A kind of monitoring device and monitoring method of steel corrosion rate in reinforced concrete structure

A technology of reinforced concrete and monitoring devices, applied in measuring devices, weather resistance/light resistance/corrosion resistance, instruments, etc.

Active Publication Date: 2019-06-18
江苏中云筑智慧运维研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the existing steel bar corrosion monitoring technology, the present invention provides a steel bar corrosion rate monitoring device in a reinforced concrete structure, which can realize long-term monitoring of the steel bar corrosion rate and corrosion speed under the condition of not damaging the concrete at a lower cost. Moreover, the device and method of the present invention are accurate in monitoring and do not affect the actual corrosion of the steel bars to be monitored.

Method used

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  • A kind of monitoring device and monitoring method of steel corrosion rate in reinforced concrete structure
  • A kind of monitoring device and monitoring method of steel corrosion rate in reinforced concrete structure
  • A kind of monitoring device and monitoring method of steel corrosion rate in reinforced concrete structure

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Embodiment approach

[0099] According to the second embodiment of the present invention, a method for monitoring the corrosion rate of steel bars in reinforced concrete structures is provided.

[0100] A method for monitoring steel bar corrosion rate in a reinforced concrete structure, the method may further comprise the steps:

[0101] 1) Determine the outer diameter of the stainless steel ring 1 according to the size of the concrete 6; determine the thickness of the stainless steel ring 1 and the depth of the gap 101 according to the use of the reinforced concrete structure and the surrounding environment; according to the size of the steel bar 5 to be monitored , to determine the size of the gap between the stainless steel ring 1 and the steel bar 5 to be monitored;

[0102] 2) Calculate the breaking stress of the stainless steel ring 1 according to the depth of the notch 101 on the stainless steel ring 1 in step 1) and the thickness of the stainless steel ring 1;

[0103] 3) Installation: Aft...

Embodiment 1

[0111] A monitoring device for steel bar corrosion rate in a reinforced concrete structure, the monitoring device includes a stainless steel ring piece 1, a stainless steel ring piece fixing bracket 2, and a stainless steel ring piece fixing beam 3. The stainless steel ring piece fixes the beam 3 on the stirrup 4. Both the stirrup 4 and the steel bar 5 to be monitored are located in the concrete 6 . One end of the stainless steel ring piece fixed bracket 2 is connected with the stainless steel ring piece fixed beam 3, and the other end of the stainless steel ring piece fixed bracket 2 is connected with the stainless steel ring piece 1. The stainless steel ring piece 1 is a ring structure composed of band-shaped stainless steel pieces separated at both ends. The middle of the stainless steel ring piece 1 is a hollow structure. The steel bar 5 to be monitored passes through the middle of the stainless steel ring piece 1, and there is a gap between the stainless steel ring piec...

Embodiment 2

[0115] Example 1 is repeated, except that a notch 101 is provided on the stainless steel ring 1 , the notch 101 is semicircular, and the depth of the notch 101 is 10% of the width of the stainless steel ring 1 .

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Abstract

The invention discloses a monitoring device for the corrosion rate of steel rebar in a reinforced concrete structure. The monitoring device comprises a stainless steel ring sheet, a stainless steel ring sheet fixing bracket, a stainless steel ring sheet fixing beam, a wire and a detection part, wherein the stainless steel ring sheet fixing beam is fixed on a stirrup; the stirrup and to-be-monitored steel rebar are located in concrete; one end of the stainless steel ring sheet fixing bracket is connected with the stainless steel ring sheet fixing beam; the other end of the stainless steel ring sheet fixing bracket is connected with the stainless steel ring sheet; the stainless steel ring sheet is of a circular structure formed by surrounding of a strip-shaped stainless steel sheet of which two ends are separated; the middle of the stainless steel ring sheet is of a hollow structure, the to-be-monitored steel rebar passes through the middle of the stainless steel ring sheet and a gap is formed between the stainless steel ring sheet and the to-be-monitored steel rebar; and two ends of the stainless steel ring sheet are connected with the detection part through the wire separately. According to the device and the method, long-term monitoring of the corrosion rate of the steel rebar under the condition of not damaging the concrete can be achieved at relatively low cost.

Description

technical field [0001] The invention relates to a monitoring device and a monitoring method for a steel bar corrosion rate in a reinforced concrete structure, in particular to a monitoring device and a monitoring method for a steel bar corrosion rate in a reinforced concrete structure based on the principle of conduction, and belongs to the field of health monitoring and durability monitoring of a reinforced concrete structure . Background technique [0002] Steel corrosion has a great influence on the durability and safety of concrete structures. Under the action of carbonization, chloride ion erosion and other factors, the pH value of the concrete internal medium gradually decreases, and the passivation film formed on the surface of the steel bar in the alkaline medium will gradually be destroyed and lose its protective effect, causing corrosion of the steel bar. The volume of the corrosion product is 2-4 times the volume of the corresponding corroded steel bar, so it wil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N17/00
CPCG01N17/006
Inventor 张旭辉刘博文杨才千许福吴文朋
Owner 江苏中云筑智慧运维研究院有限公司
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