In order to solve the hazards and impacts caused by cracks in some roof beams, slabs, walls and other structures of grain and oil processing workshops and grain warehouses. Better solve the interlayer of ultra-high space, improve the bearing capacity and wind pressure resistance of the original structure. The scheme adopted for the reinforcement of carbon fiber on concrete beams, slabs, columns, walls, etc., as well as the repair and maintenance of cracks that occur, is discussed.

In recent years, the carbon fiber cloth reinforcement technology with high technical content, convenient construction and strong reliability has been widely applied to the maintenance and reinforcement of industrial and civil buildings.

Compared with traditional reinforcement methods, it has outstanding advantages such as high strength, high efficiency, convenient construction, high work efficiency and good durability. Due to the construction environment, construction conditions, construction speed, the nature of the building, the environment in which it is located, the damage caused by surrounding accidents and many other factors. Many concrete buildings have structural aging problems and some initial defects cause concrete structures to crack, poor seismic performance, insufficient bearing capacity, and many other issues that affect safety and use functions. Buildings including grain warehouses and factory buildings will inevitably have partial roofs, beams, slabs, walls, etc. need to take various measures to strengthen. Carbon fiber fabric reinforcement technology is an option.

Scope of application of carbon fiber cloth reinforcement technology

1 Repair or reinforcement of masonry structure

The shear capacity of the carbon fiber cloth reinforced brick wall is equal to the sum of the shear capacity of the unreinforced wall under the same conditions and the shear capacity of the carbon fiber cloth after the reinforcement. The cracking load (limit load) of the carbon fiber cloth reinforced wall is significantly higher than that of the unreinforced wall. The deformation capacity is also significantly improved, and the cracking displacement of the wall after reinforcement is significantly increased.

2 Compressive capacity of reinforced concrete columns

In the actual construction of concrete structures, due to improper structural design, construction errors or poor construction management, the compressive strength of concrete columns is insufficient, thereby reducing the bearing capacity of concrete columns. Pasting carbon fiber cloth on the surface of concrete members can effectively control the cracking of concrete caused by various factors, maintain the integrity of its members, and improve the compressive capacity of concrete

3 Strengthen the tensile capacity of reinforced steel and concrete protective layer

The carbon fiber reinforced composite material reinforces and repairs the concrete structure technology, and the carbon fiber cloth is pasted on the surface of the tension zone of the concrete member with a specially prepared adhesive, so that the concrete and the carbon fiber sheet are integrated, and the tensile strength of the member is improved

4 Protect the silo wall, floor and other components from the internal steel bars from external corrosion

Paste the carbon fiber cloth on the surface of the concrete member, effectively repair the cracks and pits on the concrete surface, block the acid rain and acid gas from eroding the internal reinforcement and the oxidation of the air to maintain the integrity of the reinforcement and reduce the cross-sectional area.

The use of carbon fiber cloth to reinforce and repair cracks in reinforced concrete frame structures, brick masonry, and silo walls has now become a more general, simple and convenient first choice for reinforcement