Production and application of glass fibre reinforcing bars in China

As a new type of composite reinforcement, the production and application of glass fibre reinforcing bars in China have shown a positive development. The following is a detailed explanation of its production and application in China:

First, the production situation

1. Raw material and process:
   

• Glass fibre reinforcing bars to chlorite, quartz sand, limestone, dolomite, boron calcium stone, boromagnesite six kinds of ores as raw materials, high-temperature melting, drawing, winding, weaving and other manufacturing processes.
  

• The production process is mainly divided into ‘crucible method’ and ‘kiln method’. Crucible method as a traditional process, high energy consumption, poor product quality, the current production accounted for a small proportion. On the other hand, the pool kiln method, with high efficiency, large output, stable quality and low energy consumption, is the mainstream process at present.
  

2. Production capacity and output:
   

• China has become a major producer of glass fibre. In recent years, the domestic production of glass fibre has continued to grow.
  

• The main barriers to the glass fibre industry are reflected in various aspects such as policy, capital and technology, with high entry thresholds and concentrated market supply.
  

3. Producers:
   

• There are a number of glass fibre reinforcing bars producers in China, such as Anhui Kangda Jinye FRP Technology Co., Ltd, Henan Kotoda FRP Composite Material Co.
  

Second, the application

1. Application fields:
   

• Fiberglass reinforcing bars are widely used in highways, bridges, airports, wharves, stations, water conservancy projects, underground projects and other fields because of their high strength, corrosion resistance, easy jacking, non-magnetic, easy to install and construct and other characteristics.
  

• In civil engineering, glass fibre reinforcing bars can be used to replace traditional steel bars and improve the durability of concrete structures.
  

• In traffic engineering, such as underground, foundation pit and other construction, glass fiber reinforcing bars can reduce labour intensity, improve construction efficiency and reduce project costs.
  

2. Application Example:
   

• A national highway first-class highway renovation project used high-strength glass fibre reinforcing bar for continuous reinforced concrete pavement construction, which is the first time in the country that high-strength glass fibre reinforcing bar is used for this kind of pavement construction.
  

• Fiberglass reinforcing bars were also used to replace steel reinforcement in the wharf project and shore protection project in the port area, which improved the durability of the project structure.
  

• In the concrete structure of metro platforms, the application of glass fibre reinforcing bars not only meets the requirements of load bearing capacity, but also speeds up the construction speed and safety due to its property that can be cut by the shield machine.
  

3. Market Prospect:
   

• With the continuous promotion of infrastructure construction and the accelerated development of new urbanisation in China, the market demand for glass fibre reinforcing bars will continue to grow.
  

• Meanwhile, with the continuous progress of technology and cost reduction, the application scope of glass fibre reinforcing bars will be further expanded.
  

In summary, the production and application of glass fibre reinforcing bars in China have shown good development. In the future, with the continuous progress of technology and the continuous expansion of the market, glass fibre reinforcing bars will be applied and promoted in more fields.