Composite carbon fiber plane grid rib

Abstract

The invention relates to the technical field of reinforcing materials of concrete structures and especially relates to a composite carbon fiber plane grid rib which is composed of following components, by mass: 20-50 parts of an epoxy resin mixture, 10-30 parts of N,N,N',N'-tetraglycidyl-m-xylylenediamine tetramethacrylate, 20-30 parts of carbon fibers, 1-4 parts of a curing agent, 1-3 parts of a promoter, 8-15 parts of a flame retarding agent, 5-9 parts of a plasticizer and 4-8 parts of a filling material. The composite carbon fiber plane grid rib has an excellent mechanical performance, is good in anti-fatigue performance, is more than 94% in strength retention ratio after ten million times of fatigue tests, can greatly improve a tensile strength, a bending strength, a flexibility and an anti-cracking performance of a concrete member, can reduce a weight of the member, is anti-corrosion, has a electromagnetic shielding performance and is suitable in the fields such as bridge plates, pavement plates, building structures and the like.

Description

technical field [0001] The invention relates to the technical field of reinforcement materials for concrete structures, in particular to a composite carbon fiber plane grid bar. Background technique [0002] In the field of construction, grid bars are commonly used reinforcing materials, widely used in civil engineering construction such as houses, bridges, roads, etc., mainly used for reinforcement of brackets, scaffolding and concrete reinforcement. Due to various reasons, cracks often occur in reinforced concrete. When the cracks spread to the steel bars, the steel bars will corrode. This phenomenon is more obvious especially in the severe cold regions of the north, in environments where a large amount of ice-melting salt is used, and in coastal areas. Corrosion and rusting of steel bars affect the durability of reinforced concrete structures, leading to premature failure of structures. [0003] Carbon fiber reinforced polymer composite materials have the advantages of ...

AI Technical Summary

Problems solved by technology

[0004] Ordinary concrete is a brittle material with poor tensile and bending properties and a large volume

Although conventional reinforced concrete has improved a lot of its defects, after the concrete cracks, the steel bars are easy to corrode and the bulk density is also large, especially in the harsh environment of marine corrosion and other reinforced concrete components, after the steel bars are corroded, the concrete components are easy to crack; and There are metal materials in reinforced concrete members, which are easy to interfere with electromagnetic signals

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