Structural strengthening with external carbon fiber reinforcement

Technology, work stages, and advantages

Why reinforce columns with carbon fiber?

Reinforced concrete and metal columns lose their load-bearing capacity over time due to:

✔ Reinforcement corrosion

✔ Cracking

✔ Increased loads

✔ Construction design errors

External carbon fiber reinforcement restores up to 95% of the structural strength without altering the geometry or halting operations.

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Carbon fiber column reinforcement techniques

  1. Horizontal reinforcement
    • Uni- or bi-directional woven tapes/webs.
    • Winding pitch is determined by design loads.
  2. Vertical Reinforcement
    • Carbon fiber lamellas supported by rounded corners.
    • Fiber orientation aligns with the column axis.
  3. Combined Reinforcement
    • Integrates both horizontal and vertical carbon fiber layers.
    • Optimal for columns subjected to complex loading conditions.

Work stages

  1. Diagnostics
    • Analysis of destructive factors.
    • Damage mapping.
    • Load calculation.
    • Temporary column unloading (if required).
  2. Surface Preparation
    • Removing dust, rust, and deteriorated concrete.
    • Filling cracks and defective areas with repair mortars (injection for up to 5 mm, standard mortars for larger areas).
    • Rounding of corners (to mitigate local stress concentrations).
  3. Carbon Fiber Application
    • Surface priming.
    • Bonding of tapes/lamellas with epoxy adhesive, followed by rolling.
    • Multilayer reinforcement (according to the calculation scheme).
  4. Finishing treatment
    • Curing until full polymerization (min. 48 hours).
    • Decorative finishing (if specified).

❗ Operational conditions:

  • Air and column temperature must be - at least +5° C..
  • Concrete surface moisture content must - not exceed 4%..
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Advantages of the technology

✅   Does not add weight to the structure.

✅   No welding or heavy equipment required.

✅   Minimal lead times (starting from 2 days).

✅   Uninterrupted production.

✅   Durability (50+ years).

Why is it important to entrust the work to professionals?

  • Reinforcement calculations must adhere to SNiP 52-01 and SP 63.13330 standards.
  • Installation errors can reduce facility efficiency and safety by 40–50%..
  • An acceptance certificateis essential for documenting changes with construction supervision.

📞 Order carbon fiber column reinforcement with a guarantee!

  • On-site engineer inspection.
  • Reinforcement design compliant with all standards.
  • Certified materials.

Contact

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