Steel bar corrosion degree detection system and detection method thereof

Abstract

The invention relates to a steel bar corrosion degree detection system and a detection method thereof. The steel bar corrosion degree detection system comprises an electrode system, a host processing module and a pulse generator; the host processing module is connected with the pulse generator; the electrode system comprises a counter electrode CE, a reference electrode RE and a guard ring electrode GE; the pulse generator sends a microamp pulse anode current and applies the microamp pulse anode current to a concrete system from a position between the CE and the RE on the surface of concrete, and the pulse current is restricted in the projection zone of the CE through constraining the pulse current by the GE in order to measure the instant practical corrosion rate of steel bars in the concrete; and the host processing module acquires and quantitatively processes test data to output a two-dimensional and / or three-dimensional figure for visually showing the corrosion degrees of different positions of the steel bars,. The steel bars are polarized by the pulse current, so the detection accuracy is high; and the two-dimensional and / or three-dimensional figure is output, so the corrosion result is visual.

Description

technical field [0001] The invention belongs to the technical field of steel bar corrosion degree detection, and in particular relates to a steel bar corrosion degree detection system and a detection method. Background technique [0002] Frequent bridge collapse accidents have brought huge losses to national property and people's safety. In order to avoid major accidents, it is urgent to develop early diagnosis, early prevention and early maintenance of internal damage of bridge structures in service, which can prevent problems before they happen. A new generation of testing equipment. [0003] With the rapid development of my country's economy, a large number of bridges with concrete structures such as urban viaducts and highway bridges have been built. Due to the harshness and complexity of the service environment, their bearing capacity is often reduced under the action of mechanical, corrosion and other environmental loads. The reduction of the service life may even lead...

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Problems solved by technology

Among them, detection methods based on physical principles are sensitive to corrosion, and the results obtained are often qualitative and cannot quantitatively express the corrosion degree of steel bars; while detection methods based on electrochemical principles can obtain quantitative detection results, but due to the limited External factors interfere greatly and are too sensitive. It is difficult to extract effective signals in field engineering applications, which has become an important reason for the current development of this method.

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