Glued steel fiber for tunnel ZT65/35 CH

Glued Steel Fiber for Tunnel (ZT65/35CH) is a high-strength reinforcement material designed for tunnel shotcrete, underground excavation support, and structural concrete reinforcement. It consists of hooked-end steel fibers bundled with water-soluble glue, ensuring excellent dispersion in concrete mixing while preventing fiber balling.

After mixing, the glue dissolves completely, allowing individual fibers to distribute uniformly throughout the concrete matrix. This improves crack control, toughness, and energy absorption in tunnel linings and underground structures.

Glued hooked-end steel fiber is a type of steel fiber reinforcement used to replace or reduce traditional rebar mesh in tunnel construction. It provides three-dimensional reinforcement, improving the structural performance of shotcrete in demanding underground environments.

Key structural advantages include:

Improved tensile and flexural strength

Enhanced ductility and impact resistance

Reduced crack propagation

Better energy absorption under ground stress

Faster and safer tunnel construction

Key Features of Glued Steel Fiber for Tunnel

Excellent Anti-Cracking Performance

The fiber network forms a 3D reinforcement system that effectively controls:

Plastic shrinkage cracks

Structural cracks under load

Fatigue and vibration damage

Superior Tunnel Shotcrete Performance

Widely used in underground construction because it provides:

High energy absorption

Strong rock deformation resistance

Improved lining stability

Reduced rebound rate during spraying

Controlled Dispersion (Anti-Balling Technology)

The glued bundle design ensures:

Easy mixing with concrete

Uniform fiber distribution

No fiber clumping

Stable workability during pumping and spraying

Strong Mechanical Anchorage

Hooked ends significantly improve:

Pull-out resistance

Load transfer efficiency

Structural toughness

Advantages in Tunnel Engineering Applications

1. Improved Tunnel Safety

Glued steel fibers enhance the ductility of shotcrete, allowing the lining to absorb ground pressure deformation without sudden failure.

2. Faster Construction Speed

Eliminates or reduces the need for:

Steel mesh installation

Complex rebar binding

Manual reinforcement positioning

This significantly improves tunneling efficiency.

3. Lower Construction Cost

Reduced labor cost

Lower material waste

Faster cycle time

Less equipment dependency

4. Better Shotcrete Quality

Reduced rebound loss

Denser concrete structure

Improved surface integrity

Higher long-term durability

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