GFRP bolts (Glass Fiber Reinforced Plastic bolts) are an innovative alternative to traditional underground steel support products. These bolts are increasingly used in tunnel construction due to their advanced production technologies and the speed with which they support excavation developments.

Glass Fiber Reinforced Polymer (GFRP) rebar is a modern alternative to conventional steel rebar. Unlike traditional carbon steel rebar, GFRP rebar is composed of high-strength glass fibers embedded in a durable polymer resin matrix. This unique material offers several significant advantages over steel, including corrosion resistance, a high strength-to-weight ratio, electromagnetic neutrality, and non-conductivity.

Temporary GFRP ground anchors are particularly beneficial in underground applications. These anchors are 25% lighter than conventional steel strand anchors, while providing twice the strength. This makes them an efficient option for ground support systems. They can be installed using the same construction techniques as steel anchors, ensuring compatibility without the need for specialized equipment or procedures. The GFRP anchors maintain similar diameters and strand quantities to their steel counterparts, making them a versatile solution for a wide range of projects.

These GFRP ground anchors can support safe working loads of up to 150 kilonewtons and are resistant to both acidic and alkali soil conditions, ensuring reliability in challenging underground environments.

Another key benefit of temporary GFRP ground anchors is their easy removal. These anchors can be quickly cut and removed using piling, excavation, and tunnel boring machines without the risk of damage to the surrounding infrastructure or project delays. This feature greatly benefits developers and contractors, ensuring streamlined construction processes and minimizing the risk of setbacks.