The new type of large pultruded T-shaped composite carbon fiber profiles are used for the reinforcement of engineering buildings
Revolutionizing Structural Reinforcement: High-Performance Pultruded Carbon Fiber T-Beams
Engineered for Seismic Retrofitting & Load-Bearing Upgrades
I. Key features of our core product and the latest technological advancements.
1.Ultralight High-Strength Structure
- Weight: 1/5 of Steel, Strength: 8-10× Higher
Uses T700S-grade PAN-based carbon fiber with 12K large-tow, combined with a high-quality specialty epoxy resin. The material has an axial tensile strength of at least 4,900 MPa and a density of 1.55 g/cm³, which helps considerably cut down the dead load.
- Near-Zero Thermal Expansion
Hybrid design with mesophase pitch-based carbon fiber (MPCF) and PAN-based fiber achieves axial CTE ≤0.1×10⁻⁶/K, eliminating thermal deformation risks .
2.Seismic Damping Performance
- Vibration Attenuation: 12-20× Improvement
Integrated cork-rubber damping interlayer with natural frequency >120 Hz, avoiding resonance with seismic waves (common range: 1-10 Hz). Tested vibration decay time is 85% shorter than metal components .
3.Corrosion Resistance & Zero Maintenance
- 50-Year Service Life Validated
Passes ISO salt spray test >5,000 hours. Resists acids, alkalis, and chloride erosion—ideal for bridge piers, port facilities, and chemical plants .
Product Details
I. Core Innovations & Industry Benchmark Performance
Ultralight Superior Strength
- Weight: 1/5 of Steel, Tensile Strength: 8-10× Higher
T700 PAN-based carbon fiber (12K tow) with modified epoxy delivers axial tensile strength ≥4,900 MPa (vs. steel’s 400-550 MPa) and density 55 g/cm³, reducing dead load by 85%. - Zero Thermal Deformation Risk: Hybrid mesophase pitch-based carbon fiber (MPCF) layup achieves axial CTE ≤0.1×10⁻⁶/K, eliminating thermal stress.
Seismic & Durability Excellence
- Vibration Decay Time Reduced by 85%: Integrated cork-rubber damping layer with natural frequency >120 Hz avoids resonance with seismic waves (1-10 Hz).
- 50-Year Maintenance-Free Service: Exceeds ISO salt spray resistance >5,000 hrs, withstands 10% acid/alkali corrosion for ports, chemical plants.
II. Industry Standards & Technical Parameters
Global Standards for Structural Carbon Fiber Reinforcement
| Standard Type | Code | Key Requirements |
|---|---|---|
| Material Performance | GB 50367-2013 | Tensile strength ≥3,400 MPa, Modulus ≥240 GPa |
| Construction Compliance | CECS146:2003 | Voids <5%, Lap length ≥20cm |
| Environmental Resistance | ISO 13003 | Max service temp ≤60°C, modified resin if RH>85% |
T-Beam vs. Traditional Solutions
| Parameter | Our T-Beam | Steel Plate | CFRP Wrap |
|---|---|---|---|
| Tensile Strength (MPa) | **≥4,900** | 400-550 | 3,000-3,500 |
| Density (g/cm³) | 1.55 | 7.85 | 1.80 |
| Installation Efficiency (m²/day) | 35-40 | 8-12 | 15-20 |
| Salt Spray Life (hours) | **>5,000** | <1,000 | 3,000-4,000 |
III. Smart Construction Protocols
Substrate Preparation
- Concrete strength ≥C15, moisture <4%, surface flatness ≤2mm/m.
- Inject epoxy into cracks >0.2mm before T-beam bonding.
Adhesive Control
- Epoxy-curing agent ratio error ≤±2%, workable time: 50 mins (25°C).
- Roller compaction ≥5 passes ensures porosity <0.8% (vs. >2% conventional).
Prestressed Tensioning
- Gradual tensioning to 60% ultimate strength, hold for 5 mins to prevent slippage.
IV. Engineering Applications & Value
- Concrete Beam Flexural Upgrade: Single T-150 beam (150×100mm) carries 500 kN load at 0.64 kg weight, slashing concrete cover thickness by 40% vs. steel.
- Historical Building Preservation: 5mm ultra-thin profile maintains aesthetics; conductivity enables real-time strain monitoring.
- Bridge Pier Reinforcement: 326 beams deployed in 2024 Hangzhou Bay project reduced total weight by 482 tons, passing simulated 8.4-magnitude seismic test.
V. Quality Assurance System
- Triple Verification:
- Fiber alignment laser scan (deviation ≤2°)
- Ultrasonic void detection (voids <10mm/㎡)
- Destructive mechanical test (3-point bending load ≥3,000N)
