cloth is dry to the touch, the next layer can be pasted.

4. Inspection and Acceptance The following picture is a detailed picture, a reminder, it is very important: after the construction is completed, brush again and add sand to facilitate the user to scrape the glue.

Experience sharing: This is a detailed picture, which is very important: after the construction is completed, brush the glue and sand again to facilitate the user to scrape the glue.