A detection system and detection method for the corrosion degree of steel bars

Abstract

The invention relates to a steel bar corrosion detection system and a detection method. The system includes an electrode system, a main processing module, and a pulse generating device; the main processing module is connected to the pulse generating device; the electrode system includes a pair of electrodes CE, a parameter The ratio electrode RE and a guard ring electrode GE; the pulse generating device sends a microampere-level pulse anode current from the counter electrode CE on the concrete surface and the reference electrode RE to the concrete system, and the pulse is generated by the guard ring electrode GE. Current constraint, the pulse current is limited to the CE projection area of ​​the counter electrode to measure the real-time actual corrosion rate of the reinforcement inside the concrete; the main processing module collects and quantifies the test data to output two-dimensional and / or three-dimensional visual representation of the corrosion degree of different positions of the reinforcement graphics. The invention uses the pulse current to polarize the steel bar, has high detection accuracy, outputs two-dimensional and / or three-dimensional graphics, and makes the corrosion result visualized.

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...

AI Technical Summary

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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