GFRP Combination Bolts
Overview
Normet’s next-generation GFRP (Glass Fiber Reinforced Polymer) Rockbolts provide an alternative to steel products for applications where steel is unsuitable. Their composite composition offers unique properties such as exceptional tensile strength, lightweight design, cuttability, corrosion resistance, and long-term durability. Normet’s GFRP Combination Bolt is an innovative solution consisting of a fully threaded GFRP bar enclosed in a corrugated HDPE pipe with an expansion shell. It is designed for the installation of immediate support while allowing for post-grouting, making it suitable for both temporary and permanent applications.
Innovative GFRP bolts designed for immediate support and efficient post-grouting performance.
Key specification
- Hybrid design for mechanical and chemical anchorage
- Lightweight and easy to install
- Ideal for temporary tunnel support with cuttable performance
Key benefits
GFRP Combination Bolts
- Exceptionally high tensile strength compared to steel counterparts.
- Lightweight (4 times lighter than steel)
- Corrosion resistant and durable, making it suitable for permanent applications
- Cuttable and crushable, reducing concerns on damage to hauling elements, making it ideal for temporary applications
- Immediate support system that allows for post grouting capability.
- Can be installed with typical rock reinforcement equipment.
Typical applications
- Permanent reinforcement for metro/roadway tunnels
- Permanent support for oil/gas storage caverns with highly corrosive environments
- Permanent support for subsea tunnels
- Temporary reinforcement of underground applications
- Immediate support system
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