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Accelerated corrosion method and device for FRP reinforced damaged RC component in simulated marine environment

A marine environment, accelerated corrosion technology, used in measuring devices, weather resistance/light resistance/corrosion resistance, instruments, etc., can solve the problems of slow FRP-concrete interface performance, long time required for steel corrosion, and a lot of manpower and material resources. To achieve the effect of controllable steel corrosion degree, reduce test limit and save time

Pending Publication Date: 2020-05-22
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a method and device for accelerated corrosion of FRP reinforced damaged RC components in a simulated marine environment, and to solve the problem of the long time required for steel corrosion in natural exposure environments and the impact on the FRP-concrete interface The performance is slow, the durability research requires a lot of manpower and material resources, and the cost is high. On the premise of ensuring that the purpose of the test is achieved, time is saved and costs are reduced.

Method used

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  • Accelerated corrosion method and device for FRP reinforced damaged RC component in simulated marine environment
  • Accelerated corrosion method and device for FRP reinforced damaged RC component in simulated marine environment
  • Accelerated corrosion method and device for FRP reinforced damaged RC component in simulated marine environment

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Embodiment 1

[0047] This embodiment is an embodiment of an accelerated corrosion method for simulating FRP reinforced damaged RC components in a marine environment, and includes the following steps, such as figure 1 Shown:

[0048] S10. Making RC components, the steel bars of the RC components are connected with wires;

[0049] S20. The RC component in step S10 is at least partially immersed in the electrolyte solution, the wire is connected to the positive electrode of the power supply, and the negative electrode of the power supply is connected to the cathode in the electrolyte solution, and the electrochemical corrosion of the steel bar is artificially accelerated to obtain a damaged RC component with cracks. In the embodiment, the power supply uses a DC stabilized power supply with a maximum output voltage of 450V and a maximum output current of 2A, and the outer wall of the power supply of this embodiment is provided with a voltage regulation switch and a current regulation switch to facil...

Embodiment 2

[0077] This embodiment is an embodiment of an accelerated corrosion device for FRP reinforcement of damaged RC components in a marine environment. It includes a corrosion tank containing an electrolyte solution, an RC component at least partially placed in the electrolyte solution, a cathode placed in the electrolyte solution, and a power source RC components are obtained by pouring steel bars and concrete. The steel bars are electrically connected to the positive pole of the power source, and the cathode is electrically connected to the negative pole of the power source.

[0078] Such as image 3 As shown, the RC components placed in the electrolyte solution are in multiple groups, and the multiple groups of steel bars are electrically connected to the conductive bars, and the conductive bars are electrically connected to the positive pole of the power supply. Multiple groups of RC components are corroded at the same time, which can improve the corrosion efficiency; and the arra...

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Abstract

The invention relates to the technical field of reinforced concrete structures. More specifically, the present invention relates to a method for manufacturing, the invention relates to an acceleratedcorrosion method and device for FRP reinforced damaged RC components in a simulated marine environment. The method comprises manufacturing an RC component, manually accelerating electrochemical corrosion of the reinforcing steel bars in an electrolyte solution to obtain a damaged RC component with cracks, using crack pouring glue for pouring glue and repairing cracks, using bonding glue for FRP wet bonding method reinforcement to obtain the FRP reinforced damaged RC component, soaking the FRP reinforced damaged RC component in a constant-temperature salt solution for secondary accelerated corrosion, obtaining a test lap joint component, and researching and testing the FRP-concrete interface durability of the lap joint member. The sodium chloride solution is adopted to simulate the marine environment, the steel bars in the RC component are electrified in the sodium chloride solution to accelerate corrosion of the steel bars, the corrosion degree of the steel bars is controllable, and operability is high; and the FRP reinforced RC component is soaked in the sodium chloride solution for artificial secondary accelerated corrosion, so that the time can be saved and the cost can be reduced on the premise of ensuring that the test purpose is achieved.

Description

Technical field [0001] The present invention relates to the technical field of reinforced concrete structures, and more specifically, to an accelerated corrosion method and device for FRP reinforcement of damaged RC components in a simulated marine environment. Background technique [0002] In coastal areas, in-service bridges and dock platforms have to withstand the influence of chloride salt corrosion and dry-wet cycles, causing their reinforced concrete (RC) components to appear steel corrosion, concrete cracking and protective layer peeling, resulting in a certain degree of safety in the structure Hidden dangers. The corrosion of steel bars caused by chloride ion intrusion into concrete is the most important and most dangerous reason for the destruction of reinforced concrete buildings in the marine environment. In many seaport structures, more than 80% of the RC bending members have suffered severe steel corrosion, which has affected the normal and safe operation of the str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/02
CPCG01N17/02
Inventor 谢建和李江林刘迪李邦正周俏汕林德宁
Owner GUANGDONG UNIV OF TECH
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