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Steel reinforcement corrosion sensor and preparation method and its detection method for reinforcement corrosion

A steel corrosion and sensor technology, applied in the field of sensors, can solve problems such as inability to accurately judge the corrosion state of steel bars, and achieve the effect of simple structure and low cost

Inactive Publication Date: 2008-07-09
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] But so far, most of the methods are indirect testing methods, which have many defects.
According to the test results obtained by the current method, the corrosion state of the steel bar cannot be accurately judged

Method used

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  • Steel reinforcement corrosion sensor and preparation method and its detection method for reinforcement corrosion
  • Steel reinforcement corrosion sensor and preparation method and its detection method for reinforcement corrosion
  • Steel reinforcement corrosion sensor and preparation method and its detection method for reinforcement corrosion

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Embodiment Construction

[0032] Referring to Figures 1 to 3, the steel bar corrosion sensor of the present invention is provided with a base body 3 and lead wires 4 (4 lead wires 41 to 44 are established in total), the cross section of the base body is circular, and the base body 3 is a spiral layer in the vertical direction. shape distribution. The thickness of each layer of the base body 3 is 2 mm, the distance between layers is 2 mm, the vertical length of the base body is 20-50 mm, and the number of layers of the base body is 4-10. The outer diameter of the cross-section can be adjusted according to the diameter of the steel bar section. The outer diameter of the general engineering steel bar is mostly in the range of 16-40mm. Therefore, when selecting the steel bar material, it is better to take the outer diameter of the sensor substrate as consistent as possible with the diameter of the steel bar in the component. , the inner diameter is 2mm smaller than the outer diameter. A wire lead-out hole...

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Abstract

The invention provides a steel bar corrosion sensor with simple structure and lower cost, a preparation method thereof, and a steel bar corrosion detection method capable of accurately and nondestructively detecting the distance between a hazardous frontal surface and the steel bar in specific corrosion environment on the premise of not damaging concrete surface. The steel bar corrosion sensor comprises a base body and an extraction wire, wherein the base body has a spiral layered distribution in the vertical direction and is provided with longitudinal openings. The preparation method comprises removing screw thread of a steel bar, and cutting to obtain the base body; drilling holes at different heights on the base body; and connecting the extraction wire with the holes and sealing to obtain the steel bar corrosion sensor. The detection method comprises the following steps of: respectively arranging the sensors at different sections of a concrete component, periodically collecting data of the steel bar corrosion sensors at the different positions by a low-resistance tester within the service period of the concrete component, periodically measuring and recording, and determining the corrosion state of the steel bar to be detected to obtain the environmental corrosion condition of concrete.

Description

technical field [0001] The invention relates to a sensor, in particular to a steel bar corrosion sensor, a preparation method and a detection method for steel bar corrosion. Background technique [0002] Corrosion of steel bars in reinforced concrete is one of the main factors affecting the durability of structures. The countermeasures often taken in practical engineering are: adopt a set of effective monitoring methods, predict the corrosion environment in concrete early, predict the time when corrosion factors reach the location of steel bars, and take corresponding measures to carry out targeted measures before the corrosion of steel bars begins. Take precautions. Compared with the method of reprocessing after the steel bar is corroded, this countermeasure will achieve twice the result with half the effort. Compared with the anti-corrosion treatment after the steel bar starts to corrode, the economic consumption is small and the anti-corrosion effect is better. [0003]...

Claims

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Application Information

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IPC IPC(8): G01N17/04G01N27/00
Inventor 石建光吴旭
Owner XIAMEN UNIV
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