High-Strength Fiberglass Ground Reinforcement Solution
Our 22mm fiberglass anchor bolts provide reinforcement for geotechnical applications. Designed for ground support in mining, tunneling, and civil engineering projects, these corrosion-resistant fasteners are suitable for environments where traditional metal anchoring systems may degrade.
Technical Specifications
| Specification | Details |
|---|---|
| Diameter | 22mm (standard) |
| Material Composition | E-glass fiber with specialized polymer resin |
| Manufacturing Process | Pultrusion with high-temperature curing |
| Tensile Strength | 1000-1100 MPa |
| Weight | 0.7 kg/meter (approximately 75% lighter than steel of equal diameter) |
| Thread Configuration | ACME or ISO metric threads available |
| Core Options | Solid or hollow for grouting applications |
| Standard Lengths | 2m, 3m, 4m, 6m (custom lengths available) |
| Chemical Resistance | Resistant to acids, alkalis, and salt exposure |
Mining and Tunneling Applications
- Underground mine roof support with fiberglass bolting systems
- Tunneling face stabilization in soft ground conditions
- Coal mine reinforcement where non-sparking materials are preferred
- Temporary excavation support during tunnel advancement
- Long-term ground control in areas with aggressive groundwater
Civil Engineering Uses
- Soil nail wall construction for urban excavation projects
- Permanent slope stabilization for highway cutting reinforcement
- Marine structure anchoring in saltwater environments
- Foundation underpinning for existing structure reinforcement
- Retaining wall tie-backs for long-term earth retention
Performance Advantages
Comparative Analysis: 22mm Fiberglass vs. Steel Rock Bolts
| Performance Factor | 22mm Fiberglass Bolts | Steel Rock Bolts |
|---|---|---|
| Tensile Strength | 1000-1100 MPa | 600-800 MPa (typical) |
| Weight per 6m Length | 4.2 kg | 16.8 kg (typical) |
| Corrosion in Acid Mine Water | Resistant | Susceptible to corrosion |
| Electrical Conductivity | Non-conductive | Conductive |
Value Proposition
Implementing 22mm fiberglass anchor bolts in suitable projects can offer:
- Reduced handling weight compared with steel
- Lower corrosion-related maintenance in aggressive environments
- Improved load distribution with proper installation and grouting
- No risk of rust staining or galvanic corrosion
For related reinforcement products, see our FRP rebar page.
Frequently Asked Questions
Q: How do 22mm fiberglass self-drilling anchor bolts perform in fractured rock conditions?
A: Fiberglass self-drilling anchors can maintain structural integrity in fractured ground. The hollow core allows for complete grouting to help ensure load transfer through fractured zones.
Q: What accessories are compatible with your 22mm fiberglass bolts?
A: The bolting system includes bearing plates, dome nuts, flat washers, and couplers designed for fiberglass reinforcement applications.
Q: How do I specify the correct bolt length for my tunneling project?
A: For typical tunneling applications, bolt length is often selected as 1/3 to 1/2 of the tunnel width, depending on rock quality. Our technical team can provide recommendations based on your geotechnical report.
Q: Are your 22mm fiberglass bolts suitable for permanent rock slope stabilization?
A: Yes. The bolts are suitable for permanent slope stabilization projects when installed and grouted in accordance with engineering specifications.
Q: How do fiberglass bolts compare to steel in terms of shear strength in dynamic loading conditions?
A: Fiberglass bolts generally have lower shear strength than equivalent steel bolts. Their tensile properties and elasticity can provide energy absorption in dynamic loading conditions, making them suitable for some seismic areas. Engineering review is recommended.
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