Product Introduction

The mechanical properties, corrosion resistance, and temperature resistance of basalt fiber composite reinforcement are all superior to those of glass fiber reinforcement.

Production process: The production process flow of basalt fiber reinforcement mainly includes the following core steps:

1. Raw material preparation and melting: Natural basalt rock is crushed and cleaned, then put into a pool kiln and melted at a temperature of 1450℃ - 1500℃ to form a uniform magma-like melt.

2. Drawing and forming: The melt flows out through a platinum-rhodium alloy sieve plate and is pulled by a high-speed drawing machine. It solidifies rapidly in the cooling process to form continuous basalt fibers (with a diameter usually ranging from 13 to 24 micrometers), and is immediately sprayed with an impregnating agent to protect the fibers and enhance their bonding strength with the resin.

3. Impregnation and bundling: Multiple strands of fibers are passed through a resin tank to fully impregnate base materials such as epoxy resin and vinyl resin.

4. Pulling and curing: The impregnated fiber bundles pass through a forming mold with a heating system under the traction of a pulling machine, and undergo high-temperature curing to form specific diameter threaded surface reinforcement materials with a screw-like surface.

5. Cutting and winding: The cured continuous reinforcement materials are cut to the required length according to the requirements, or wound and packaged by a pulling machine.

Advantages Of Basalt Fiber Reinforcement

1. Alkali resistance: The residual water in concrete is highly alkaline. Basalt fiber reinforcement, being inherently more resistant to alkali, performs better in the long-term collaborative work with concrete, providing better durability and effectively solving the problem of steel corrosion.

2. Comprehensive weather resistance: In complex corrosive environments such as acids, alkalis, and salts, the stability and service life of basalt fiber reinforcement are superior to those of glass fiber reinforcement.

3. High-temperature performance：In extreme conditions such as high temperatures or fires, both will deteriorate, but the high-temperature resistance of basalt fiber reinforcement is higher.

4. Stronger heat resistance: Basalt fiber is formed by drawing volcanic rock that has melted. Its heat resistance is superior to that of glass fiber. Multiple studies have shown that after the same high-temperature treatment, the retention rate of tensile strength and shear strength of basalt fiber reinforcement is higher.

Application Scenario

For buildings with higher fire resistance requirements, basalt fiber reinforcement is a more reliable choice. 

Cost And Cost-Effectiveness

The low price is the most notable advantage of glass fiber reinforcement. The production volume of glass fiber reinforcement is larger and its market share is greater, which makes the cost of its raw materials cheaper. In terms of cost, the price of glass fiber is lower than that of basalt fiber reinforcement. 

How to choose between glass fiber reinforcement and basalt fiber reinforcement: In conventional engineering projects where the requirements for corrosion resistance and high-temperature performance are not extremely strict, glass fiber reinforcement is a relatively cost-effective option. However, in harsh environments, choosing the more superior basalt fiber reinforcement can lead to a longer maintenance period and longer service life, and in the long run, it may be more economical. 

Interface Bonding Performance

The bonding performance of both reinforcement materials with concrete is good, but the mechanisms are slightly different:

Chemical bonding: Studies have shown that basalt fibers, due to their higher iron oxide content, have better bonding performance with certain resins than glass fibers, which helps to enhance the integrity of the composite material.

Mechanical interlocking: Both surfaces will form threads through winding or embossing to ensure the mechanical interlocking force with concrete.

Electrical insulation: Both are excellent electrical insulators and are completely non-conductive. 

Magnetic-free Advantage

In facilities that require protection against electromagnetic interference (such as hospitals, precision instrument workshops) as well as in projects like subways and electrified railways, it has an irreplaceable advantage compared to traditional steel bars.

Performance Comparison Table