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High-cohesive-force carbon fiber composite bar for cement concrete member and preparation method

A cement concrete, high-adhesion technology, used in building components, structural elements, building reinforcements, etc., can solve the problems of lack of failure protection, poor adhesion between fiber composite bars and concrete, and improve the adhesion. , the effect of improving tensile properties

Pending Publication Date: 2022-08-02
江苏帝威新材料科技发展有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of this application is to provide a high-adhesion carbon fiber composite bar for cement concrete components and its preparation method to solve the existing technical problems that the fiber composite bar has poor adhesion to concrete and does not have failure protection

Method used

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  • High-cohesive-force carbon fiber composite bar for cement concrete member and preparation method
  • High-cohesive-force carbon fiber composite bar for cement concrete member and preparation method

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Embodiment approach

[0044] As an optional embodiment, it also includes the following steps:

[0045] S2.1. After spraying the adhesive, sandblast the surfaces of the auxiliary rib 10 and the main rib 20 .

[0046] Through the sandblasting operation in step S2.1, the roughness of the surface of the composite rib is further improved, and the bonding force between the composite rib and the concrete is further improved.

[0047] As an optional embodiment, the preparation raw materials of the auxiliary rib 10 and the main rib 20 include a resin matrix and impregnated fibers. The resin matrix can effectively improve the corrosion resistance of the composite bars, and the impregnated fibers can further improve the mechanical strength of the resin matrix.

[0048] As an optional embodiment, the impregnated fibers include any one or a combination of carbon fibers, glass fibers, aramid fibers and basalt fibers. The use of the above fibers can effectively improve the modulus and strength of the composite ...

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Abstract

The invention particularly relates to a high-cohesive-force carbon fiber composite bar for a cement concrete member and a preparation method, and belongs to the field of concrete members. A high-cohesive-force carbon fiber composite bar for a cement concrete member comprises an auxiliary bar and a plurality of main bars, the auxiliary bar is surrounded by the main bars in a stranded mode, and the side wall of each main bar is connected with the side wall of the auxiliary bar. A groove is formed between the side walls of every two adjacent main ribs. The auxiliary reinforcements and the main reinforcements are arranged, the main reinforcements surround the auxiliary reinforcements in a stranded mode, the axial tensile property of the composite reinforcement is effectively improved, when the main reinforcements are broken, the auxiliary reinforcements can still provide tensile force, and failure protection during breaking is achieved; a groove is further formed between the side walls of every two adjacent main reinforcements, the multiple main reinforcements are arranged to be twisted into a stranded rope shape with the auxiliary reinforcements as the axes, the grooves are made to be in a spiral shape with the auxiliary reinforcements as the axes, mechanical interlocking between the grooves and concrete is achieved, and the tension of the concrete is evenly applied to the auxiliary reinforcements and the main reinforcements through the grooves. Therefore, the bonding force between the composite bar and the concrete is effectively improved.

Description

technical field [0001] The invention belongs to the field of concrete components, and particularly relates to a high-cohesion carbon fiber composite bar for cement concrete components and a preparation method. Background technique [0002] At present, most of the reinforced concrete structures in the field of civil engineering are made of metal materials such as steel bars, which have high density and poor fatigue properties. In order to solve related problems such as steel corrosion, relevant researchers have used methods such as stainless steel, galvanizing and epoxy resin coating to solve the corrosion problem, but the effect is not good. Fiber reinforced composite bar is a high-performance composite bar made of resin matrix impregnated with continuous long fibers and prepared by pultrusion process. Due to the good corrosion resistance of resin matrix, fiber reinforced composite bar can avoid the problem of steel corrosion. [0003] However, the existing fiber reinforced...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D07B1/04D07B1/02D07B1/16E04C5/07
CPCD07B1/04D07B1/025D07B1/16E04C5/07D07B2205/3007D07B2205/3003D07B2205/205D07B2205/30
Inventor 王至昶赵鸣方聃
Owner 江苏帝威新材料科技发展有限公司
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