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CFRP-steel-concrete combined component cathode protection device and preparation method thereof

A technology of cathodic protection and composite components, which is applied in the field of cathodic protection devices for CFRP-steel-concrete composite components and its preparation, can solve problems such as difficult application of column structures, affecting the bearing capacity and bearing capacity of column structures, and improve durability And the stability of the circuit, the effect of improving the bearing capacity and concrete ductility, and improving the utilization rate of materials

Active Publication Date: 2019-11-05
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main disadvantage of the above technology is that CFRP bars and steel bars are arranged alternately, and the electric field of the entire structure affects each other, resulting in the uneven distribution of the electric field and differences in durability, which affects the entire structure
At the same time, because the reinforced concrete structure, that is, the column structure, is a structure used to resist compression, it needs to bear the load given to it by the end, if the column structure is not designed properly, there will be bearing capacity problems, which will affect the durability of the structure
The CFRP tendon is a kind of tendon with high tensile strength but low compressive strength. It is a great waste of materials to be used in column structures, and will seriously affect the bearing capacity of column structures and other characteristics.
Therefore, the above existing cathodic protection methods are difficult to be applied to column structures, and the ductility and bearing capacity of concrete cannot be guaranteed.

Method used

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  • CFRP-steel-concrete combined component cathode protection device and preparation method thereof
  • CFRP-steel-concrete combined component cathode protection device and preparation method thereof
  • CFRP-steel-concrete combined component cathode protection device and preparation method thereof

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Effect test

Embodiment 1

[0054] figure 1 It is a side view of a cathodic protection device for a CFRP-steel concrete composite member according to an embodiment of the present invention. figure 2 It is a sectional view of a cathodic protection device for a CFRP-steel concrete composite member according to an embodiment of the present invention. see figure 1 and figure 2 , the CFRP-steel concrete composite component cathodic protection device is a cathodic protection device with a single-tube hollow cylindrical structure, which includes a CFRP tube 101 with a circular cross-sectional shape, concrete 102, a single steel pipe 103 with a circular cross-sectional shape and a power supply 104.

[0055] A single steel pipe 103 with a circular cross-sectional shape is disposed in the CFRP pipe 101 with a circular cross-sectional shape.

[0056] Concrete 102 is poured into the gap between a single steel pipe 103 with a circular cross section and a CFRP pipe 101 with a circular cross section.

[0057] A ...

Embodiment 2

[0059] image 3 It is a side view of the cathodic protection device for the CFRP-steel concrete composite member of the second embodiment of the present invention. Figure 4 It is a cross-sectional view of a cathodic protection device for a CFRP-steel-concrete composite member according to Embodiment 2 of the present invention. see image 3 and Figure 4 , the CFRP-steel-concrete composite component cathodic protection device is a cathodic protection device with a multi-tube hollow cylindrical structure, which includes a CFRP pipe 101 with a circular cross-sectional shape, concrete 102, multiple steel pipes 103 with a circular cross-sectional shape and power supply 104.

[0060] The outer walls of every adjacent two steel pipes 103 with a circular cross-section are bonded together by an adhesive material, and multiple steel pipes 103 with a circular cross-section are bonded together as a whole. Wherein, the adhesive material is an adhesive material containing conductive pa...

Embodiment 3

[0065] Figure 5 It is a side view of the cathodic protection device for CFRP-steel concrete composite member of Embodiment 3 of the present invention. Figure 6 It is a cross-sectional view of a cathodic protection device for a CFRP-steel concrete composite member in Embodiment 3 of the present invention. see Figure 5 and Figure 6 , the CFRP-steel concrete composite component cathodic protection device is a cathodic protection device with a square tube hollow cylindrical structure, which includes a CFRP pipe 101 with a circular cross-sectional shape, concrete 102, a single steel pipe 203 with a square cross-sectional shape and a power supply 104 .

[0066] A single steel pipe 203 with a square cross-sectional shape is disposed in the CFRP pipe 101 with a circular cross-sectional shape.

[0067] Concrete 102 is poured into the gap between a single steel pipe 203 with a square cross-sectional shape and a CFRP pipe 101 with a circular cross-sectional shape.

[0068] A sin...

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Abstract

The invention discloses CFRP-steel-concrete combined component cathode protection device and a preparation method thereof and relates to the technical field of reinforced concrete cathode protection.The CFRP-steel-concrete combined component cathode protection device mainly comprises a CFRP pipe, concrete, steel and a power supply; the steel is arranged in the CFRP pipe; the concrete is poured into a gap between the steel and the CFRP pipe; the steel is electrically connected with a negative electrode of the power supply; the CFRP pipe is electrically connected with a positive electrode of the power supply; and when the steel is detected to start rusting, the power supply is started to carry out cathode protection. By adopting the CFRP-steel-concrete combined component cathode protectiondevice and the preparation method thereof, an electric field of the whole structure can be uniformly distributed, and the durability of the whole structure is improved.

Description

technical field [0001] The invention relates to the technical field of cathodic protection for reinforced concrete, in particular to a cathodic protection device for a CFRP-steel concrete composite component and a preparation method thereof. Background technique [0002] Now the most common cathodic protection method is a cathodic protection device with carbon fiber reinforced composite (Carbon Fiber Reinforced Polymer / Plastic, CFRP) longitudinal bars as the anode. The current makes the CFRP longitudinal ribs connect to the positive pole of the power supply, and the steel bars connect to the negative pole of the power supply. This structure uses the cathodic protection method to protect the steel bars from corrosion, improves the utilization rate of materials, and gives full play to the corrosion resistance, low consumption rate and long service life of CFRP longitudinal bars, as well as sufficient mechanical strength and reliability. High mechanical properties, greatly imp...

Claims

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Application Information

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IPC IPC(8): C23F13/22C23F13/10
CPCC23F13/10C23F13/22C23F2201/02
Inventor 周英武郑旭彬邢锋黄振宇隋莉莉
Owner SHENZHEN UNIV