⭐ FRP Carbon Fiber Strengthening Systems
FRP (Fiber Reinforced Polymer) carbon fiber fabric systems are one of the most advanced, high-strength strengthening technologies used to enhance the structural performance of reinforced concrete buildings. Due to its superior tensile strength, lightweight nature, and ease of application, it provides effective structural improvement for columns, beams, slabs, and shear walls.
Carbon fiber fabrics are produced in various types, including unidirectional and bidirectional, with densities such as 300 g/m² or 600 g/m², and fiber tow counts like 12K, 24K, or 50K. The specific type of fabric to be used is determined based on static calculations and engineering modeling of the element to be strengthened.
⭐ Areas of Application
FRP carbon fabric strengthening is widely applied to the following structural elements:
* Increasing axial load and shear strength in reinforced concrete columns
* Enhancing flexural and shear strength in beams
* Providing stiffness to shear walls
* Strengthening damaged structural elements
* Improving seismic performance
The application can be executed in single, double, or multiple layers according to engineering calculations.
⭐ Pre-Application Preparation Phases for FRP
FRP strengthening is a sensitive application that requires precise surface preparation. At Yaşam Architecture, we execute all system steps as follows:
🔹 1) Removal of plaster and weak surfaces
The entire plaster layer on the column or beam is completely stripped using mechanical methods.
🔹 2) Reinforcement inspection and corrosion cleaning
If there is rusted reinforcement beneath the concrete cover:
* Corrosion is cleaned using wire brushing, scraping, and sandblasting methods.
* Reinforcement supplementation is performed where necessary.
🔹 3) Primer application and repair mortar
Epoxy primer is applied to the surface. Voids and segregations are filled with structural repair mortar (e.g., Monotop style repair systems).
🔹 4) Corner rounding (Beveling)
To ensure proper wrapping of the carbon fabric and prevent fiber breakage, column or beam corners are mechanically beveled and rounded to a minimum radius of R=20–25 mm. This process is the most critical stage for the quality of FRP strengthening.
⭐ Application Phases of Carbon Fiber Fabric
🔹 1) Epoxy adhesive application
Epoxy resin with a special formulation is applied to the load-bearing surface.
🔹 2) Wrapping the fabric on the surface
Carbon fiber fabric is applied to the surface according to the engineering project as:
* Overlapped (with bonding margins),
* Vertical and horizontal wrapping patterns,
* Single or multi-layered.
🔹 3) Top coat resin application
After the fabric is wrapped, the surface is completely saturated with epoxy to ensure total adhesion of the fibers.
🔹 4) Silica sand broadcasting
Silica sand is broadcasted onto the surface before the epoxy dries. This process ensures better adhesion for the subsequent plaster or coating layer.
⭐ Post-Application Final Layer
After the epoxy and FRP layers have cured:
* Protective screed,
* Plastering layer,
* Gypsum, paint, or decorative coatings can be applied as surface finishes.
This ensures both structural strengthening and aesthetic harmony with the existing building texture.
⭐ Advantages of FRP Strengthening
* Exceptionally high tensile strength
* Rapid strengthening of columns and beams
* Lightweight material → adds no extra load to the structure
* High elasticity and flexibility
* Corrosion-resistant
* Easy to apply in confined spaces
* Completed in a much shorter time compared to traditional reinforced concrete jacketing
⭐ Conclusion
FRP carbon fiber fabric systems are among the fastest, lightest, and highest-strength solutions in modern structural strengthening. As Yaşam Architecture, we professionally perform all FRP applications with our expert teams in accordance with engineering calculations.