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Grating optical fibre possessed carbon fiber composite material and its preparation method

A reinforced concrete and grating optical fiber technology, applied in the field of building materials, can solve the problems of increasing the volume and weight of structures, large repair equipment, long-term real-time monitoring of the health status of reinforced structures, etc.

Inactive Publication Date: 2007-11-07
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantages of these reinforcement methods are: (1) increase the volume and weight of the structure, (2) the long construction period affects the use, (3) require large repair equipment and cannot repair complex structures such as curved surfaces
The use of carbon fiber composite materials to strengthen and repair reinforced concrete structures has the advantages of high strength, corrosion resistance, good shock resistance, good designability, and easy molding. It can solve the disadvantages of traditional reinforced concrete structure repair methods. However, using carbon fiber composite materials Material reinforcement and repair of reinforced concrete structures has only a single function of reinforcement and repair, and does not have the function of long-term real-time monitoring of the health status of the reinforced structure

Method used

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  • Grating optical fibre possessed carbon fiber composite material and its preparation method
  • Grating optical fibre possessed carbon fiber composite material and its preparation method
  • Grating optical fibre possessed carbon fiber composite material and its preparation method

Examples

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specific Embodiment approach 1

[0005] Specific embodiment one: this specific embodiment is described in conjunction with Fig. 1, Fig. 2 and Fig. 3, and this specific embodiment is made up of carbon fiber structural layer 1 and a plurality of Bragg grating optical fibers 2, and a plurality of Bragg grating optical fibers 2 are fixed on carbon fiber structural layer 1 and the Bragg grating optical fiber 2 is arranged in parallel with the carbon fiber bundles 1-1 in the carbon fiber structure layer 1.

specific Embodiment approach 2

[0006] Specific embodiment two: this specific embodiment is described in conjunction with Fig. 2, and the difference between this specific embodiment and specific embodiment one is that it also comprises protective tube 3, and Bragg grating optical fiber 2 is positioned at the bare optical fiber at the outside of carbon fiber structure layer 1 A protective tube 3 is sheathed and a part of the protective tube 3 is fixed in the carbon fiber structural layer 1 . When adopting this specific embodiment, the optical fiber of the Bragg grating optical fiber 2 located at the exterior of the carbon fiber structural layer 1 is protected in order to avoid damage to the bare optical fiber at the external position of the Bragg grating optical fiber 2 of the carbon fiber structural layer 1 . Other compositions and connections are the same as in the first embodiment.

specific Embodiment approach 3

[0007] Embodiment 3: This embodiment is described in conjunction with Fig. 1 and Fig. 2. The difference between this embodiment and Embodiment 1 is that the carbon fiber structure layer 1 is a mixture of carbon fiber laid cloth and modified epoxy resin. During the manufacturing process of this specific embodiment, it is necessary to ensure that the unidirectional carbon fiber non-woven fabric is soaked by the modified epoxy resin matrix, and it is also necessary to specially protect the fiber grating. Other compositions and connections are the same as in the first embodiment. Specific embodiment four: this specific embodiment is illustrated in conjunction with Fig. 1 and Fig. 2, and the difference between this specific embodiment and specific embodiment three is: the weight of carbon fiber non-weft cloth in carbon fiber structural layer 1 accounts for 10% of the weight of carbon fiber structural layer 1 50-65%. When using this specific embodiment, the tensile strength of the ...

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Abstract

The composite carbon fiber material with grating optical fibre can be used to repair reinforced concrete structure. Wherein, fixing a plurality of Prague grating optical fibre 2 on inner of carbon fiber structure layer 1 with fiber bundles parallel. The preparation method comprises steps: first, selecting the standard of optical fibre 2; wherein, the optical fiber is monomode with polypropylene protection layer on surface; second, embedding the selected optical fiber in fiber structure layer 1 before solidifying and ensuring the parallel. Matching with structural load effect numerial simulation software, it can realize the advanced solidification and real time monitor.

Description

Technical field: [0001] The invention relates to the field of building materials, in particular to a carbon fiber composite material that can be used to repair reinforced concrete structures and a manufacturing method thereof. Background technique: [0002] The traditional methods of repairing reinforced concrete structures mainly include: enlarging structure reinforcement method, outsourcing steel reinforcement method, prestressed reinforcement method, bonded steel reinforcement method, etc. The disadvantages of these reinforcement methods are: (1) increasing the volume and weight of the structure, (2) the long construction period affects the use, (3) requiring large repair equipment and unable to repair complex structures such as curved surfaces. The use of carbon fiber composite materials to strengthen and repair reinforced concrete structures has the advantages of high strength, corrosion resistance, good shock resistance, good designability, and easy molding. It can sol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B14/38C04B30/02
Inventor 谢怀勤卢少微
Owner HARBIN INST OF TECH