Flexural reinforcement of concrete slabs

Project overview

Office building, 22 storey decoration found cracks in the floor part of the cast in place support. The negative reinforcement of cast-in-place plate support is trampled in construction, and the protection layer of negative reinforcement is too large, so it is necessary to carry out bending reinforcement.

Because the floor is not long span, the load is small, the amount of negative reinforcement that needs to be replenished per meter is small, and the calculation of I grade reinforcement is about 400mm2. Therefor carbon fiber fabric for flexural strengthening of the concrete slabs.

The advantages of carbon fiber fabric structural strengthening  

1. Compared with steel plate bonded, it saves about 30-40% cost.

2. Shorst constriction period

3. No special anticorrosion is needed after reinforcement

4. Basically do not increase the thickness of the floor

5. Do not affect the construction of decorative surface

6. Restricted crack development